Vidalista 20 mg is a prescription medicine used to treat male erectile dysfunction. It works by increasing penile blood flow. To avoid any unwanted interactions, do not combine it with grapefruit juice. Combining this medicine with food is not recommended because it may hinder the absorption process and result in a delayed erection. Avoid alcohol consumption before taking Vidalista 20 mg. Furthermore, it is not recommended to take medicine to stimulate an erection that has been suppressed by excessive alcohol consumption.  Although it must be taken at least 30-60 minutes before sexual activity, it is extremely effective.