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.

Vegetarian Sources of Vitamin D3

Published Jul,08 2011 | By Carolyn Russell-DeLucas

Vitamin D3, or cholecalciferol, helps with the regulation of healthy bones, muscle, immune system, insulin and metabolism. Vitamin D3 is a fat-soluble vitamin that is available in some of the foods that you consume and in supplement form.