how often should you inject b12 Get Injections? Vitamin B12 Dosages: Your GoodRx

Some protocols split the daily dose into two administrations (morning and evening) to maintain more consistent plasma levels, though definitive human PK data remain sparse as of 2026

Overgrowth of bacteria: Some people develop vitamin B 12 deficiency as a result of conditions that slow the movement of food through the intestines (diabetes, scleroderma, strictures, diverticula), allowing intestinal bacteria to multiply and overgrow in the upper part of the small intestine

High doses of Vitamin B6 and B12 may also lead to an imbalance in the gut microbiome, which can cause inflammation in the skin and contribute to the development of Rosacea fulminans

For decades, the default answer from doctors and internet forums has been exactly the same: Minoxidil