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In pharmacology, biological activity or pharmacological activity describes the beneficial or adverse effects of a drug on living matter. [1] [2] When a drug is a complex chemical mixture, this activity is exerted by the substance's active ingredient or pharmacophore but can be modified by the other constituents. Among the various properties of ...
Toxicity is the degree to which a chemical substance or a particular mixture of substances can damage an organism. [1] Toxicity can refer to the effect on a whole organism, such as an animal, bacterium, or plant, as well as the effect on a substructure of the organism, such as a cell (cytotoxicity) or an organ such as the liver (hepatotoxicity).
Although activated charcoal is the most commonly used agent for GI decontamination in poisoned patients, medical professionals use discretion when determining whether or not its use is indicated. [7] In a study of acute poisonings from agricultural pesticides and yellow oleander seeds, the administration of activated carbon did not affect ...
it is most often based on the specific, accurate, precise and timely determinations of the active and.or toxic forms of drugs in biological samples collected at the appropriate times in the correct containers (PK monitoring), or can employ the measurement of a biological perimeter as a surrogate or end-point marker of effect (PD monitoring) e.g ...
In pharmacology, an effective dose (ED) or effective concentration (EC) is the dose or concentration of a drug that produces a biological response. [1] [2] The term "effective dose" is used when measurements are taken in vivo, while "effective concentration" is used when the measurements are taken in vitro.
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.
A diagnosis is the assessment that a particular medical condition is present while an indication is a reason for use. [3] The opposite of an indication is a contraindication, [4] a reason to withhold a certain medical treatment because the risks of treatment clearly outweigh the benefits.
Discovery is the identification of novel active chemical compounds, often called "hits", which are typically found by assay of compounds for a desired biological activity. [7] Initial hits can come from repurposing existing agents toward a new pathologic processes, [ 8 ] and from observations of biologic effects of new or existing natural ...