Evidence Summary
Evidence Level: Anecdotal
Mechanism: Not specified
Safety: Limited specific safety data in these populations. Review full prescribing information and consult specialist. Many agents used off-label or investigational.
Dosing: See linked studies/trials for reported doses and durations; typical protocols vary widely.
Depletion data + superior plasma arginine raising vs arginine alone. No dedicated PASC RCT. 3-6g/day studied in other contexts. May support nitric oxide / vascular function. Low risk OTC option for POTS/vascular phenotypes.