LOL .......Just kidding, that was only a joke!!!! No, B-12 injections will have no affect on buttocks size. That is unless of course you start to gain weight, in which case, you may gain a little there as well as everywhere else. B-12 shots are typically given to patients with B-12 deficiency, such as in patients with malnutrition, chronic disease , neuropathy, immunosuppression, and for patients who are producing insufficient number of blood cells. It should have little to no affect on your buttocks.
Hi lacreme, I have not heard of this being an effective way to produce a buttock enlargement, nor does it make any sense that it should. The two most commonly used procedures are (1) insertion of a buttock implant and (2) fat injections. These may be done together and are even more effective in producing the desired results when they're combined with liposuction contouring around the buttocks. The maximum result, then, is enlargement (via one or both methods) ADD removal of some of the surrounding fat. I hope that this helps, and good luck, Dr. E