Most people don’t need to take a B complex supplement, as their diet should provide enough of the vitamins. If you don't have enough vitamin B12, you can have B12 shots or take it as a tablet, depending on what
However, one should note that none of these have been yet approved by the FDA as a weight loss treatment. The hCG shots are legal, but any over-the-counter hCG products are not legal; hence, the FDA has sent out a legal notice to all of those companies which market these hCG products...