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Before taking a B12 shot, tell your doctor if you: Are allergic to B12, cobalt or any multivitamin combinations Have vision issues or Lebers disease (a genetic condition that causes vision loss) Have any infections Have been diagnosed with folic acid deficiency or iron deficiency Are pregnant, breastfeeding, or planning to get pregnant Are taking any supplements, including herbal supplements Are taking any medications, such as folic acid, methotrexate, chloramphenicol, colchicine, para-aminosalicylic acid (PAS), or pyrimethamine Have liver or kidney disease Have a drinking problem Health News Are Microplastics Linked To Higher Heart Attack Risk

Side effects like reactions at the injection site are common

Discovery and development of folic-acid-based receptor targeting for imaging and therapy of cancer and inflammatory diseases

It supports red blood cell production and helps convert food into usable fuel

Blood work isn't always required before your first injection, but it gives us a clear picture of exactly where your levels stand

B12 plays a role in immune function, potentially helping athletes stay healthy and maintain their training schedules