Malegra 25 mg contains Sildenafil Citrate, a PDE5 inhibitor used for erectile dysfunction (ED). Sildenafil works by relaxing blood vessels to improve blood flow to the *****. This blood vessel relaxation doesn’t happen only in the *****—it can also occur in nasal passages, causing the tiny blood vessels in the nose to dilate. The result is stuffy or congested nasal passages, often accompanied by flushing, headache, or mild dizziness. Characteristics Usually mild and temporary, lasting a few hours. More likely if the dose is higher or if the person is sensitive to Sildenafil. Often occurs along with other common side effects like headache, facial flushing, or indigestion. Management Simple remedies like steam inhalation, saline nasal sprays, or staying hydrated can help relieve congestion. Avoid combining with other decongestants unless approved by a doctor, as some may interact with blood pressure. If nasal congestion is severe, persistent, or accompanied by breathing difficulty, seek medical attention. Nasal congestion is a common, mild, and temporary side effect of Malegra 25 mg due to its action on blood vessels in the nose. It is usually not dangerous. If you want, I can make a full list of common and rare side effects of Malegra 25 mg so you know what to expect.