The active ingredient in Valif Oral Jelly 20 mg, Vardenafil, functions by inhibiting the phosphodiesterase type 5 (PDE5) enzyme. PDE5 breaks down cGMP (cyclic guanosine monophosphate), a molecule that relaxes blood vessels and allows more blood to flow into the penis during sexual arousal. By inhibiting PDE5, Vardenafil helps maintain higher levels of cGMP, promoting blood flow to the penis and facilitating an erection when sexually aroused.
https://www.genericday.com/val....if-oral-jelly-20-mg.
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