Sildenafil Citrate is one of the popular drugs for the treatment of erectile dysfunction. Sildenafil Citrate was developed in the scientific research laboratory of the pharmaceutical company Pfizer and for the first time it has come into the market under the brand name Viagra.
Sildenafil Citrate has become the first medication for erectile dysfunction treatment, approved by the FDA but nowadays, company Pfizer has lost exclusive rights for its production. In 2010, validity period of patent for the invention of active substance Sildenafil Citrate expired, although Pfizer still remains the only right holder of brand name Viagra.
Several pharmaceutical companies have taken an advantage of expiration of patent term and at once have started to produce the active substance Sildenafil Citrate which in different world countries is sold under different trademarks.
Sildenafil Citrate is the main active substance of brand Viagra, so all the medicines, produced on its basis are pharmacological analogs (generics) of Viagra. Pharmacological properties of generic Viagra are identical to pharmacological properties of brand Viagra (Pfizer) but only under certain condition. Amount of active substance Sildenafil Citrate in generic Viagra should correspond to the amount of Sildenafil Citrate in brand Viagra, although they can have different additional components.
Buying Viagra generics, it is necessary to pay attention to the amount of active substance Sildenafil Citrate is contained in 1 dose. In accordance with the international standards of drugs labeling and biological medicines, amount of active substance Viagra should be indicated in milligrams on the branded packing of generic Viagra.
Viagra generics are several times cheaper than brand Viagra, since manufacturers of Viagra generics did not invest hundreds millions of dollars in the invention of active substance Sildenafil Citrate and did not use scientific potential of their research centers in the invention of Sildenafil Citrate. Using the existing molecular formula of active substance Sildenafil Citrate (developed by the company Pfizer), manufacturers of Viagra generics managed to optimize the financial costs and significantly to reduce prime cost of generic Viagra.
Despite the fact that Viagra generics are 2-3 times cheaper than brand Viagra (Pfizer), it is quite problematically to buy Viagra generics at city pharmacies. Large pharmacy networks consciously limit buyers in the right of choice, since it is much more advantageous to derive profit from selling of expensive brand Viagra.
There are dozens of Viagra generics, at online pharmacies can be sold under trademarks: Revatio, Novigra, Viprogra, Eroton, Aurogra, Dzhenagra, Eriacta, Konegra, Silagra, Penigra, Sildigra, Penimex, Zenegra, Sidigra, Genagra, Kamagra, Viagra Super Active.
All these medications are produced on the basis of active substance Sildenafil Citrate, so they possess the same indications / contraindications / side effects and are taken in the similar dosage.
Unlike brand Viagra (Pfizer), Viagra generics are produced not only in the form of tablets but also in the form of capsules for oral use. Viagra Super Active is one of those Viagra generics which is produced in the capsules, providing the restoration of erection for just 15-20 minutes after intake.
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