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Components of Pharmacology

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Components of Pharmacology
Stacy Maryland
Liberty University Online

Pharmacology Pharmacology is the study of drugs; manmade, organic, or endogenous, and their application and physiological effect(s) most specifically on the central nervous system (CNS). The Doweiko text succinctly describes a pharmaceutical as that which is responsible for, “changing the biological functions of target cells through chemical action” (2015, p. 16). Drugs both licit and illicit, are largely classified as depressants, hallucinogens, opiates, and stimulants, come in myriad forms, allow for multiple avenues of consumption, and have inherent side effects. When developing, dispensing, or using a drug, it is necessary to understand the aforementioned, as well as its half-life, effective and lethal doses, potential interactions, and consequences of abuse or misuse.
What is desired from a drug is its optimum effect or highest potential, which is contingent on its bioavailability and a rather complex process of being metabolized in the body. All substances have an effect on the body known as its half-life. Drug half-life, divided into three categories: distribution half-life, therapeutic half-life, and elimination half-life. It essentially refers to a compound’s effectiveness, duration of effect, and time in the body, respectively (Doweiko, 2015, p. 23). Every drug has a preferred effect. This intended outcome is referred to as its prime or desired effect. As previously stated, each of these drugs, whether illicit or not, is endowed with an expectation of effectiveness. Said primary effects and side effects are predicated on the method of administration, which impacts the following five properties: speed, intensity, distribution, and side effects. The two most common forms of administration are enternally, usually a pill or liquid, by way of mouth which goes through the

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