intramuscular vitamin b12 injections (Cyanocobalamin Injections) — Mountainside Medical Vitamin B12 Injection - We
Description
On average, our patients visit us every three to seven days for injections and every one to two weeks for IV therapy until symptoms begin to improve

[DOI] [PubMed] [Google Scholar] 34.Weinert BT, Schlz C, Wagner SA, Iesmantavicius V, Su D, Daniel JA, et al
Yes, you can give yourself Vitamin B12 shots

Doctors can reduce doses, increase intervals, or change ingredients to ensure safety

Mullane explains that if you have digestion problems or are coeliac then using a spray ensures that the nutrient is absorbed in the mouth and bypasses the digestive system
