Tadalafil, including the dosage found in Vidalista Professional, has a relatively rapid onset of action. It typically starts working within 30 minutes to 1 hour after ingestion, allowing men to experience improved erectile function relatively soon after taking the medication. The effects of tadalafil can last for up to 36 hours, providing a longer window of opportunity for sexual activity. This extended duration of action is one of the key benefits of tadalafil compared to other PDE5 inhibitors, as it allows for increased spontaneity and flexibility in sexual encounters.