The inhibition of cyclic nucleotide Phosphodiesterase type 5---Mirodenafil

Mirodenafil (SK3530) is an orally active, highly potent and selective phosphodiesterase-5 (PDE5) inhibitor (IC50 = 338 pM). with therapeutic efficacy in various ED models in vivo. Comparing to sildenafil, mirodenafil shows ~10-times higher PDE5 selectivity in vitro and remains longer in the plasma and corpus cavernosum following oral dosing at 40 mg/kg in rats in vivo.

The inhibition of cyclic nucleotide Phosphodiesterase type 5 (PDE5) has been clinically validated as an effective treatment for erectile dysfunction. One of them is mirodenafil (formerly known as SK-3530) approved only in Korea. This drug was developed by SK Chemicals and marketed under the trade name Mvix.

Mirodenafil has been used in trials studying the treatment and supportive care of Kidney Diseases, Urologic Diseases, Renal Insufficiency, Erectile Dysfunction, and Male Erectile Dysfunction.

In vitro

The pharmacoki-netics of mirodenafil were not significantly altered by this concurrent administration. Mirodenafil (50 or 100 mg), obviously improved erectile function and was well tolerated in a representative population of Korean men with broad-spectrum ED of various etiologies and severities. Mirodenafil administered with alcohol had a tolerability profile comparable to that of mirodenafil alone. The concurrent administration of mirodenafil with alcohol was not associated with clinically significant hemodynamic changes in these healthy male volunteers in Korea. The coadministration of ketoconazole and rifampicin resulted in significant changes in systemic exposure to mirodenafil, in these healthy Korean male volunteers.

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