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.

What Are Side Effects of Vitamin B12 Tablets?

Published Jul,08 2011 | By Matthew Busse

Vitamin B12, also known as cobalamin, is one of the largest and most complex vitamins. Several biological processes require vitamin B12, and deficiencies of this vitamin can cause several health conditions, including anemia. While vitamin B12 is generally safe, some side effects may occur.