Zhewitra is a medication primarily used to treat erectile dysfunction (ED) in men. It contains vardenafil as the active ingredient, which is a phosphodiesterase type 5 (PDE5) inhibitor. Vardenafil works by increasing blood flow to the penis during sexual stimulation, helping to achieve and maintain an erection. It does this by inhibiting the enzyme phosphodiesterase type 5, which normally breaks down a substance called cyclic guanosine monophosphate (cGMP). By inhibiting this enzyme, vardenafil helps to prolong the effects of cGMP, leading to increased blood flow to the penis and improved erectile function. https://www.flatmeds.com/product/zhewitra-20-mg/