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The Potential Risk Involved in Bringing a New Pharmaceutical Drug to the Market

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Submitted By alicepeach
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The potential risk involved in bringing a new pharmaceutical drug to the market is huge. The actual timescale of the project is longer then a decade, and the success rate is around 1 in a 1000. In fact for every 1000 compounds that are produced only around 30 of these show any sort of promising result. Therefore introducing a new drug into the market does not simply involved one idea and one compound but in fact a complexed process of trial and error so to speak. After years of research on difference compounds have taken place the company can then progress to a stage know as the ‘preclinical stage’. This is where animals are tested upon and it is also the initial stage in the labs. The time scale varies from 3 and a half to four years and the main aim of this stage is to look at the biological activity of the compound and also to evaluate its safety. After the animal testing has been completed they company are not allowed to start testing on humans until their investigational new drug application (IND) has been approved. The company have to file a IND with the FDA, they do so to gain approval to start the next stage, which is on humans. The FDA has 30 days to disapprove. The investigation carried out looks at previous experiments and also information on the new study being evaluated i.e. how is conducting the study, where it is taking place etc. They also look at the chemical structure of the new drug and what its new purpose will be in the market.
The next stage of testing is able to begin is the IND is not DISPROVEN within 30days.
The next stage is simply know has phase I and requires around 20 to 30 healthy volunteers. This is the shortest stage and takes about a year to conduct. The purpose of this stage is to identify the metabolic and pharmaceutical effects of the drug on humans and also to look at the safety of the drug on humans and the safe dosage range

Phase II is more of a specific stage as it tests people who already have the disease, this is to test the drugs productiveness. It requires around 200-300 volunteers and generally takes around two years the stage to be complete.

The third stage phase III takes on average 3 years to conduct and requires a substantially larger number of volunteers. In fact it normally tests on 1000 to 3000 patients. The aim of this stage is to make sure there are no unfavorable reactions.

Unfortunately for the drug companies involved, after the third phase they do not they the right to sell their new pharmaceutical drug straight away. Similar to the IND they have to apply for a ‘New Drug Application’. The work carried out over the past years’ has to the critically analysed by the FDA again. The FDA has more time by law this time to review the new drug application. A new drug application in incredibility on average around 10,000 pages or more and looks at the safety and effectiveness of the drug in question.

Once the drug has been approved then the drug becomes available for physicians to prescribe.

This is not the end of the research and development stages, there is also a final stage called phase IV and is known as the ‘post market surveillance stage’ it is in place to ensure the drug continues to have positive effects on its patients and if anything negative occurs then an immediate investigation will take place and then drug will be taken off the market.

Breaking the stages downs allows you to understand the full potential risk involved and why continuous research and developments in required to in sure that one drug is successful and becomes available to the pharmaceutical market, making up for all the previous cost incurred, and future one’s to come.

Only one tiny hiccup is needed and the testing of the drug will be closed down. At phase I on average around 70% of drugs will actually successfully complete the first phase. At phase II 33% of the starting figure will complete the second stage and only around 25 will pass phase III.As well as failing at the clinical trials stages they also have a chance that after all testing is complete they will not be approved by the FDA.

Hence why the price of these drugs are costly and patents are in place to ensure generic company do not take the formula and create a cheaper version of the same drug. Even though the risk in developing a new drug into the pharmaceutical market the rewards are even greater when they have been achieved.

References

http://www.pharmainfo.net/reviews/drug-development-process-review

http://www.pacificbiolabs.com/drug_stages.asp

http://www.gmp.asso.fr/Documents/Biblio/Risks%20in%20new%20drug%20development.pdf

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