The rights to the brand name Viagra, the first serious drug for erectile dysfunction on the market, belong to its developer, Pfizer. The active substance is Sildenafil citrate. Since 2017, this medicine is also available under non-proprietary trade names.
Viagra patent restrictions ended in most countries in 2020. But Pfizer began making and selling generic Sildenafil in 2017 through its Greenstone subsidiary. And after 2020, many global manufacturers of pharmaceuticals joined it.
As of 2022, the following companies produce Sildenafil generics:
- Teva Pharmaceuticals;
- Fareva Amboise;
- Bristol Labs, etc.
Viagra comes in the form of a blue pill; generics are usually white.
Sildenafil is available as 20 mg, 25 mg, 50 mg, and 100 mg tablets and in liquid and gel forms.
Doctors often prescribe Sildenafil at a dose of 50 mg. It is especially suitable for those men who use this medicine for the first time. According to studies, this dose is effective for 74% of men.
However, if it doesn’t help you, the doctor may increase the dose to 100 mg. (It is the maximum dose).
You should take a 100 mg tablet precisely the same as other doses: no more than once a day, about an hour before sex and on an empty stomach. 100 mg and 50 mg tablets didn’t have much difference in clinical trials: the higher dose had the effectiveness of 82% as compared to 74% for the 50 mg dose and 25% for the placebo.
The generic Sildenafil 100 mg doesn’t last longer than the 50 mg dose. But as a rule, the results are stronger. However, it means that side effects can be more severe.
As a result of the undeniable success of Viagra, first, the patent holder himself and then other pharmaceutical companies began to produce its generics.
It has led to the fact that the consumer has a choice. However, you should buy Sildenafil generics only in reliable pharmacies (including online) since this medicine is one of the most counterfeited in the world.