Kamagra and Viagra are both medications used to treat erectile dysfunction (ED), but they differ in several ways:

Active Ingredient:

Viagra: Contains sildenafil citrate as its active ingredient.
Kamagra: Also contains sildenafil citrate, but it's typically marketed as a generic or unlicensed version of Viagra.
Brand vs. Generic:

Viagra: It is the brand name for sildenafil citrate and is manufactured by Pfizer.
Kamagra: This is usually a generic version and often produced by various manufacturers, mostly in India. It is not licensed in some countries, which means its production and sale may not be regulated as strictly as Viagra.
Regulation and Approval:

Viagra: Approved by regulatory agencies like the FDA (U.S. Food and Drug Administration) and is legally marketed in many countries with strict quality controls.
Kamagra: Often sold as an unregulated product. Kamagra legal status and approval vary by country, and it may not meet the same quality and safety standards as Viagra.
Price:

Viagra: Generally more expensive, partly due to its brand status and the costs associated with its development and marketing.
Kamagra: Usually less expensive, which can be appealing, but this can come with risks related to quality and safety.
Availability:

Viagra: Available through licensed pharmacies and requires a prescription in most places.
Kamagra: Often sold online without a prescription, which can be risky as the quality and authenticity of the product might be questionable.
Formulation and Dosage:

Viagra: Comes in several dosages (25 mg, 50 mg, 100 mg) and forms (tablets, oral jelly).
Kamagra: Available in various forms, including tablets and oral jelly, with different dosages. The exact formulations can vary depending on the manufacturer.
Safety and Efficacy:

Viagra: Proven effective and safe through extensive clinical trials and long-term use.
Kamagra: While it contains the same active ingredient (sildenafil citrate), the lack of regulation can lead to variations in effectiveness and safety.
If you're considering these medications, it's important to consult a healthcare professional to ensure you're using a product that's safe and effective for you.