how often can you do b12 injections Should Get A Shot For Optimal Health? How Long Does a B12

Vitamin B12 shots are generally safe, with minimal side effects such as mild soreness at the injection site

4C 2 years

refrigeration at 4 C (39 F) is acceptable for short-term storage (days to weeks)

Sattar N, McConnachie A, Shaper AG, Blauw GJ, Buckley BM, de Craen AJ, Ford I, Forouhi NG, Freeman DJ, Jukema JW, Lennon L, Macfarlane PW, Murphy MB, Packard CJ, Stott DJ, Westendorp RG, Whincup PH, Shepherd J, Wannamethee SG

Serious and rarer side effects can include muscle cramping, irregular heartbeat, shortness of breath, slurred speech, vision changes, chest pain and weakness on one side of the body

My doctor gave me 5 B12 shots for 5 weeks