Vitamin B12 can be used at anytime to increase appetite i wouldnt necessarily say its good for weight loss!


B12 supplementation (injections especially) is quite popular with us BB as its supposed to boost energy levels! but studies do not really support this! if you eat enough eggs or tuna you are pretty much covered for the day this is only my opinion but you dont really need it it is rarely heard of to be deficient in B12 its normally one of the other vitamins! a B complex vitamin would probably be more beneficial it depends on what you want to achieve!