injectable vitamin b12 dosage Injection5000 mcg/mL Sterile Solution Vita-Jec B12 1000 mcg/mL

That's an extremely low effective concentration

Bioavailability is the ability of a drug or other substance to be absorbed and used by the body. Intramuscular injections with a needle offer anywhere from 75% to 100% much higher bioavailability

That's not a failure of B12 that's how targeted nutrition works

Metabolic Safety: IGF-1 and Glucose Effects One of the most clinically significant safety findings relates to AOD-9604s metabolic profile, particularly its lack of effects on insulin-like growth factor-1 (IGF-1) and glucose metabolism

This supplement helps to give your chicks a healthy start, and it can help to support them in times of stress

Once liquid, the peptide must be kept refrigerated and used within 30 to 60 days [verify with brand/source]