Vilitra 20 facilitates circulation by relaxing blood vessels. Vilitra side effects include headache, nausea, vertigo, blurred vision, and more. The consequences could get severe or linger a long period. Vilitra can be taken as prescribed by your doctor, either with or without meals. Although taking the pill 30 to 60 minutes prior to sexual activity is advised, you can take it up to 4 hours beforehand. You must be sexually excited in order for this medication to help you get and sustain an erection. Vilitra is not advised for use by women or small children and is exclusively for men. Vilitra is not advised for those who have renal or cardiac issues.