Vidalista 20 increases sensitivity to sexual stimulation and allows men with erectile dysfunction to experience an erection during sexual excitement. The drug works by relaxing the blood vessels in the penis, increasing blood flow to the area and triggering nitric oxide production. This increased sensitivity can last up to 24 hours. It is important to take the drug 30 minutes before sexual activity to maximize its effect. This oral medication requires a doctor’s prescription to be used safely. It should not be combined with nitrates, as it can cause hypotension. It is also important to tell your doctor about any previous ED problems you’ve had.