New studies continue to explore cardiovascular benefits, effects on fatty liver disease, and potential applications beyond weight loss
Powder provides maximum flexibility and typically the best per-milligram cost
Route: The injection is typically given intramuscularly (IM) into a large muscle, such as the thigh or buttock, or subcutaneously (SC) into the subcutaneous tissue
The shot is a shorter option for eligible patients who prefer an injection
Adults Over 50: Age-related reduction in stomach acid and digestive efficiency lowers B12 absorption, so many older adults benefit from injections or high-dose oral supplements
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