Penegra 50 mg can cause headaches. Its active ingredient, sildenafil citrate, works by relaxing blood vessels to increase blood flow to the penis. This vasodilation can also affect blood vessels in the brain, leading to mild to moderate headaches in some users. Key Points: Common Penegra 50 mg Headache is one of the most frequently reported side effects of Penegra. Duration: Usually mild and temporary, lasting a few hours after taking the medication. Management: Drinking water, resting, or mild pain relievers like paracetamol can help. Serious Cases: Severe, persistent headaches are rare but should prompt consultation with a doctor, as they may indicate other health issues or interactions with medications like nitrates. Most users tolerate Penegra 50 mg well, and headaches are usually manageable and not dangerous.