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If deemed ineligible after your Nexa provider consultation, you receive a full refund.
There is no human head-to-head bioavailability trial declaring one route superior, so pick the route your protocol specifies and hold it consistently
Vitamin B12 is a water-soluble vitamin that supports: Red blood cell production Nervous system function DNA synthesis Energy metabolism B12 injections deliver this essential nutrient directly into the bloodstream, bypassing absorption issues that come with oral supplements
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
