No actual B-50 vitamin exists. The B-50 vitamin complex is a combination of different B-complex vitamins, usually in amounts of 50 milligrams or micrograms, or mg and mcg, depending on the specific B vitamin. Vitamin B-50 supplements might also contain other ingredients. The amounts of B vitamins in the B-50 complex are generally much higher than the recommended daily allowance. B-complex vitamins work together, so taking a supplement that contains all of them is the best way to ensure you get the maximum benefit from them outside of eating foods high in vitamin B. Ask your doctor before taking B-50.
Purpose
The B-complex vitamins play a role in numerous body functions, including food metabolism, vision, nervous system functioning and red blood cell formation. Because B-complex vitamins are water-soluble, your body doesn't store them. Thus, you need to get an adequate supply every day. Refining grains and cooking vegetables destroys B-complex vitamins. Each of the B vitamins has specific benefits.
Amounts
A typical B-50 vitamin contains 50 mg of B-1, also called thiamine; 50 mg of riboflavin, or B-2; and 250 mg of niacin, or B-3. B-50 also contains 50 mg of pantothenic acid, or B-5, and the same amount of B-6, or pyroxidine. Biotin, or B-7, and B-12, also called cyanocobalamin, are included at 50 mcg each. B-50 also contains 400 mcg of folic acid, or B-9.
Percentages
B-50's B-1 dose is 3,333 percent more than the 1.5 mg recommended daily value, or RDA, while the B-2 dose is 2,941 percent of the recommended 1.7 mg RDA. The B-3 dose is 1,250 to 1,667 percent of the suggested 15 to 20 mg dose. The amount of B-5 in the supplement is 500 percent of the 10 mg recommended dose. The dose of B-6 is 2,000 percent of the recommended 2.5 mg. B-7 doesn't have a recommended dietary amount, but the GNC B-50 supplement contains 50 mcg, which the label states is 17 percent of the daily dose. B-50 also contains 100 percent of the recommended amount of folic acid and 833 to 1,250 percent of the recommended 4 to 6 mcg B-12 dose.
Considerations
Although the doses in B-50 are higher than the recommended doses of B vitamins, the amounts in B-50 are not outside the therapeutic range, according to Acu-Cell, and should not have any toxic effects. Nonetheless, ask your doctor before taking megadoses of any vitamin, including the B-50 supplement. No proven benefits to taking megadoses of B-complex vitamins exist.
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