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 RxList
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NAD for skin aging is promising, but topical NAD lacks the large randomized trials found with retinoids and peptides
So far the medication is great
However, for those who have dietary restrictions or absorption issues, supplements are often necessary to meet the required intake
Effects seen after administration: Vitamin B12 Injection Shows Quick Effects.-Picture Courtesy: The Well Dog Place Vitamin b12 when given as oral supplement, it takes time to reach systemic circulation thats why it takes time to show effects after administration