Herbs and Supplements to Avoid During Pregnancy and Breastfeeding
Some herbs and supplements can be harmful to take by women who are pregnant or breastfeeding. Always check with a doctor before taking an herb or supplement.
Herbs and Supplements to Avoid
These herbs and supplements are not safe to take while pregnant or breastfeeding:
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Ammi visnaga is a flowering plant that may stimulate the uterus. D1
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Berberine is a chemical found in some plants that is taken as a supplement.
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Bitter melon
is a tropical, fruit-like gourd.
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Black cohosh
is a plant that can be taken as a supplement.
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Cannabis is an herb. It may cause preterm birth.
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Cat's Claw
is a vine that can be taken as a supplement or tea. It may cause spontaneous abortion.
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Chamomile
is a flower. When taken as a tea it may lead to health problems. It is likely safe to use on the skin.
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Cinnamon
is a spice that comes from a tree. It can be toxic in large amounts. D1
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Dong quai is a plant. The root is taken as a supplement or tea and may negatively affect the fetus.
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Fenugreek
is an herb that is taken as a supplement. It may cause contractions. A1, A2
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Feverfew
is a flower that can be taken as a supplement or made into a tea. It may cause contractions.
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Goldenseal
is a plant that contains berberine.
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Licorice
is a plant. The root has been used as a flavoring and can be taken as a supplement or tea. B1
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Melatonin
is a supplement that has been used to improve sleep. It has not been tested in pregnant women.
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Pennyroyal is a plant that may lead to spontaneous abortion when taken as high doses.
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Red clover
is a flower that can be taken as a supplement. C1
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Red yeast rice
is traditional Chinese food item that can also be taken as a supplement.
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Sage
is an herb that may cause miscarriage in pregnant women when taken in large amounts. D1
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Thyme is an herb that may cause miscarriage in pregnant women when taken in large amounts. D1
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Vitamin B
6
is a supplement. It may be safe to take but can interact with anti-nausea medicines.
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Willow bark
comes from a tree. It may not be safe to take during pregnancy or while breastfeeding. D1
References
Fenugreek
REFA1
Ouzir M, El Bairi K, et al. Toxicological properties of fenugreek (Trigonella foenum graecum). Food Chem Toxicol. 2016 Oct;96:145-154.
REFA2
Samavati R, Ducza E, et al. Herbal laxatives and antiemetics in pregnancy. Reprod Toxicol. 2017 Sep;72:153-158.
REFB
Licorice
REFB1
Räikkönen K, Seckl JR, et al. Maternal prenatal licorice consumption alters hypothalamic-pituitary-adrenocortical axis function in children. Psychoneuroendocrinology. 2010 Nov;35(10):1587-1593.
REFC
Red Clover
REFC1
Nelsen J, Ulbricht C, et al. Red clover (Trifolium pratense) monograph: a clinical decision support tool. J Herb Pharmacother. 2002;2(3):49-72.
REFD
Safety
REFD1
Ahmed M, Hwang JH, et al. Safety classification of herbal medicines used among pregnant women in Asian countries: a systematic review. BMC Complement Altern Med. 2017 Nov 14;17(1):489.
- EBSCO NAT Review Board
Eric Hurwitz, DC
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202002
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20200526