Subcutaneous (subQ or SQ) injections are shots given in the fatty tissue layer (subcutaneous fat) under your skin. Your skin has many layers, and the subcutaneous layer is beneath the epidermis and ...
Vitamin B12 is an essential vitamin, and low levels are linked to obesity. B12 shots could improve fatigue if you have a deficiency, but there’s not much research on them as a weight loss treatment.