Sildenafil is a selective phosphodiesterase type 5 (PDE5) inhibitor extensively studied in preclinical models for its vascular and smooth muscle–relaxing properties. By inhibiting PDE5, sildenafil prevents the breakdown of cyclic guanosine monophosphate (cGMP), thereby enhancing nitric oxide–mediated vasodilation. Animal and in vitro research explores its effects on pulmonary, coronary, and systemic vascular beds, as well as its role in modulating platelet aggregation, endothelial function, and myocardial performance. Mechanistic studies also investigate its selectivity profile against other PDE isoforms and potential effects on oxidative stress and mitochondrial signaling in cardiovascular tissues.

Peptides are available for research purposes only.
Please review and adhere to our Terms and Conditions before ordering.