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**AD-209-1C** is an investigational oral antihypertensive drug product developed by Addpharma for essential hypertension. It was evaluated as a distinct active intervention in Addpharma's completed randomized, double-blind Phase 2 trial NCT05631990, in which it was administered once daily for 8 weeks. Public trial records do not disclose its precise active-ingredient composition, formulation, or molecular mechanism; it should not be conflated with the related but distinct Addpharma product AD-209.
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