Sildenafil vs Viagra: A Complete Comparison Guide

Sildenafil vs Viagra: A Complete Comparison Guide

Table of Contents

When it comes to treating erectile dysfunction (ED), Sildenafil and Viagra are two of the most commonly discussed options. But what exactly is the difference between them?

The Active Ingredient

Both Sildenafil and Viagra contain the same active ingredient: sildenafil citrate. Viagra was the original branded version developed by Pfizer, while generic Sildenafil became available after the patent expired.

Effectiveness

Clinical studies have consistently shown that generic Sildenafil is bioequivalent to Viagra, meaning it works in the same way and produces the same therapeutic effects.

Price Comparison

The most significant difference lies in the price. Generic Sildenafil is typically 80-90% cheaper than branded Viagra, making it a more accessible option for many patients.

Dr. Sarah Mitchell

Written by:

Dr. Sarah Mitchell

Lead Medical Reviewer

Last updated: 15 Mar 2026

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