Aviptadil Acetate, the acetate salt of Vasoactive Intestinal Peptide (VIP), is a research compound that promotes pulmonary vasodilation while suppressing vascular smooth muscle cell proliferation and platelet aggregation. Its applications include experimental studies in pulmonary arterial hypertension (PAH), pulmonary fibrosis, and respiratory distress, such as that associated with SARS-CoV-2 infection.