Drug classification
Why drugs are classified in the categories they are
Drugs are majorly classified into various categories, either pharmacological or therapeutic applications. They can be classified based on mechanism of action, physiological effects, and chemical structuring. The classification of drugs into categories aims to ensure that the right medications are used for the right health conditions at the right dosage. The classification helps determine expected drug side effects and avoid drug-drug interactions. Therefore, the classification ensures drug safety and efficiency when administered.
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Description of the actions of drugs in each category.
The action of drugs based on the category on the body can be through physical action for medications such as laxatives, chemical action on neurotransmitters such as agonists, enzymatic action such as mineralocorticoids, and through transport mechanism action in which the drug action affects how permeable cell membranes are such as ion channel blockers.
Chemotherapy and diseases treated using it
Chemotherapy is a type of treatment used to kill body cells growing faster than normal by using toxic drugs (Wei et al., 2021). Chemotherapy is majorly used in treating cancer or easing cancer as cancer involves fast cell growth and multiplication, leading to the development of the disease.
Examples of how contrast media are used to produce an image.
There are various ways in which contrast media can be used in radiography. For example, contrast media can be injected intravenously around the area of focus to produce clear images (Kodzwa, 2019). Another use for contrast media is when health professionals want to identify the precise location of certain body parts, such as tiny blood vessels or tumours.
Comparison of ionic and non-ionic contrast media.
Ionic and non-ionic contrast media differ majorly in their solubility in a solvent and ionic charge after dissolution. In this case, ionic contrast media dissolve into charged particles once placed in a solvent. On the other hand, non-ionic contrast media does not dissolve into charged ions when added to a solvent.
References
Kodzwa, R. (2019). ACR Manual on Contrast Media: 2018 Updates. Radiologic Technology, 91(1), 97–100. http://www.radiologictechnology.org/content/91/1/97.full
Wei, G., Wang, Y., Yang, G., Wang, Y., & Ju, R. (2021). Recent progress in nanomedicine for enhanced cancer chemotherapy. Theranostics, 11(13), 6370. https://doi.org/10.7150/THNO.57828
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Question 
Assessment Description
Homework is to be presented as a short (50-100-word) paragraph response for each question. The assignment is to be submitted to the instructor as an electronic Microsoft Word document.
Why are drugs classified in the categories they are?
Drug classification
Give a description of the actions of drugs in each category.
What is chemotherapy, and which diseases are treated this way?
Give examples of how contrast media are used to produce an image.
Compare ionic and non-ionic contrast media.
APA format is not required, but solid academic writing is expected.
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