Supplements Guide: Side Effects & Best Multivitamins

Vitamins and supplements like melatonin and fish oil offer health benefits but can cause side effects if misused. Learn about the impact of saw palmetto on blood pressure and find the best multivitamins for young women and adults over 50.

Negative Side Effects of Royal Maca

Published Jul,08 2011 | By Demi Buckley

Royal maca is a supplement that manufacturers claim has the potential to promote libido and sexual function in both men and women. The product is primarily comprised of the root of the maca plant, which is native to the mountains of South America.