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Herbs Contraindicated in Pregnancy

As a general rule, NO herbs should be used during pregnancy, except under the direction of a qualified Naturopath or Medical Herbalist. The only exception to this is raspberry leaf, which can be used throughout pregnancy. The following is a list of herbs that are contraindicated in pregnancy. This list is not guaranteed to be complete, use only as a guide.

Aloe Vera (Aloe) - Can cause intestinal cramping when used alone.
Barberry (Berberis vulgaris) - Effects the uterus
Black Cohosh (Cimifuga racemosa) - Can produce nausea / vomiting
Broom tops (Cystisus scoparius) - Can cause nausea, vomiting, and diarrhea, with overdosing
Buchu (Barosma / Agothosma betulina)
Buckthorn Bark (Frangula alnus)
Cat's Claw (Uncaria tomentosa)
Coltsfoot (Tussilago farfara)

Comfrey (Symphytum officinalis) - Due to alkaloid content.
Croton Oil (Croton tiglium)
Damiana (Turnera aphrodisiaca)
Devil's Claw (Harpagophytum procumbens)
Dong Quai (Angelica sinensis)
- Can cause uterine contractions.
Fennel (Foenuculum vulgare)
Fenugreek (Trigonella foenem-graecum)
Feverfew (Chrysanthemum pathenium)
Goldenseal/Echinacea (Hydrastis/Echinacea)
Gotu Kola (Centella asiatica)

Horseradish (Amoracea rusticanum) - Can cause diarrhea / night sweats
Juniper (Junijperus communis) - May cause dermatitis
Lady's Slipper (Cypripedium pubescens)
Leptandra (Veronicastrum virginicum)
- Can cause irritations of the gastro-intestinal tract
Motherwort (Leonurus cardiace)
Marigold (Calendula officinalis)
Mate (Ilex paraguariensis)
Meadow saffron (Colchicum autumnale)
- Teratogenic as tincture.
Neem tree (Azadirachta indica)
Oregon grape root (Berberis aquifolium)
Parsley root (Petroselinum sativum)
Rosemary (Rosmarinus officinalis)
Rye ergot (Secale cornutum)
Sage (Salvia officinalis)

St John's Wort (Hypericum perforatum) - Avoid.
Senna (Cassia acutiforia)
Stone root (Collinsonia canadensis)
Thyme (Thymus vulgaris)
- Excessive use of thyme can lead to symptoms of poisoning and to overstimulation of the thyroid gland.
Uva-ursi (Arctostaphylos uva-ursi) - Avoid.
Wild Celery (Apium graveolens)
Wormwood (Artemisia absinthium)
- Can cause profound mental and physical changes when taken over a long period of time. Large doses are convulsant and poison.
Yarrow (Achillea millefolium)
Yellow jasmine (Gelsemium sempervirens)

Do Not Use: American mandrake, Blood root, Cascara, Cinchona, Cotton root bark, Greater celendine, Malefern, Pennyroyal, Poke root, Red Clover, Rue, Sage, Southernwood, Squaw vine, Tansy.


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