What You Need to Know About B-Vitamins

The safety record of the B-complex vitamins is extraordinarily good. Since their discovery, beginning with thiamin (B-1) in 1911, many thousands of studies have verified an unequaled therapeutic value of these essential substances. Side effects have been rare, and toxicity is nearly nonexistent, even at the highest doses. Some cautions are in order, of course, and here are some of the most important.