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Red clover can cause rash-like reactions, muscle ache, headache, nausea, and vaginal bleeding (spotting) in some women.
Special Precautions & Warnings:Pregnancy and breast-feeding: Red clover is LIKELY SAFE when taken by mouth in amounts commonly found in food. However, it is LIKELY UNSAFE when taken by mouth in medicinal amounts. Red clover acts like estrogen and might disturb important hormone balances during pregnancy or breast-feeding. Don't use it.
Not enough is known about the safety of red clover when applied to the skin during pregnancy or breast-feeding. Stay on the safe side and don't use it.
Bleeding disorders: Red clover might increase the chance of bleeding. Avoid large amounts and use with caution.
Hormone-sensitive conditions such as breast cancer, uterine cancer, ovarian cancer, endometriosis, or uterine fibroids: Red clover might act like estrogen. If you have any condition that might be made worse by exposure to estrogen, don't use red clover.
Protein S deficiency: People with protein S deficiency have an increased risk of forming blood clots. There is some concern that red clover might increase the risk of clot formation in these people because it has some of the effects of estrogen. Don't use red clover if you have protein S deficiency.
Surgery: Red clover might slow blood clotting. It might increase the chance of extra bleeding during and after surgery. Stop taking red clover at least 2 weeks before a scheduled surgery.
There isn't enough information to rate the safety of red clover when applied to the skin.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.