Can black cohosh make you gain weight?
When taken by mouth: Black cohosh is possibly safe when taken appropriately for up to one year. It can cause some mild side effects such as stomach upset, headache, rash, a feeling of heaviness, and weight gain.
Does black cohosh really work?
Based on current research, black cohosh is most likely to relieve symptoms related to reductions or imbalances in the hormone estrogen. A 2010 review concluded menopausal women experienced a 26 percent reduction in night sweats and hot flashes when using black cohosh supplements.