PHARMA PEARLS Flashcards
Refers to the amount of a drug that reaches the systemic circulation
BIOAVAILABILITY
Used to determine the safety and efficacy of generic drugs
BIOEQUIVALENCE
Measure the dose or concentration required to bring about 50% of the drug’s maximal effect
POTENCY
Dose at which 50% of individuals exhibit the specified quantal effect
MEDIAN EFFECTIVE DOSE
Dose at which 50% of the animals manifest a particular toxic effect
MEDIAN TOXIC DOSE
Transfer of drug from site of administration to bloodstream
ABSORPTION
Refers to the apparent volume into which the drug is able to distribute
VOLUME OF DISTRIBUTION
Elimination of a drug at a constant rate (Irrespective of Concentration)
ZERO-ORDER KINETICS
Elimination at a rate that is proportional to the serum concentration of the drug
FIRST-ORDER KINETICS
Addition of a polar moiety (Sulfate, Acetate or Glucoronate)
PHASE II METABOLISM
Use of CYP450 system oxidation, reduction or hydrolysis
PHASE I METABOLISM
Describes the rate at which a specific drug is cleared from the system
CLEARANCE
Refers to the amount of time required for the amount of drug in the body to decrease the half of its value after the administration of the drug has been stopped
HALF-LIFE
Defined as the single amount of drug that is needed to achieve a desired plasma concentration quickly
LOADING DOSE
Amount of drug that must be given over time in order to maintain desired plasma concentration
MAINTENANCE DOSE
Used as a measure of drugs safety
THERAPEUTIC DOSE
Formula for therapeutic index
TD50/ED50 (TD: Toxic Dose, ED: Effective Dose)
Refers to the dosage range between the minimum effective therapeutic concentration or dose and minimum toxic concentration or dose
THERAPEUTIC WINDOW
Substance that shifts the graded dose-response curve to the right
COMPETITIVE ANTAGONIST
Substance that does not produce the same maximum effect and is exhibited by a decrease in Emax
IRREVERSIBLE ANTAGONIST
An antagonist that interacts directly with the agonist and not at all or only incidentally with the receptor
CHEMICAL ANTAGONIST
The action of the drug on the body
PharmacoDynaMics
The action of the body on the drug
PharmacoKineTics
Permeation that is governed by Fick’s Law
AQUEOUS DIFFUSION