U.S., Sept. 18 -- ClinicalTrials.gov registry received information related to the study (NCT07824674) titled 'The Effect of Additive On-Demand Sildenafil vs. Dextrose Candy on Maximum Exercise Capacity in Pulmonary Arterial Hypertension' on Aug. 17.

Brief Summary: The goal of this clinical study is to investigate whether the additional intake of sildenafil 20mg on top of standard medical treatment results in a benefit on maximum exercise workload (Wmax) in patients with pulmonary arterial hypertension (PAH).

Study Start Date: Sept., 2026

Study Type: INTERVENTIONAL

Condition: Pulmonary Arterial Hypertension (PAH) (WHO Group 1 PH)

Intervention: DRUG: Dextrose

Administration of Dextrose Candy by mouth as a tablet.

DRUG: Sildenafil 20m...