Vitamin B12 is manufactured by T.P. Drug Laboratories. Each amp contains 1000mcg, there is 50x1ml amps in the box.
Although the functions of vitamin B12 are numerous, those important to bodybuilders include carbohydrate metabolism and maintenance of nervous system tissue (the spinal cord and nerves that carry signals from the brain to muscle tissues). Stimulation of muscles via nerves is a critical step in the contraction, coordination and growth of muscles.
Vitamin B12 is available only from foods of animal origin; therefore,it is very important for athletes following a strict vegetarian diet to consult a physician about vitamin B12 supplementation. In fact, B12 shots are popular with countless athletes, vegetarians and nonvegetarians alike, many of who swear it helps them perform better.