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B12 shots can be especially helpful if you are older, do not eat animal products, have conditions that impact nutrient absorption, or take medications that interfere with nutrient absorption
It uses a methyl group donated by S-adenosylmethionine (SAM) to methylate nicotinamide a vitamin B3 form that would otherwise be recycled back into NAD+
Long-term use: Clinical trials only ran 12 weeks, so long-term safety data (6+ months continuous use) comes from anecdotal reports
[7] Improved body composition: From a fitness perspective, reducing subcutaneous fat can help reveal muscle definition and improve overall body composition, which are important factors for bodybuilders and fitness enthusiasts
Smith, R
