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.

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What Natural Supplements Raise Serotonin?

Published Jul,08 2011 | By Wendy Melton

Serotonin is a neurotransmitter located in the brain, blood platelets, and the lining of the digestive tract. It improves mood and helps to promote sleep and relaxation. It is also what makes us feel full or "satisfied" after we eat.