Kamagra vs Viagra are both medications used to treat erectile dysfunction (ED), and they contain the same active ingredient, sildenafil. However, there are several key differences between the two, primarily related to their brand, price, legality, availability, and potential quality control. Let’s break down these differences in more detail. Viagra is FDA-approved in many countries, including the U.S. This means it has undergone rigorous testing for safety, efficacy, and quality control before being sold in pharmacies.