1000 monthly b12 therapy injections Cyanocobalamin Injection USP mcg/mL Cyanocobalamin Injection: Vitamin B12 Deficiency

For severe cases, the first dose is usually 1,000 mcg given intramuscularly every day or every other day for a week or two

Systemic Therapy: Subcutaneous Injection Protocols For systemic anti-aging, inflammation control, and general wellness, subcutaneous ghk-cu injection is the preferred method as it ensures bioavailability

"Analytical approaches for the detection of emerging therapeutics and non-approved drugs in human doping controls." Journal of pharmaceutical and biomedical analysis 101 (2014): 66-83.

This is one of the few direct comparisons in this encyclopedia where the clinical evidence produces a clear recommendation rather than a balanced assessment of trade-offs