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He pointed out that a single dose in November 2024 would not be active in a marathon run in April 2026

Other candidates include people who've experienced nerve damage from nitrous oxide exposure (sometimes called "laughing gas neuropathy") and those battling unexplained fatigue or neurological symptoms that haven't responded to other treatments

Tetracycline and amoxicillin combined with BPC-157 caused premature vomiting and expulsion in animal models, though the relevance to human use remains unclear

Some researchers also track NAD+ metabolite levels via urinary nicotinamide excretion to confirm functional NNMT inhibition, though this is not standard practice

Reproducibility, audited