Malegra Pro 100 mg is a medication used to treat erectile dysfunction (ED) in men. It contains the active ingredient sildenafil citrate, which belongs to a class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. Sildenafil citrate is the active ingredient in Malegra Pro 100 mg. It works by inhibiting the enzyme phosphodiesterase type 5, leading to increased blood flow to the penis during sexual stimulation. This enhanced blood flow helps in achieving and maintaining an erection. Sildenafil has a duration of action of approximately 4 to 6 hours. During this time, individuals may find it easier to achieve and sustain an erection in response to sexual stimulation. Malegra Pro 100 mg is a prescription medication, and it should be used under the guidance of a healthcare provider. A healthcare professional will assess your health history, potential interactions with other medications, and any contraindications before prescribing it.