Penegra 100 mg is a medication commonly used to treat erectile dysfunction (ED) in men. It belongs to a class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors, which work by increasing blood flow to the penis during sexual stimulation. In this article, we will take a closer look at Penegra 100 mg, exploring how it works, its mechanism of action, and potential side effects. So, let's dive in and learn more about this medication that has helped countless men regain their confidence and sexual satisfaction. Penegra 100 mg is an oral medication that contains sildenafil citrate as its active ingredient. Sildenafil citrate is a well-known PDE5 inhibitor that was first introduced with the brand name Viagra. Penegra is a generic version of Viagra and is equally effective in treating ED. It comes in the form of blue diamond-shaped tablets, and each tablet contains 100 mg of sildenafil citrate.