CNM

The College of Naturopathic Medicine

Schedule 20 (formerly Schedule 3)and Restricted Herbs

(Schedule 3 has been re-designated Schedule 20 in the 2012 Human Medicines Act)

These herbs are subject to legal restrictions due to potential toxicity or side effects

FOR USE BY QUALIFIED HERBALISTS ONLY.

External Use only
Latin name / Common name / Strength / Amount used (max./100ml)
Aconitum nepalis / Wolfs bane / 1.3%
Arnica montana / Leopards bane / 10%
Conium maculatum / Spotted hemlock / 7%
Internal Use
Latin name / Common name / Strength* / Max. dose/week
Atropa belladonna (herb) / Deadly nightshade leaf / 1:10 / 10 ml
Atropa belladonna (radix) / Deadly nightshade root / 1:10 / 6 ml
Bryonia dioica / White bryony / 1:10 / 10 ml
Chelidonium majus / Greater celandine / 1:10 / 50 ml
Chinchona pubescens / Peruvian bark / 1:5 / 50 ml
Convallaria majalis / Lily of the valley / 1:8 / 1:5 / 24 / 20 ml
Datura stramonium / Jimson weed / 1:10 / 10 ml
Ephedra sinica / Ephedra / 1:5 / 50 ml
Gelsemium sempervirens / Yellow jasmine / 1:10 / 5 ml
Hyoscyamus niger / Henbane / 1:10 / 20 ml
Lobelia inflata / Lobelia / 1:8 / 32 ml
Phytolacca decandra / Poke root / 1:5 / 8 ml
Piscidia erythrina / Jamaican dogwood / 1:5 / 8 ml

*If tincture strength is different from above, dose should be adjusted accordingly.

Pregnancy and breast feeding

Do not prescribe herbs to pregnant and breast feeding women unless fully qualified and experienced in this field.

EMMENAGOGUES (stimulate menstruation)

Angelica spp.Juniperus communisCrocus sativa

Leonorus cardiacaCaulophylum thalictroides Mentha pulegium

Cimicifuga racemosa Petroselinum crispumCommiphora molmol

Vitex agnus-castusHydrastis canadensis

ANTHRAQUINONE GLYCOSIDES (potent laxatives which may affect uterine muscles)

Cassia angustifoliaRheum palmatumAloe vera barbadensis

Rhamnus purshiana

Other herbs with potential risks include:

Apium graveolensRosmarinus officinalisArtemisia spp.

Ruta graveolensBerberis vulgarisSalvia officinalis

Chelidonium majusSanguinaria canadensisChinchona spp

Tanacetum spp.Cinnamomum zeylandicum Thuja occidentalis

Dryopteris filix-mas Thymus officinalisGossypium herbaceum

Tussilago farfaraOriganum vulgareViscum album

Phytolacca decandra.

Breast-feeding

Do not give herbs to breast-feeding women as herbal components pass into breast milk.

Phototoxicity

Furanocoumarins in some members of the Umbelliferae family may causes phototoxicity if they come into contact with the skin at the same time as sun exposure

Allergy

Allergies theoretically possible from any plant chemical, butcommon suspects are volatile oils in umbelliferae family and sesquiterpenes in compositae family (chamomile, feverfew).

Toxicity

Pyrrolizidine alkaloids (PAs) in boraginacea family can cause liver damage and should not be used for extended periods or in patients with poor liver function. These include:

Symphytum spp.Tussilago farfaraBorago officinalis

Eupatorium perfoliatumLithospermum officinale