b12 injections and birth control Vitamin Injection – Prescription Vitamins in Minutes Vitamin B12 Deficiency: Symptoms, Causes
Description
that is, if 14 patients were treated for 4 years with metformin 850 mg t.d.s., one would develop vitamin B12 deficiency
References Conlon, N., & Ford, D

The effectiveness of PRF treatment can be long-lasting, although individual results may vary

There are no known cases where a vitamin B12 injection has impacted the effectiveness or caused complications with current COVID vaccine programmes
