Sildenafil vs Viagra: Is Generic Viagra the Same as the Brand?

Below: what the FDA checks before it approves a generic, what can still differ, the same story for Cialis, and the price gap at each program, with dates.

Generic Viagra vs Viagra: what the FDA requires

A generic must match the brand on the things that make it work. The FDA puts it this way: "Generic drugs contain the same active ingredients and must work the same way in the body as the brand drug" (FDA: generic drugs Q&A, read 14 November 2026).

The test behind that is called bioequivalence. The FDA explains it in plain terms: "Bioequivalence generally means the generic drug delivers the same amount of active ingredient to a patient at the same rate and to the same extent as the brand name drug." (FDA)

So a generic sildenafil tablet puts the same drug into your blood, at the same speed, as a Viagra tablet of the same strength. The Viagra label lists the use both share: "VIAGRA is indicated for the treatment of erectile dysfunction." (DailyMed: Viagra label)

What can be different

Some small things may change, and none of them is the drug itself.

• Look. The FDA says it "generally allows minor differences in appearance between generic and brand drugs, such as in color." A generic is often white, not blue.
• Inactive ingredients. Fillers and coatings can differ. The FDA says that "in a minority of patients, inactive ingredients may affect tolerability or absorption."
• Maker. Many companies make generic sildenafil. Your refill may come from a different one. Our list of ED drug brand and generic names matches each brand to its generic.

Both quotes are from the FDA's generic drug questions and answers. If a refill looks or feels different, ask the pharmacist which maker it came from.

Why the brand costs so much more

The FDA gives the reason: "Brand drugs are typically more costly to develop than generic drugs" (FDA). A generic maker does not repeat the large trials. Many makers then compete, and prices fall.

Here is the gap at the programs that publish both. Each figure is the program's own price, read on the date in our records.

With your own prescription, Cost Plus Drugs sells generic sildenafil for cents a tablet. It listed 30 tablets at $6.69, read 31 October 2026, before shipping (Cost Plus Drugs).

Generic Cialis vs Cialis

The same rules apply to tadalafil, the generic of Cialis. It has the same active ingredient and must pass the same bioequivalence test. The Cialis label lists its uses: "CIALIS ® is indicated for the treatment of erectile dysfunction (ED)." (DailyMed: Cialis label)

The Hims row compares the daily plans of each, as Hims lists them on its tadalafil page. Our generic Cialis cost per pill guide lists every tadalafil price we track.

Sildenafil vs Viagra: which is better?

As a drug, neither. They hold the same active ingredient and must reach the blood the same way. The label warnings are the same too. Never take either one with nitrate heart drugs, because blood pressure can drop sharply.

So the choice comes down to price and preference. Most men pick the generic to save money. A few prefer the brand they know, or a pill that looks like the one they took before. Your prescriber can write either.

Revatio is sildenafil too

You may see a lower strength of generic sildenafil sold as the generic of Revatio. Revatio is approved for high blood pressure in the lungs. Its label says "REVATIO contains sildenafil, which is the same medicine found in another medicine called VIAGRA" (DailyMed: Revatio label). The drug is the same. Which strength suits ED is your prescriber's call. Our guide to what sildenafil is covers its uses.

Chews and mints are compounded

Many programs sell chews, mints and dissolving tablets that contain sildenafil. These are compounded, which means a pharmacy mixes them to order. They are not FDA-approved and they are not generics. The FDA says plainly: "Compounded drugs are not FDA-approved." (FDA: compounding Q&A) Our guide to compounded ED medication covers them.

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