Ch.1 Drug Action Flashcards
Disintegration and dissolution of a solid form of a medication
Pharmaceutics
The dissolving of particles in the GI fluid before absorption
Dissolution
To break down into small particles
Disintegration
3 processes of Absorption
- Passive
- Active
- Pinocytosis
When drug passes to the liver first
First-pass effect
% of the administered drug dose hat reaches the systemic circulation
Bioavailability
Absorption that requires a carrier such as an enzyme or protein to move the drug against a concentration gradient;requires energy
Active absorption
Occurs mostly by diffusion H->L [C}
Passive absorption
Process by which cells carry a drug across their membrane by engulfing the drug particles
Pinocytosis
Drug that produces a response
Agonist
Drug that blocks a response
Antagonist
More severe than the side effects
Adverse Reactions
Onset time for oral pain meds admin
45-60 min
Onset time for IM/SubCu pain med
30 min
Onset time for IV meds
15 min
Test to help determine renal function
Creatine Clearance
Length of time the drug has an effect
Duration of action
Fillers and inert substances used to help drug take shape and size
Excipients
Drugs not bound to a protein;active
Free drugs