Suhagra 100 mg works by inhibiting the enzyme PDE5, which regulates blood flow in the penis. By blocking PDE5, sildenafil helps to increase blood flow, which allows for an erection when the individual is sexually aroused. It is typically taken orally, with or without food, about 30 minutes to 1 hour before sexual activity. The effects usually last for about 4 to 5 hours.

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