A prescription drug called Vidalista Black 80 mg is used to treat erectile dysfunction, also referred to as male impotence. It functions by boosting blood flow to the penis, which facilitates easier erections. This medication is administered orally and should be taken as needed, usually half an hour before engaging in sexual activity. You can take this medication with or without food, and it will work for up to six hours. Patients with allergies or pre-existing medical issues should disclose them to their doctor.