Zhewitra 10 mg contains vardenafil, which is a medication used to treat erectile dysfunction (ED), just like Filitra and Viagra. It works by improving blood flow to the ***** when *****ly aroused, making it easier to get and maintain an erection. However, there are certain medications that should not be taken with Zhewitra (vardenafil) due to the potential for dangerous interactions. Here are the main groups of medications to avoid: 1. Nitrates (e.g., Nitroglycerin, Isosorbide) Why to avoid: Both Zhewitra and nitrates lower blood pressure. When combined, this can cause a dangerous drop in blood pressure, which can lead to dizziness, fainting, or even a heart attack in extreme cases. Common nitrate medications include those used for chest pain or angina. 2. Alpha-blockers (e.g., Doxazosin, Tamsulosin) Why to avoid: These are often prescribed for high blood pressure or benign prostatic hyperplasia (BPH). Like vardenafil, alpha-blockers also lower blood pressure, and when taken together, they can cause significant drops in blood pressure, dizziness, fainting, and lightheadedness. Important note: If you must take both, your doctor might adjust the timing and dosage to avoid interactions.