Vigora is a generic medication prescribed for the treatment of erectile dysfunction (ED), containing sildenafil citrate as its active ingredient. As a phosphodiesterase type 5 (PDE5) inhibitor, it works by enhancing the body's natural erectile response to sexual stimulation. The medication facilitates an erection by increasing blood flow to the penis but does not cause an erection without sexual arousal. Vigora is typically taken orally 30 to 60 minutes before anticipated sexual activity, with its therapeutic effects lasting for approximately 4 to 6 hours. Common side effects include headache, facial flushing, indigestion, and nasal congestion. It is critically important to note that Vigora is absolutely contraindicated for use with any form of nitrate medication, as this combination can cause a severe and potentially life-threatening drop in blood pressure. Therefore, a comprehensive medical evaluation is essential to ensure it is a safe and appropriate treatment option for an individual.