Vardena Vardenafil Ritonavir
ModerateRitonavir is a CYP3A4 inhibitor, in the same group as ketoconazole, indinavir and erythromycin. Medicines in this group may slow down the way your body gets rid of Valenty (vardenafil). So if you take ritonavir with it, Valenty may stay in your body longer than usual.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.