what is better b12 injections or tablets vs Pills: Richmond's Complete Guide Oral vitamin B12 versus intramuscular

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Here's Why Vitamin B Can Cause Rashes, Hives, and Flushing B vitamins are essential nutrients that help your body function at its best

Many patients start noticing weight loss within a few weeks

Vitamin B12 shot side effects Most people tolerate vitamin B12 injections well, but possible side effects include: Mild: soreness or redness at injection site, mild diarrhea, nausea, headache, itching Rare but serious: allergic reactions (rash, swelling, difficulty breathing), low potassium (hypokalemia), dizziness or heart rate changes Get emergency medical help if you have signs of an allergic reaction to Vitamin B12: hives