how long does a b12 injection last Do You Need Prescription for Injections? Feeling worse after B12 Injection:

After 1 month of treatment in pernicious anemia patients, the once weekly dosing of 500 mcg B12 intranasal gel resulted in a statistically significant increase in B12 levels when compared to a once monthly 100 mcg IM dose

NNMT inhibition with 5-Amino-1MQ hasnt been studied in individuals with severe hepatic or renal dysfunction, where methylation pathway alterations could compound pre-existing metabolic issues

If you have been offered B12 injections at a beauty salon, nail bar or non-medical clinic, it is worth asking what form of B12 they are administering and whether it is being prescribed by a qualified prescriber

As with most treatments, there are some mild side effects

The real-world implications are significant