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Pharmacology is the study of drugs and their effects on living organisms. It is traditionally divided into two complementary branches. Pharmacokinetics describes what the body does...
Absorption is the movement of a drug from its site of administration into the bloodstream. The rate and extent of absorption depend on the route of administration, drug solubility,...
The half-life of a drug, denoted t½, is the time required for the plasma concentration of the drug to decrease by 50 percent, and it is one of the most clinically important pharmac...
Pharmacodynamics describes how a drug produces its effects at the molecular, cellular, and whole-organism level. The dose-response curve plots the drug dose on the x-axis against t...
A drug interaction occurs when one drug alters the activity of another. Pharmacokinetic interactions arise when absorption, distribution, metabolism, or excretion is altered, for e...
Antibiotics are drugs that either kill bacteria (bactericidal) or inhibit their growth (bacteriostatic), and they target structures or processes that are specific to bacteria, such...
Antihypertensive drugs lower blood pressure through several distinct mechanisms, and the choice of agent often depends on patient comorbidities. ACE inhibitors such as lisinopril,...
Drug development follows a structured sequence from laboratory research to general clinical use. Preclinical testing involves laboratory and animal studies to evaluate basic pharma...