Vidalista 20 It treats erectile dysfunction or ED. Your doctor may also prescribe it for you if you have signs and symptoms of BPH. While this is useful for men, women cannot reap the benefits.The components of Vidalista 20 mg or generic Tadalafil stay in your body for more than 48 hours. They may last longer if you have kidney or liver problems. You should stop all s*xual activity if you experience chest pain, or dizziness after taking this medicine.