Complementary Health Approaches

Frequently Asked Questions

20. What has NIH-sponsored research shown about the use of saw palmetto for urinary tract symptoms related to prostate enlargement?

Two NIH-sponsored studies found that saw palmetto was no more effective than a placebo (pills containing only inactive substances) in relieving urinary tract symptoms associated with prostate enlargement in older men. One of these studies used doses of saw palmetto up to three times what men usually take. No harmful side effects of saw palmetto were identified in these studies.