vitamin b12 dosage 5000 mcg injection B-12 Injection, 5,000 mcg/mL, 100 mL at Tractor Supply Co Superior Source No Shot Vitamin

Gluteus medius (upper outer buttock)

For most patients, cyanocobalamin provides adequate B12 support

Liver Health: Methionine, inositol, and choline are essential for liver health and function

Having the shot directly in to the muscle allows the liquid vitamin to enter the blood stream quickly, bypassing the digestive system and the gastric acids and many other obstacles anything which is taken via the mouth has to go through to reach the small intestine, for re absorption

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Ensuring proper administration technique (IM deep into muscle, or IV slowly diluted) also helps minimize adverse effects like injection pain or vein irritation