Malegra belongs to a class of medications known as phosphodiesterase type 5 (PDE5) inhibitors. It works by inhibiting the enzyme PDE5, thereby increasing blood flow to the penis during sexual stimulation, leading to improved erectile function. Originally developed for the treatment of ED, Malegra has also found utility in managing PAH due to its vasodilators effects. The dosage should not exceed one tablet per day, and adjustments may be necessary for individuals with hepatic or renal impairment. It's essential to follow the prescribing physician's instructions carefully to achieve optimal results while minimizing the risk of adverse effects.

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