Penegra 100 mg is a brand of sildenafil citrate manufactured by Zydus Cadila in India—a PDE‑5 inhibitor used to treat erectile dysfunction (ED) and occasionally pulmonary arterial hypertension It works by relaxing blood vessels, increasing blood flow to the penis during sexual stimulation—taking effect If side effects are problematic, consider switching to tadalafil (Tadacip)—longer lasting and often better tolerated.
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