can pharmacy give b12 injections Do You Need a Prescription for Injections? Where to Get B12 Shots:

You should not take Methycobal inj if you are allergic to mecobalamin or any other ingredients of methycobal injection, if you are suffering from any type of kidney disease or if you have or have ever had Leber's hereditary optic neuropathy

Duzel A et al

[22] The injections are usually given in a clinic setting, but in some cases patients may be taught to self-administer at home under medical guidance

Route-specific bulk-substance evaluation context for GHK-Cu

In simple terms: Capsules: easier, gut-focused, less direct systemic exposure Injections: more direct, stronger systemic exposure, more care required This does not mean one form is always better