Intro to Pharm Flashcards
4 ways to name drugs
Chemical name
Generic name
Proprietary (Trade) name
Street name
Pharmacodynamics
What the drugs do to the body
Studies the effects of drugs on body processes
Pharmacokinetics
What the body does to drugs
Studies the movement of drugs in the body
2 factors important for receptor binding
Affinity
Shape/specificity
Agonists
Have receptor affinity and intrinsic activity
Bind and cause a response
Often exogenous derivatives of an endogenous agonist
Antagonists
Have receptor affinity but lack intrinsic activity
Bind, cause no action
2 ways naloxone works
Blocks binding of agonist
Displaces agonist since it has a higher affinity for the receptor
ED50
Dose required to produce a therapeutic effect in 50% of the population
TI is calculated by dividing…
Toxic dose 50/effective dose 50
3 things to consider when determining which route of administration to use
- Drug characteristics
- Patient characteristics
- Therapeutic objectives
Enteral administration
Through the GI tract
Gives systemic effects
Includes oral, sublingual and rectal
Parenteral administration
Does not involve the GI tract
Usually injections
5 routes of drug administration
Enteral Parenteral Inhalational Topical Transdermal