Tadalafil is the primary component of Vidalista 40, a medication used to treat male erectile dysfunction. It helps achieve an erection during intercourse by increasing blood flow in the penis. Although tadalafil aids in achieving and sustaining an erection, it cannot create one on its own without sexual stimulation. If you have recently taken nitrates (medicines for angina or chest discomfort), avoid using tadalafil. It takes effect 30 to 60 minutes after taking it, and its effects are gradual. We advise taking the medication after a meal for optimal results. It may take a lot longer to start working if you take it with food or right after eating.