Zenegra 100 mg is a high-strength sildenafil tablet used for treating erectile dysfunction when lower doses are not effective. It improves erection quality by increasing blood flow during sexual stimulation but should be used carefully under medical supervision. Common side effects include headache, flushing, dizziness, nasal congestion, and stomach upset. Because it is a higher dose, these effects may be more noticeable. It should not be taken with nitrate medications or certain heart drugs due to the risk of a dangerous drop in blood pressure. Alcohol may also increase side effects. https://www.genericday.com/zenegra-100-mg.html