According FDA (U.S. Food and Drug administration, to gain FDA approval, a generic drug must: contain the same active ingredients as the brand name drug (inactive ingredients may differ), be identical in potency, dosage form and route of administration; comply with the same batch requirements for identity, potency, purity and quality; be manufactured under the same rigid standards of FDA’s good manufacturing practice regulations mandatory for branded medications. To put it differently, their pharmacological effects are identical to those of their brand name counterparts.
A lot of people express doubts about the efficacy of generic drugs, as the latter are often substantially cheaper than branded versions. They wonder if the quality and potency have been changed to make less expensive products. Generic drugs are compulsory to be as safe and efficient as branded drugs.
Actually, generic drugs are cheaper, as the producers do not have to spend money on developing and marketing of a new medication. When a company introduces a new drug to the pharmaceutical market, the business has already spent a considerable amount of money on research, development, marketing and promotion of the medication. The manufacturer that develops the drug is given a patent – an exclusive right to sell the medication as long as the patent is valid. As the patent nears expiration, manufacturers can apply to the FDA for permission to produce and sell generic versions of the medication. Without the startup expenses on manufacturing of the drug, manufacturers can afford to produce and sell it cheaper. When several companies start producing and selling a drug, the competition among them can also result in a lower price.
The standards for all medication manufacturing facilities are the same, and a great many firms make both branded and generic medications. In fact, half of generic medication manufacture is made by branded producers.
Sometimes, generic versions of a medication have different colors, flavors, or combinations of inactive ingredients in comparison to original medications. Trademark laws in the USA do not allow generic drugs to look exactly like branded drugs. Yet, active ingredients in boht preparations must be the same, securing that both have the same pharmacological properties.

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