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I know it can be dangerous and its been another great stressor and cause of health anxiety for me as I pretty much treat myself
Oral methylcobalamin for everyday energy support Research has shown that high-dose oral B12 even in people with some absorption challenges can achieve adequate blood levels through passive diffusion, a secondary absorption pathway that doesn't depend on intrinsic factor
Injectable/IV NAD+ is not FDA-approved (or approved by any major regulator) for energy, metabolic or longevity uses, and its safety and efficacy for these uses are not established presented for research and educational use only
On their own, they won't produce dramatic results
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