There are different size needles for subcutaneous and intramuscular injections, so be sure to discuss your B12 injection site intentions with your doctor and follow his or her recommendation
an unusual or allergic reaction to methylcobalamin, cobalt, other medicines, foods, dyes, or preservatives
By improving liver function and fat transport, and supporting energy production through B12, they can make an active, calorie-controlled lifestyle more effective
Vitamin B12 (cyanocobalamin) dosing, indications, interactions
However, following a balanced, nutrient-dense meal plan can improve results and make the body more responsive to metabolic interventions
Oral bioavailability has not been clearly measured in humans