hives after b12 injection injection? : r/Zepbound Vitamin B12 Side Effects

Medical Conditions, Surgeries, and Medications Lack of intrinsic factor (a protein made in the stomach thats needed for B12 absorption) - this condition is called pernicious anemia Thyroid disease HIV/AIDS (human immunodeficiency virus/acquired immunodeficiency syndrome) Autoimmune diseases like type 1 diabetes, where the immune system in the body attacks its own tissues Gastric bypass surgery (weight loss surgery) Chronic gastritis surgery Certain medications like heartburn drugs (proton pump inhibitors) which reduce stomach acid production Who Is At Risk of Vitamin B12 Deficiency

Suitable for vegans and vegetarians No preservatives, additives, or animal products Administered by trained medical professionals in a sterile, clinical environment Vitamin B12 injections are extremely safe when given appropriately and are well-tolerated by most people

continue vitamin supplementation during treatment and for 21 days after the last dose of PEMFEXY to reduce the severity of hematologic and gastrointestinal toxicity of pemetrexed [see Dosage and Administration (2.4)]

Sep 2021;39:101080

10.1038/s41586-019-1173-8 28 EsseR.BarrosoM.Tavares De AlmeidaI.CastroR