Vitamin B12 study hints at a molecular mechanism for acne pathogenesis The Pharmaceutical Journal Is B12 making you break out? It's possible. We've found in our own experience and in clinical studies that certain forms of vitamin B12 can trigger inflammatory acne for some individuals. Is B12 making you break out? It's possible. We've found in our own experience and in clinical studies that certain forms of vitamin B12 can trigger inflammatory acne for some individuals. Can Vitamin b12 Injections Cause Nasty Rashes? How to Heal A B12 Breakout TikTok Did Vitamin B12 Give Me Acne? Mixed Makeup