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.
Crossover RCT n=30: no HR change but reduced symptom score. Risk of hyponatremia/nocturia. Limited role for select POTS.