b12 injection hurt does Best Vitamin B12 Injection Sites Vitamin B12 Injections: Good or

It's the work that turns intention into results, and it has standalone value before a single medication ever enters the picture

Bioavailability and daily requirement of vitamin B12 in adult humans: An observational study of its colonic absorption and daily excretion as measured by [13C]-cyanocobalamin kinetics

JVIM Volkmann M (2017) Chronic diarrhea in dogs retrospective study in 136 cases

If you have a temporary deficiency or increased requirement (say, after a surgery or during recovery from an acute illness), you might only need a short course, perhaps a few weeks of injections, until your vitamin levels normalize or you can meet your needs by mouth again

Medications like omeprazole, cimetidine, lansoprazole, and folate can interfere with B12 absorption

After about a week, the injections make your lip look fuller or poutier without adding any volume to your lip