cabbagebark: andira inermis
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

cabeza de angel: calliandra anomala
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

cajeput: melaleuca leucadendron
Rated relatively safe when taken in appropriate quantities for short periods of time.

california bay: umbellularia californica
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

california poppy: eschscholzia californica
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

camphor: cinnamomum camphora
Rated relatively safe when taken in appropriate quantities for short periods of time.

canaigre: rumex hymenosepalus
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

cananga: cananga odorata
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

candlenut: aleurites moluccana
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

carrot: daucus carota
Rated relatively safe when taken in appropriate quantities for short periods of time.

cascara sagrada: rhamnus purshianus
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

cascarilla: croton eleuteria
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

cassava: manihot esculenta
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

cassie: acacia farnesiana
Generally regarded as safe when taken in appropriate quantities for short periods of time.

castor: ricinus communis
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

cat powder: actinidia polygama
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

catnip: nepeta cataria
Generally regarded as safe when taken in appropriate quantities for short periods of time.

celandine: chelidonium majus
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

celery: apium graveolens
Rated relatively safe when taken in appropriate quantities for short periods of time.

cherry-laurel: prunus laurocerasus
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

chickweed: stellaria media
Rated relatively safe when taken in appropriate quantities for short periods of time.

chili: capsicum annuum
Rated relatively safe when taken in appropriate quantities for short periods of time.

chinaberry: melia azedarach
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

chinese rhubarb: rheum officinale
Rated relatively safe when taken in appropriate quantities for short periods of time.

christmas rose: helleborus niger
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

christthorn: ziziphus spina-christi
Rated relatively safe when taken in appropriate quantities for short periods of time.

cinnamon: cinnamomum verum
Rated relatively safe when taken in appropriate quantities for short periods of time.

clary sage: salvia sclarea
Rated relatively safe when taken in appropriate quantities for short periods of time.

climbing onion: bowiea volubilis
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

clove: syzygium aromaticum
Rated relatively safe when taken in appropriate quantities for short periods of time.

coca: erythroxylum coca
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities fo extended periods of time.

cocoa: theobroma cacao
Rated relatively safe when taken in appropriate quantities for short periods of time.

coffee: coffea arabica
Rated relatively safe when taken in appropriate quantities for short periods of time.

colocynth: citrullus colocynthis
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

coltsfoot: tussilago farfara
Rated relatively safe when taken in appropriate quantities for short periods of time.

columbine: aquilegia vulgaris
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

comfrey: symphytum peregrinum
Rated relatively safe when taken in appropriate quantities for short periods of time.

common milkweed: asclepias syriaca
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

condurango: marsdenia reichenbachii
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

coral bean: erythrina fusca
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

corkwood: duboisia myoporoides
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

corncockle: agrostemma githago
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

cranesbill: geranium maculatum
Rated relatively safe when taken in appropriate quantities for short periods of time.

creosotebush: larrea tridentata
Rated relatively safe when taken in appropriate quantities for short periods of time.

culebra: methystichodendron amesia
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

dagga: leonotis leonurus
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

damiana: turnera diffusa
Rated relatively safe when taken in appropriate quantities for short periods of time.

dandelion: taraxacum officinale
Generally regarded as safe when taken in appropriate quantities for short periods of time.

darnel: lolium temulentum
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

deer's tongue: trilisa odoratissima
Rated relatively safe when taken in appropriate quantities for short periods of time.

devil's claw: harpagophytum procumbens
Rated relatively safe when taken in appropriate quantities for short periods of time.

devil's shoe: string tephrosia virginiana
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

digitalis: digitalis purpurea
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

dill: anethum graveolens
Generally regarded as safe when taken in appropriate quantities for short periods of time.

dinque: pinque rauvolfia tetraphylla
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

dodo: elaeophorbia drupifera
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

dogwood: cornus florida
Rated relatively safe when taken in appropriate quantities for short periods of time.

dong quai: angelica polymorpha
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

dove's dung: ornithogalum umbellatum
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

dragon's blood: daemonorops draco
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

dumbcane: dieffenbachia seguine
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

dwarf mallow: malva rotundifolia
Generally regarded as safe when taken in appropriate quantities for short periods of time.

dyer's broom: genista tinctoria
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

elderberry: sambucus canadensis
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

eucalyptus: eucalyptus spp.
Rated relatively safe when taken in appropriate quantities for short periods of time.

european goldenrod: solidago virgaurea
Generally regarded as safe when taken in appropriate quantities for short periods of time.

european mistletoe: viscum album
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

eyebright: euphrasis officinalis
Rated relatively safe when taken in appropriate quantities for short periods of time.

fenugreek: trigonella foenum-graecum
Rated relatively safe when taken in appropriate quantities for short periods of time.

feverfew: chrysanthemum parthenium
Generally regarded as safe when taken in appropriate quantities for short periods of time.

field horsetail: equisetum arvense
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

fo-ti: polygonum multiflorum
Rated relatively safe when taken in appropriate quantities for short periods of time.

fools parsley: aesthusa cynapium
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

fringe tree: chionanthus virginica
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

gentian: gentiana lutea
Rated relatively safe when taken in appropriate quantities for short periods of time.

german chamomile: matricaria chamomilla
Generally regarded as safe when taken in appropriate quantities for short periods of time.

giant milkweed: calotropis procera
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

glory lily: gloriosa superba
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

goa: andira araroba
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

golden chain: laburnum anagyroides
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

golden dewdrop: duranta repens
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

goldenseal: hydrastis canadensis
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

gotu kola: centella asiatica
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

granadilla: passiflora quadrangularis
Rated relatively safe when taken in appropriate quantities for short periods of time.

ground ivy: glechoma hederacea
Rated relatively safe when taken in appropriate quantities for short periods of time.

guarana: paullina cupana
Rated relatively safe when taken in appropriate quantities for short periods of time.

gum: arabic acacia senegal
Generally regarded as safe when taken in appropriate quantities for short periods of time.

hawthorn: crataegus oxyacantha
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

heart-of-Jesus: caladium bicolor
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

heliotrope: heliotropium europaeum
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

henbane: hyoscyamus niger
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

henna: lawsonia inermis
Rated relatively safe when taken in appropriate quantities for short periods of time.

herb paris: paris quadrifolia
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

holly ilex: opaca
Rated relatively safe when taken in appropriate quantities for short periods of time.

holy sage: salvia divinorum
Rated relatively safe when taken in appropriate quantities for short periods of time.

homalomena: homalomena sp.
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

honey locust: gleditsia triacanthos
Rated relatively safe when taken in appropriate quantities for short periods of time.

hops: humulus lupulus
Rated relatively safe when taken in appropriate quantities for short periods of time.

horse chestnut: aesculus hippocastanum
Rated slightly dangerous, particularly for children, people over 5 and those who take larger-than-appropriate quantities for extended periods of time.

indian acalypha: acalypha indica
Rated relatively safe when taken in appropriate quantities for short periods of time.

indian hemp: apocynum cannabinum
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

indian senna: cassia angustifolia
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

indian tobacco: lobelia inflata
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

indigo: indigofera tinctoria
Rated relatively safe when taken in appropriate quantities for short periods of time.

intoxicating mint: lagochilus inebrians
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

ivy: hedera helix
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

jack-in-the-pulpit: arisaema triphyllum
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

jalap root: ipomoea purga
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

jamaica dogwood: piscidia piscipula
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

jamaican quassia: picrasma excelsa
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

jequerity: abrus precatorius
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

jimsonweed: datura stramonium
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extende periods of time.

jojoba: simmondsia chinensis
Rated relatively safe when taken in appropriate quantities for short periods of time.

juniper: juniperus communis
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

jurema: mimosa hostilis
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

katum: mitragyna speciosa
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

kava-kava: piper methysticum
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

khat: catha edulis
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

knotweed: polygonum aviculare
Rated relatively safe when taken in appropriate quantities for short periods of time.

kola nuts: cola acuminata
Rated relatively safe when taken in appropriate quantities for short periods of time.

kola: cola nitida
Rated relatively safe when taken in appropriate quantities for short periods of time.

kwashi: pancratium trianthum
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

lantana: lantana camara
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

larkspur: consolida ambigua
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

latua: latua pubiflora
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

lavender: lavandula angustifolia
Rated relatively safe when taken in appropriate quantities for short periods of time.

lavender-cotton: santolina chamaecyparissus
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

lemon verbena: aloysia triphylla
Rated relatively safe when taken in appropriate quantities for short periods of time.

lettuce: lactuca virosa
Rated relatively safe when taken in appropriate quantities for short periods of time.

licorice: glycyrrhiza glabra
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

life root: senecio aureus
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

lily-of-the-valley: convallaria majalis
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

lima bean: phaseolus lunatus
Rated relatively safe when taken in appropriate quantities for short periods of time.

linden: tilia europaea
Rated relatively safe when taken in appropriate quantities for short periods of time.

luckynu:t thevetia peruviana
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

malabar nut: adhatoda vasica
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

male fern: dryopteris filix-mas
Rated relatively safe when taken in appropriate quantities for short periods of time.

manaca: brunfelsia uniflorus
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

manchineel: hippomane mancinella
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

mandrake: mandragora officinarum
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

mangosteen: garcinia hanburyi
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

maraba: kaempferia galanga
Rated relatively safe when taken in appropriate quantities for short periods of time.

marigold: calendula officinalis
Generally regarded as safe when taken in appropriate quantities for short periods of time.

marijuana: cannabis sativa
Rated relatively safe when taken in appropriate quantities for short periods of time.

marsh tea: ledum palustre
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

marula: sclerocarya caffra
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

mastic: pistacia lentiscus
Rated relatively safe when taken in appropriate quantities for short periods of time.

mate ilex: paraguariensis
Rated relatively safe when taken in appropriate quantities for short periods of time.

mayappl:e podophyllum peltatum
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

meadowsweet: filipendula ulmaria
Generally regarded as safe when taken in appropriate quantities for short periods of time.

mescal: agave sisalana
Generally regarded as safe when taken in appropriate quantities for short periods of time.

mescal bean: sophora secundiflora
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

mesquite: prosopis juliflora
Rated relatively safe when taken in appropriate quantities for short periods of time.

mexican calea: calea zacathechichi
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

mezereon: daphne mezereum
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

mohodu: cineraria aspera
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

mole plant: euphorbia lathyris
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

monkshood: aconitum napellus
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

moonseed: menispermum canadense
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

mormon tea: ephedra nevadensis
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

morning glory: ipomoea violacea
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

motherwort: leonurus cardiaca
Rated relatively safe when taken in appropriate quantities for short periods of time.

mountain laurel: kalmia latifolia
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

mountain tobacco: arnica montana
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

mugwort: artemisia vulgaris
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

muira puama: ptychopetalum olacoides
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

musk okra: abelmoschus moschatus
Generally regarded as safe when taken in appropriate quantities for short periods of time.

niando: alchornea floribunda
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

night-blooming cereus: selenicereus grandiflorus
Rated relatively safe when taken in appropriate quantities for short periods of time.

nightshade: solanum nigrum
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

niopo: anadenathera peregrina
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

nutmeg: myristica fragrans
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

nux-vomica: strychnos nux-vomica
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

opium poppy: papaver somniferum
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

ordeal bean: physostigma venenosum
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

oregon grape: mahonia aquifolia
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

oriental ginseng: panax ginseng
Generally regarded as safe when taken in appropriate quantities for short periods of time.

pao d'arco: tabebuia sp.
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

papaya: carica papaya
Generally regarded as safe when taken in appropriate quantities for short periods of time.

parsley: petroselinum crispum
Rated relatively safe when taken in appropriate quantities for short periods of time.

partridgeberry: mitchella repens
Rated relatively safe when taken in appropriate quantities for short periods of time.

pasque flower: anemone pulsatilla
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

passionflower: passiflora incarnata
Rated relatively safe when taken in appropriate quantities for short periods of time.

pearly everlasting: anaphalis margaritacea
Generally regarded as safe when taken in appropriate quantities for short periods of time.

peegee: hydrangea paniculata
Rated relatively safe when taken in appropriate quantities for short periods of time.

pennyroyal : hedeoma pulegioides
Rated relatively safe when taken in appropriate quantities for short periods of time.

peony: paeonia officinalis
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

perilla: perilla frutescens
Rated relatively safe when taken in appropriate quantities for short periods of time.

periwinkle: vinca minor
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

peruvian peppertree: schinus molle
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

peyote: lophophora williamsii
Rated relatively safe when taken in appropriate quantities for short periods of time.

physic nut: jatropha curcas
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

pineapple: ananas comosus
Rated relatively safe when taken in appropriate quantities for short periods of time.

pink clover: trifolium pratense
Generally regarded as safe when taken in appropriate quantities for short periods of time.

pinkroot: spigelia marilandica
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

piule: rhynchosia pyramidalis
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

plantain: plantago major
Generally regarded as safe when taken in appropriate quantities for short periods of time.

poinsetti:a euphorbia pulcherrima
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

poison hemlock: conium maculatum
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

poison ivy : rhus toxicodendron
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

pokeweed: phytolacca americana
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

potato: solanum tuberosum
Rated relatively safe when taken in appropriate quantities for short periods of time.

prickly poppy: argemone mexicana
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

privet: ligustrum vulgare
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

pyrethrum: chrysanthemum cinerariifolium
Rated relatively safe when taken in appropriate quantities for short periods of time.

quinine: cinchona sp.
Rated relatively safe when taken in appropriate quantities for short periods of time.

roman chamomile: chamaemelum nobile
Generally regarded as safe when taken in appropriate quantities for short periods of time.

roselle: hibiscus sabdarriffa
Generally regarded as safe when taken in appropriate quantities for short periods of time.

rosemary: rosmarinus officinalis
Rated relatively safe when taken in appropriate quantities for short periods of time.

rosinweed: grindelia spp.
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

rubber vine: cryptostegia grandifolia
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

rue: ruta graveolens
Rated relatively safe when taken in appropriate quantities for short periods of time.

sabadilla: schoenocaulon officinale
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

saffron: crocus sativus
Rated relatively safe when taken in appropriate quantities for short periods of time.

sage: salvia officinalis
Generally regarded as safe when taken in appropriate quantities for short periods of time.

sago cycas: cycas revoluta
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

sanchi ginseng: panax notoginseng
Generally regarded as safe when taken in appropriate quantities for short periods of time.

sandalwood: santalum album
Rated relatively safe when taken in appropriate quantities for short periods of time.

sandbox tree: hura crepitans
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

sarpaganda: rauvolfia serpentina
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

sarsaparilla: smilax aristolochiifolia
Rated relatively safe when taken in appropriate quantities for
short periods of time.

sassafras: sassafras albidum
Rated relatively safe when taken in appropriate quantities for short periods of time.

sassybark: erythrophleum suaveolens
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

saw palmetto: serenoa repens
Rated relatively safe when taken in appropriate quantities for short periods of time.

scarlet poppy: papaver bracteatum
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

scopolia: scopolia carniolica
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

scotch broom: cytisus scoparius
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

sea island: cotton gossypium barbadense
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

sea onion: urginea maritima
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

seven barks: hydrangea arborescens
Rated relatively safe when taken in appropriate quantities for
short periods of time.

shanshi: coriaria thymifolia
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

shavegrass: equisetum hyemale
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

sinicuichi: heimia salicifolia
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

skunk cabbage: symplocarpus foetidus
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

slash pine: pinus elliottii
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

slippery elm: ulmus rubra
Rated relatively safe when taken in appropriate quantities for short periods of time.

snakeplant: rivea corymbosa
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

snakeroot: aristolochia serpentaria
Rated relatively safe when taken in appropriate quantities for short periods of time.

soaptree: quillaja saponaria
Rated relatively safe when taken in appropriate quantities for short periods of time.

soksi: mirabilis multiflora
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

soma: sarcostemma acidum
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

southernwood: artemisia abrotanum
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

spiny ginseng: eleutherococcus senticosus
Generally regarded as safe when taken in appropriate quantities for short periods of time.

spurge: chamaesyee hypericifolia
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

St. John's wort: hypericum perforatum
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

star anise: illicium verum
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

stinging nettle: urtica dioica
Generally regarded as safe when taken in appropriate quantities for short periods of time.

strawberry tree: arbutus unedo
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

sumbul: ferula sumbul
Rated relatively safe when taken in appropriate quantities for short periods of time.

surinam quassia: quassia amara
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

sweet flag: acorus calamus
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

sweetclover: melilotus officinalis
Rated relatively safe when taken in appropriate quantities for short periods of time.

tarragon: artemisia dracunculus
Rated relatively safe when taken in appropriate quantities for short periods of time.

tea: camellia sinensis
Rated relatively safe when taken in appropriate quantities for short periods of time.

thornapple: datura innoxia
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

thyme: thymus vulgaris
Rated relatively safe when taken in appropriate quantities for short periods of time.

tobacco: nicotiana tabacum
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

tomato: lycopersicon esculentum
Rated relatively safe when taken in appropriate quantities for short periods of time.

tonka bean: dipteryx odorata
Rated relatively safe when taken in appropriate quantities for short periods of time.

traveler's joy: clematis vitalba
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

tree tobacco: nicotiana glauca
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

tua-tua: jatropha gossypiifolia
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

tupa: lobelia tupa
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

unmatal: datura metel
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

upland cotton: gossypium hirsutum
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

vanilla: vanilla planifolia
Rated relatively safe when taken in appropriate quantities for short periods of time.

verbena: verbena officinalis
Generally regarded as safe when taken in appropriate quantities for short periods of time.

vilca: anadenathera colubrina
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

virginian scullcap: scutellaria lateriflora
Rated relatively safe when taken in appropriate quantities for short periods of time.

water fennel: onenanthe phellandrium
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

water hemlock: cicuta maculata
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

winter savory: satureja montana
Rated relatively safe when taken in appropriate quantities for short periods of time.

wintergreen: gaultheria procumbens
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

witch-hazel: hamamelis virginiana
Rated relatively safe when taken in appropriate quantities for short periods of time.

woodrose: argyreia nervosa
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

woodruff: galium odoratum
Generally regarded as safe when taken in appropriate quantities for short periods of time.

wormseed: chenopodium ambrosioides
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

wormwood: artemisia absinthium
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

yellow dock: rumex crispus
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

yellow jessamine: gelsemium sempervirens
Rated dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.

yellow ladyslipper: cypripedium calceolus
Rated relatively safe when taken in appropriate quantities for short periods of time.

yohimbe: pausinystalia johimbe
Rated slightly dangerous, particularly for children, people over 55 and those who take larger-than-appropriate quantities for extended periods of time.