Vidalista 40 mg may benefit men with erectile dysfunction. A man can be affected at an early age as well as when he is older. Additionally, Vidalista 40 mg induces erections that last up to four hours and is a potent medication used by men who need erections. Online pharmacies and local pharmacies both sell Vidalista. When taking Vidalista 40 once a day, you should also drink a full glass of water. No matter when you take it, it doesn't matter if you take it before or after meals. The instructions you receive from your doctor will be specific to your case. Thus, erections are possible due to improved blood flow in the penile arteries.