b12 injection im or subcutaneous Vitamin Sites: All You Need to Know Vitamin B12 Injections | B12

Mild side effects can include short-term injection-site redness and very rarely transient mild headache in the first week

Only two forms of B12 are active as a coenzyme in the body: Methylcobalamin and adenosylcobalamin are the active coenzyme forms of B12

Cyanocobalamin (Vitamin B12) Injection is sold as an FDA approved generic drug

Tolbutamide is usually considered compatible with breastfeeding

In rare cases, there may be: arrhythmia

If a pregnant patient has a documented deficiency of one or more B vitamins or a condition like hyperemesis that prevents oral intake, the benefits of correcting the deficiency (preventing serious maternal and fetal complications) outweigh any minimal risk from the injection