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Injection considerations Most research peptides are administered subcutaneously, meaning into the fat layer just beneath the skin

Although doctors may recommend B12 injection for this purpose when weakness is related to peripheral neuropathy, more research is needed on effectiveness, and Medicare doesnt consider this medically necessary

As well as the risks of self-injection, such as accidentally injecting air, there were concerns that peptides could interfere with medicines people -were already taking

Vitamin B12 injections are typically prescribed for people with symptoms associated with a vitamin B12 deficiency