Generic Sildenafil vs. Brand
Generic drugs have the same therapeutic indications, posology and the same efficacy and safety as the "brand" drug. Zenegra is sildenafil citrate that is identical to that contained in Viagra, but it is not produced by the same company that developed the active substance, hence the referencing to Zenegra as “generic drug”. Let’s take a thorough look at every aspect of generic drugs that concerns their quality, efficacy, safety and legal status.
Here is a little technical glossary for you to understand the basics.
It is the active substance present in every drug, i.e. the product that induces the pharmacological effect. The name of the active ingredient often refers to its chemical characteristics, and is attributed to it at the time of discovery.
It is the invented name that is attributed to the drug by the company that produces it. Often the trade name alludes to the pharmacological activity or chemical-physical characteristics. Products with the same active ingredient may have different trade names, egg the acetyl salicylic (active ingredient) has several trade names: aspirin, bufferin, etc. In case of Viagra, sildenafil (its active component) and Zenegra, Viagra is the commercial name, sildenafil – the active substance, and Zenegra is the trademark name of generically produced sildenafil.
The patent coverage of drugs is the time interval within which the company that patented the drug maintains exclusivity in marketing. This does not exclude that the company that holds the patent cannot sell the production to other pharmaceutical companies for a fee (royalty). The original developer of Viagra still has its patent validity in the U.S., but not anymore in Canada or Europe.
Bioavailability is the capacity that has a pharmaceutical form, to achieve a certain plasma concentration of active ingredient in a given time, which is similar for Viagra and Zenegra.
Cost of generic drugs:
Generic drugs cost at least 20% less than "brand" drugs. This lower cost is due to the fact that these drugs contain active ingredients that are no longer covered by a patent, so the manufacturers of generic drugs only have to bear the costs of production and not research. Zenegra bought online can save you up to 90% of the cost of Viagra bought at a local pharmacy chain.