nasal b12 vs injection Nascobal (cyanocobalamin): Uses, Side Effects, Dosage & Reviews b12 injection vs oral stamina

For those receiving injections from a healthcare provider, they will determine the most appropriate site based on individual factors

over ~1 mg/day shows no added benefit in references

This parameter has been further studied, showing that those men and women in the lowest quartile of the IGF-1/IGFBP3 ratio are threefold more likely to meet the Adult Treatment Panel III (ATP-III) definition for MetS, and twice as likely to be insulin resistantthat IGF-1/IGFBP-3 ratio decreases notably as the number of MetS components increases [217]

Density and wrinkle changes appear at 8 to 12 weeks

[1] Other rare side effects noted (mostly in older literature or high-dose use) include: polycythemia vera and peripheral vascular thrombosis in patients receiving repeated injections (though these associations are not well understood, they were listed in prior product literature as possible adverse events)

And yes, you have to stick it in your cat