

This might increase the risk of bleeding during surgery. Surgery: Horny goat weed might slow blood clotting. Horny goat weed might worsen some estrogen-sensitive conditions, such as breast and uterine cancer. Hormone sensitive cancers and conditions: Horny goat weed acts like estrogen and can increase estrogen levels in some people. Taking horny goat weed might make bleeding disorders worse. This might increase the risk of bleeding. Bleeding disorders: Horny goat weed might slow blood clotting. Avoid using it.īreast-feeding: There isn't enough reliable information to know if horny goat weed is safe to use when breast-feeding. Pregnancy: Horny goat weed is possibly unsafe when taken by mouth during pregnancy. Serious side effects including severe breathing problems have been reported. But some types of horny goat weed are possibly unsafe when used for a long period of time or in high doses. Another extract containing a chemical called icariin has been taken safely for up to 6 months.

A specific extract of horny goat weed containing phytoestrogens has been taken by mouth safely for up to 2 years. When taken by mouth: Horny goat weed extract is possibly safe when used short-term.
