Wellness 20 July 2025 7 min read Needle Size for a B12 Injection: A Simple Guide By Alaiyka Parvez Owner, CoLaz Aesthetics Clinic The short version For an intramuscular B12 injection, the usual choice is a 22 to 25 gauge needle, 1 to 1.5 inches long, given at 90 degrees into the deltoid
In animal models, this translated to meaningful reductions in fat mass without changes in food intake
Body weight and adiposity
Sometimes, its not the story we want, with pigmentation, those sneaky wrinkles, and a bit of sag here and there
Its whitening effects are permanent only if you will maintain it (by avoiding exposure to sunlight)
Sometimes another treatment is likely to be a better fit