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A drug is any chemical substance, other than a food or device, that affects the function of living things. Technically, vitamin E, oxygen, and cocaine are all examples of drugs. Various drugs can be used to treat illness, or they can be used recreationally to alter behavior and perception.

The definition is somewhat fuzzy, because many substances which are not typically considered drugs are indeed active substances (ex. caffiene, nicotine, and even chocolate). Additionally, there are thousands of substances in foods and "nutritional supplements" which affect the function of living things. Many illegal and recreational drugs (such as cocaine, opium, and ephedra) could potentially be considered "foods" because they do have caloric content. That being said, the popular definition of a drug is any substance which causes an altered state of mind, caffiene and alcohol excluded. This may or may not include medications, which are strictly used to cure illness and by definition not used for recreation.

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Overview of common drugs prescribed for nausea and vomiting http://t.co/08uVswUa chemotherapy cancer
njmanura (DrManura) Sat, 28 Jan 2012 20:39:24 -0000
Overview of common drugs prescribed for nausea and vomiting http://t.co/08uVswUa chemotherapy cancer
أيام. العلاج الكيميائي لسرطان عنق الرحم Chemotherapy عبارة عن أدوية ( مواد كيميائية ) مضادة للسرطان Anticancer drugs تقوم بتدمير و القضاء٣٦
emurshid (Esam Murshidأبوعماد™) Sat, 28 Jan 2012 19:46:26 -0000
أيام. العلاج الكيميائي لسرطان عنق الرحم Chemotherapy عبارة عن أدوية ( مواد كيميائية ) مضادة للسرطان Anticancer drugs تقوم بتدمير و القضاء٣٦
katie: The Definition of Irony: The chemotherapy drugs that I took last night make my body ache.... http://t.co/XU6nUT2p #slave #service
BDSMblogs (BDSM Blogs) Sat, 28 Jan 2012 17:17:45 -0000
katie: The Definition of Irony: The chemotherapy drugs that I took last night make my body ache.... http://t.co/XU6nUT2p #slave #service
Research and Markets: Journal of Chemotherapy: Original Insights into Antivirals, Immunomodulators, Anticancer Drugs ...
kiantopet (Kiana Topete) Sat, 28 Jan 2012 17:12:01 -0000
Research and Markets: Journal of Chemotherapy: Original Insights into Antivirals, Immunomodulators, Anticancer Drugs ...
today am writing down some of the names of the chemotherapy drugs and what are they used for.
droboman (Ayman Mohamed ) Sat, 28 Jan 2012 11:53:39 -0000
today am writing down some of the names of the chemotherapy drugs and what are they used for.
Cancer Chemotherapy and Biotherapy 5e: Updated to include the newest drugs and those currently in development, C... http://t.co/PqoCcpnF
Hortenciagqq (Hortencia Sepulveda) Sat, 28 Jan 2012 04:46:31 -0000
Cancer Chemotherapy and Biotherapy 5e: Updated to include the newest drugs and those currently in development, C... http://t.co/PqoCcpnF

 
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CancerBACUP: Chemotherapy Drugs - Information about chemotherapy and its effects, including details about individual drugs.
Meta Description: [ An overview of the chemotherapy information section ]

Chemotherapy Drugs - Information on specific cancer chemotherapy medications, from the Cleveland Clinic Foundation.
Meta Description: [ Chemotherapy Drugs - To find the chemotherapy drug that you are taking, click on the appropriate button below to search the list alphabetically by drug name or acronym. The drug name can be either the generic name of the drug OR the trade name. For example, Tylenol is the trade/brand name of acet... ]

What Are the Different Types of Chemotherapy Drugs? - American Cancer Society tells about the different types of drugs used to treat cancer.
Meta Description: [ Chemotherapy drugs are divided into several categories based on how they affect specific chemical substances within cancer cells... ]

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Thalidomide drug used by Nazis (today used as chemotherapy)
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