Sildenafil Citrate is 10-fold more potent for PDE5 than for PDE6 (present in the retina) and more than 700-fold more potent for PDE5 than for PDE11, whereas Vardenafil is 15-fold more potent for PDE5 than for PDE6 and more than 300-fold more potent for PDE5 than for PDE11. For people above the age of 65 years, initial dose of Sildenafil Citrate is 25mg whereas it is 5mg in case of Vardenafil.In case of renal insufficiency, Sildenafil Citrate dose can be decreased to 25mg, but the adjustment can not be recommended when one takes Vardenafil. High-fat meals with medicines like Kamagra,Levitra, Edegra and Sildenafil Citrate decrease maximum plasma concentration by 29% and delay time to maximum plasma concentration by 60 minutes. Whereas high-fat meals with Vardenafil decrease maximum plasma concentration by 18% to 50%, so it can be taken with or without food. |