US$ 29.86
fda vitamin b12 injections Compounded Cyanocobalamin (Vitamin B12) Injection Cyanocobalamin (Vitamin B12) Injection is sold as an FDA approved generic drug B-12 Compliance Injection: Package Insert
Description
While you can take B12 and B complex together, its likely not necessary because the B complex will contain B12

1 Deficiency is often due to a lack of B12 foods in the diet, absorption issues, and/or genetic mutations that affect uptake
B12 injections are recommended for individuals who are deficient in vitamin B12 or are at risk of developing a deficiency due to dietary habits, medical conditions, or impaired absorption

High-quality, pharmaceutical-grade B12

This is the most common pattern in dermatology editorial guidance
