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Anaphylaxis following B12 injection has been documented in medical literature, particularly in patients with sensitivity to cobalt or cobalamin compounds
The FDA has expressed concerns about compounded peptides, particularly those that have not been approved for any medical use
Run too fast, NAD+ causes chest tightness, flushing, nausea, and a hot burning sensation
One missed day has no meaningful impact on a 3-month cycle
The right choice depends on deficiency cause, route preference, tolerability, availability, and monitoring needs
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