What does Viagra tablet do?

AI Overview

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Viagra is a prescription tablet containing sildenafil that treats erectile dysfunction by relaxing blood vessels and improving blood flow to the penis. It requires sexual arousal to work, takes effect in 30 to 60 minutes, and lasts for up to 4 hours. 

Healthline

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How Viagra Works

Relaxes blood vessels: It opens up blood pathways in the body.

Boosts blood flow: More blood flows into the penis during sexual excitement.

Needs arousal: It does not cause an automatic erection; you must feel sexually excited. 

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·Medical Centric Podcast

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Usage and Timing

When to take: Usually taken 30 to 60 minutes before sexual activity.

Duration: Effects can last up to 4 hours.

Limit: Never take more than one tablet in a single day.

Food effect: Heavy or high-fat meals can make the medicine work more slowly.