Penegra 100 Mg is a medication used to treat erectile dysfunction (ED) in men. While it is an effective treatment for ED, it is important to understand how it interacts with other medications. Drug interactions can have serious consequences, including decreased effectiveness of the medication or increased risk of side effects. In this article, we will explore the topic of drug interactions with Penegra 100 Mg and other medications, and provide tips on how to prevent and manage these interactions. Penegra 100 Mg is a medication that belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors. It works by relaxing the blood vessels, allowing for increased blood flow and thus an erection. It is typically taken orally, about an hour before activity.