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  2. Pharmacokinetics - Wikipedia

    en.wikipedia.org/wiki/Pharmacokinetics

    Pharmacokinetics is based on mathematical modeling that places great emphasis on the relationship between drug plasma concentration and the time elapsed since the drug's administration. Pharmacokinetics is the study of how an organism affects the drug, whereas pharmacodynamics (PD) is the study of how the drug affects the organism.

  3. Drug action - Wikipedia

    en.wikipedia.org/wiki/Drug_action

    The action of drugs on the human body (or any other organism's body) is called pharmacodynamics, and the body's response to drugs is called pharmacokinetics. The drugs that enter an individual tend to stimulate certain receptors, ion channels, act on enzymes or transport proteins. As a result, they cause the human body to react in a specific ...

  4. Plateau principle - Wikipedia

    en.wikipedia.org/wiki/Plateau_Principle

    Plateau principle. The plateau principle is a mathematical model or scientific law originally developed to explain the time course of drug action (pharmacokinetics). [1] The principle has wide applicability in pharmacology, physiology, nutrition, biochemistry, and system dynamics. It applies whenever a drug or nutrient is infused or ingested at ...

  5. Pharmacology - Wikipedia

    en.wikipedia.org/wiki/Pharmacology

    D010600. Pharmacology is the science of drugs and medications, [ 1 ] including a substance's origin, composition, pharmacokinetics, pharmacodynamics, therapeutic use, and toxicology. More specifically, it is the study of the interactions that occur between a living organism and chemicals that affect normal or abnormal biochemical function. [ 2 ]

  6. Pharmacotherapy - Wikipedia

    en.wikipedia.org/wiki/Pharmacotherapy

    The effect of age causes deterioration of organ function, [17] like liver function and kidney function. Pharmacokinetics is the study of drugs' effects on absorption, distribution, metabolism, and elimination. Pharmacodynamics is the study of drugs' effects on our body and their mechanisms.

  7. Drug metabolism - Wikipedia

    en.wikipedia.org/wiki/Drug_metabolism

    Drug metabolism is the metabolic breakdown of drugs by living organisms, usually through specialized enzymatic systems. More generally, xenobiotic metabolism (from the Greek xenos "stranger" and biotic "related to living beings") is the set of metabolic pathways that modify the chemical structure of xenobiotics, which are compounds foreign to an organism's normal biochemistry, such as any drug ...

  8. Pharmacodynamics - Wikipedia

    en.wikipedia.org/wiki/Pharmacodynamics

    Pharmacodynamics (PD) is the study of the biochemical and physiologic effects of drugs (especially pharmaceutical drugs). The effects can include those manifested within animals (including humans), microorganisms, or combinations of organisms (for example, infection). Pharmacodynamics and pharmacokinetics are the main branches of pharmacology ...

  9. First pass effect - Wikipedia

    en.wikipedia.org/wiki/First_pass_effect

    The first pass effect (also known as first-pass metabolism or presystemic metabolism) is a phenomenon of drug metabolism at a specific location in the body which leads to a reduction in the concentration of the active drug before it reaches the site of action or systemic circulation. [1][2] The effect is most associated with orally administered ...