Avana 100 mg contains Avanafil, a PDE5 inhibitor used to treat erectile dysfunction (ED). Like other PDE5 inhibitors, it works by relaxing the blood vessels in the ***** to allow better blood flow during ***** activity. However, Avana 100 mg can interact with several medications, leading to potential side effects or reduced effectiveness. Let’s break down when it’s most likely to interact: Key Drug Interactions: Nitrates (e.g., Nitroglycerin, Isosorbide): Interaction: Dangerous drop in blood pressure. Why: Both Avanafil and nitrates lower blood pressure, so taking them together can cause a severe drop in blood pressure, leading to dizziness, fainting, or even heart attack or stroke. Caution: Never use Avanafil with any form of nitrate. Alpha-blockers (e.g., Tamsulosin, Doxazosin): Interaction: Potential for low blood pressure. Why: Alpha-blockers relax blood vessels to treat high blood pressure or prostate problems, and combining them with Avanafil may enhance this effect, causing dizziness or fainting. Caution: If you must take both, your doctor may adjust the doses and monitor your blood pressure closely. Antifungals (e.g., Ketoconazole, Itraconazole): Interaction: Increased blood levels of Avanafil. Why: Antifungals can slow down how Avanafil is broken down in the liver, leading to higher levels in your blood and potentially increasing the risk of side effects. Caution: Your doctor may adjust the dose of Avanafil if you take these medications.