Methylated Vitamins: Chewable Methylated Multivitamin Methyl Life Supplements How to Give Yourself Intramuscular (IM) Injections Patients & Families UW Health Ivy Grove Surgery : Self administration of B12 injection IM Shots: B12, B Complex, CoQ10 Benefits and What to Expect Dr. prescribed B12 injections. Pharmacy only gave me vials. Where do you get your needles and syringes? What size?? Where do I inject? : r B12_Deficiency The Impact of B Vitamins on Methylations, Regeneration and Epigenetics: Results of a Randomized Double Blind Study of Synthetic versus Plant based Vitamin Complexes