PSMB - PHBP1 Flashcards
Science that examines the inter-relationship of the physicochemical properties of the drug, the dosage form, and route of administration on the rate and extent of systemic drug absorption.
BIOPHARMACUETICS
The study of the time course of drug movement in the body during absorption, distribution, and elimination.
PHARMACOKINETICS
The study of the relation of drug concentration or amount at the site of action and its pharmacologic response.
PHARMACODYNAMICS
Metabolism + Excretion
Elimination
Distribution + Elimination
Disposition
rate at which the solid drug enters into solution
DRUG DISSOLUTION
rate limiting step in bioavailability
DRUG DISSOLUTION
Equation involved in Drug Dissolution
Noyes-Whitney Equation
PS and SA Relationship
↓ particle size = ↑ surface area = ↑ absorption
Ratio solubility of the drug at equilibrium in a non-aqueous solvent
water phase compared with oil phase (octanol)
PARTITION COEFFECIENT
Drugs that have relative relationship with octanol possess ____
positive integers
Drugs that have relative relationship with water possess ____
negative integers
Drugs that are weak electrolytes (acids or bases) exist in both an ionized form and a nonionized form in solution.
Extent of Ionization
The choice of salt form for a drug depends on the desired physical, chemical, or pharmacologic properties.
Salt Formation
ability of a drug to exist in more than one crystalline form
Polymorphism
ability of a drug to exist as optically active stereoisomers or enantiomers
Chirality
Enantiomer of Ibuprofen that is pharmacologically active
S-enantiomers
Drugs may exist in hydrated, or solvated form or as an anhydrous molecule
Hydrates
species formed by the reversible or irreversible association of two or more interacting molecules or ions
Complex
complexes that typically involve a ring-like structure formed by the interaction between a partial ring of atoms and a metal
Chelates
Metal in hemoglobin
IRON
Metal in insulin
Zinc
Metal in cyanocobalamin
Cobalt
Delivery of active ingredient from a dosage form into solution
Liberation