Zhewitra 40 mg is a medication that contains the active ingredient vardenafil. Vardenafil is used to treat erectile dysfunction (ED), a condition where a man has difficulty achieving or maintaining an erection sufficient for sexual activity. It belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors, which work by increasing blood flow to the penis, thus helping a man achieve and sustain an erection when sexually aroused. Zhewitra 40 mg contains 40 milligrams of vardenafil per tablet. The appropriate dosage may vary depending on individual factors, so it's essential to follow your doctor's prescription and guidance. Take Zhewitra 40 mg approximately 30 minutes to 1 hour before sexual activity. It should be taken with a full glass of water and can be taken with or without food. Avoid consuming alcohol or high-fat meals before taking this medication, as they may reduce its effectiveness. Zhewitra 40 mg, like other PDE5 inhibitors, helps improve erectile function when there is sexual arousal. It does not induce sexual arousal on its own. The effects of Zhewitra 40 mg typically last for about 4-6 hours, during which you may find it easier to achieve and maintain an erection. However, the duration of action can vary from person to person.