Vidalista 40 is known for its long duration of action, with effects lasting up to 36 hours. This extended window of efficacy allows for greater flexibility in sexual activity and spontaneity, as it does not need to be taken immediately before sexual activity. The recommended dosage of Vidalista 40 will depend on individual factors such as the severity of ED and response to treatment. It should be taken orally with a full glass of water, approximately 30 minutes to 1 hour before anticipated sexual activity. It's important to follow the dosage instructions provided by a healthcare provider.