a b12 injection Vitamin Injections: What You Need To Know Compounded Cyanocobalamin (Vitamin B12) Injection

At least, I think so

B12 Intramuscular Dose Standards The standard dose of vitamin B12 via intramuscular injection is 1,000 mcg per 1 ml

Ventrogluteal (upper outer hip) widely regarded among the most secure IM locations because it sits away from large nerves and vessels

However, unlike pro-fibrotic agents, GHK-Cu also upregulates the activity of matrix metalloproteinases (MMPs) and their inhibitors (TIMPs), facilitating the breakdown of scarred or disorganized collagen

[9] How do I apply GHK-Cu Scalp Solution, and how often should I use it

Therefore, there is a very low risk of B12 toxicity, even at high doses like 1,000 mcg a day