Vilitra 40 should be taken orally with a glass of water, approximately 30 to 60 minutes before anticipated sexual activity. Avoid taking more than one dose in a 24-hour period to reduce the risk of side effects and overdose. Vilitra 40 contains 40 mg of vardenafil, which is a moderate-to-high dosage strength. The recommended dosage may vary depending on individual response, health status, and other factors. It's important to follow your doctor's instructions regarding dosage and usage.