This may not be a complete list but it contains most herbs that should be avoided.
Contraindicated during pregnancy due to the stress they place on the kidneys.
- Juniper berries
- Horsetail/Shave Grass
- Buchu
Should be avoided until the last 4 to 6 weeks of pregnancy.
- Squaw Vine (Mitchella repens)
- Blue Cohosh (Caulophyflum thalicotroides)
- Black Cohosh (Cimicifuga racemosa)
Too strong for pregnancy
- Pennyroyal
- False Unicorn Root (Helonias dioica)
- Dong Quai (Angelica spp)
Because it can lower prolactin levels, is best discontinued during the last trimester of pregnancy
- Chaste tree
Other herbs that are to be avoided
- rue (Ruta graveolens)
- golden seal (Hydrastis canadensis)
- juniper (Juniperus communis)
- autumn crocus (Colchicum autumnale)
- mistletoe (Viscum album)
- bearberry (Berberis vulgaris)
- poke root (Phytolacca decandra)
- sothernwood (Artemisia abrotanum)
- wormwood (Artemis absinthium)
- mugwort (Artemisia vulgaris)
- tansy (Tanacetum vulgare)
- nutmeg (Myristica fragrans)
- cotton root (Gossypium herbaccum)
- male fern (Dryopteris felix-mas)
- thuja (Thuja occidentalis)
- calendula (Calendula officinalis)
- beth root (Trillium erectum)
- feverfew (Chrysanthemum parthenium)
- sage (Salvia officinalis)
