Vidalista black is a useful medication for male impotence. Another use for this medication is erectile dysfunction. Tadalafil, an ingredient in this medication, aids in giving men a powerful erection during sexual activity. Vidalista is available for purchase from our store online. After taking the medication for thirty minutes, the medication starts to work. This medication can be taken either before or after food. The medication takes 36 hours to take effect. Follow your doctor's advice when taking this medication.