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
Some Vitamin B12 injections may contain dairy products or be manufactured in facilities that also process dairy products
Each medication has a different purpose and dosage schedule
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5-Amino-1MQ is a novel peptide compound that supports metabolic health at the cellular level