The active component of the combination medication Vidalista 40 mg is tadalafil. It helps treat erectile dysfunction by increasing blood flow to the male sexual organ, the penis. It should be taken 30 to 60 minutes before having sex. You should only take this tablet once per 24 hours. Patients who have had a heart attack or stroke within the last six months should not take this medication. They should not be accessible to pets or children. Never use past-due medications. Keep it away from moisture, dampness, and light. After intake, it normally starts to work, though individual outcomes may vary.