Goodman & Gilman's The pharmacological basis of therapeutics (10th ed.)
Vigorous shaking creates foam and damages peptides through mechanical forces
As B12 is a water-soluble vitamin, it's generally considered safe (because any not used will be excreted via your urine), but even so you shouldn't take more than the recommended doses unless recommended to do so by your GP, as some studies have shown possible negative impacts of overdoing it
Safe Injection Techniques: Learn exactly how and where to administer injections safely and effectively
From animal studies to human evidence, this conversation separates facts from assumptions so you can understand what is known, what is not, and what doctors want patients to be cautious about before considering it
The moment you introduce a liquid, the clock starts ticking