b12 injection is what drug class Cyanocobalamin Vitamin 1000 mcg — Mountainside Medical Cyanocobalamin (B12) Injection 1000 mcg/mL,
Description
No delayed-onset adverse effects emerged that were not apparent in the initial weeks of treatment
Also available on amazon.com domestically and in select international markets

GLOW provides follow-up testing to track your response to the injection schedule

For patients without clear indication for b12 supplementation, using a compounded combination means paying extra for an additive that may provide no benefit
