do people complain of feeling extremely cold after b12 injections you feel all the time even when others don’t?, You are not alone, and your body may be trying to tell you something important., Being constantly cold isn’t just about the weather. It can be Feeling tired, low on energy
Description
Since GHK-Cu carries copper, taking too much for too long may be a concern for people with liver issues, copper metabolism concerns, or pregnancy/nursing considerations
Protein Expr Purif

B12 can be injected just under the skin (often in the abdomen) or into the muscle (usually the thigh)

Jul-Aug 1995;29(7-8):782-4