Acts as an antioxidant. Teas are not effective because silymarin is not water soluble. It may have a mild laxative effect and is a possible allergen for those sensitive to ragweed. May lessen symptoms but does not reduce prostate size. May work by counteracting androgenic hormones and fighting inflammation.
Teas are of little value because few of the active ingredients are water soluble.
Large amounts may cause diarrhea. Consumer Reports on Health, March l999, pp. Berkeley Wellness Letter 4. Dietary Supplements, August l998 5.