Answer:
How Drugs are Studied Thesis
Statement: Developing a drug undergoes years of theoretical stages before moving it to the pharmacy shelf.
I.First, scientists target a step in the disease process.
A. They manufacture compounds from viruses and fungi and test them in laboratory.
B. They analyze the structure to enhance the outcome.
II. The next step is testing the drugs on animals.
A. The scientists closely study the drug's effect on the organs of animals. B. Researchers examine at least two animals to differentiate the effects.
Ill. There are four phases of clinical trials for humans after the drug is found effective on animals.
A. Phase I trials test a drug in small groups of healthy volunteers.
1.The tests are done to ascertain the safe dosage.
2. These trials last for six months to one year
B. Phase II trials test several hundred volunteers,
1. These studies evaluate the safety, side effects and optimal does.
2. These trials also last for six months to one year.
C. Phase III trials test thousands of volunteers for several years.
1.These studies compare the drug under investigation with a control.
2. These trials are typically blind studies or double-blind studies.
D. Phase IV trials are done after a drug is approved and on the market.
1 These trials investigate long-term effects
2. These trials also investigate the use of the medication for a different condition.
Explanation:
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