pharmacology definition

the study of drug and their action on the body

the study of drugs used to treat, cure, or prevent disease

pharmacology and therapeutics combined.
concept: disease management

Respiratory Care pharmacology
application of pharmacology to cardiopulmonary disease and critical care.
the study of drug, their origins, properties, interactions with living organisms.

a chemical that alters an organisms functions or processes.

Additive effect
2 drugs give an effect is equal the sum of their individual effect. 1+1=2

two drugs give an effect greater than the simple sum of their effects. both drugs are active, team concept. 1+1=3

one drug is inactive, nevertheless increases the response of the other drug. 1+0=3

2 drugs with opposing effects

occurs when drugs rate of removal or inactivation is slower than the rate of administration.

increasing amount of a drug are needed to produce same effect.

cells become less responsive to drug because of exposure to drug overtime

rapidly developing tolerance

idiosyncratic effect
opposite effect or unusual of what is expected

allergy or immune mediated response, can be life threatening. ex. epi-pen

half life
time for drug concentration to decrease by half.

steady state
maximum concentration

loading dose
given at higher doses

maintenance dose
administered at lower doses once steady state is achieve.

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Define Half-Life t½ means half life – The time it takes for blood levels of drug to decrease to half of what it was at equilibrium. If maximum level is 16 mg and the half life is 2 hours, after …

1. pharmacology Pharmacology is defined as the study of the interaction of chemical substances with living systems. 2.Drug A chemical substance that acts on living systems through chemical processes, which is utilized for diagnosis, prevention and cure of an unwanted …

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