==Introduction==
[[Image:Drug metabolism1.jpg|right|300 px|Drug metabolism]]
Drug metabolism is a detoxification function the human body possesses to defend itself from environment hostility.
Ideally, a drug should reach the site of action intact, cure the disease, and leave the body after it completes its mission.
*To elucidate the function and fate of the drug
*To manipulate the metabolic process of a potential drug.
[[Image:Drug metabolism1.jpg|right|300 px|Drug metabolism]]
==Metabolism Sites==