Vidalista 20mg can help men with erectile dysfunction. The medication should be stored at room temperature in a closed container away from direct sunlight, heat, and moisture. Tadalafil treats male erectile dysfunction. It is a phosphodiesterase 5 inhibitor. These medicines inhibit phosphodiesterase type-5 from operating too quickly. The penis is one of the locations where this enzyme is active. This medicine usually treats erectile dysfunction within 30-60 minutes of using it. Common Vidalista 20mg side effects include flushing, upset stomach, headache, and dizziness. Although its effectiveness often declines after two hours, it can operate for up to 36 hours.