Non-opioid Analgesics Flashcards
NSAIDs - Arylpropionic acids
Ibuprofen
Naproxen
NSAIDs- Arylacetic Acids
Indomethacin
Diclofenac
Ketorelac
Etodolac
For myalgias, arthralgias, sprains, strains
Ibuprofen
For Dysmenorrhea
Ibuprofen
For Headache
Tylenol
May potentially inhibit bone healing (post-ortho)
Tylenol
Three therapeutic applications of NSAIDs
Analgesic
Antipyretic
Anti-inflammatory
Three phases of inflammation
Acute (vasodil)
Subacute (infiltration)
Chronic (proliferation)
___ and ___ protect the stomach lining
–what is the enzyme?
PGE2 and PGI2
(inhibit acid, promote mucus)
COX1
COX1 is ___
COX2 is ___
1 = constitutive
2 = Inducible
COX2 is present constitutively in..
the brain and spinal cord
Aspirin MOA
Acetylates COX (ser529)
Irreversibly Inhibits COX1/2
NSAIDs (except aspirin) are ______
competitive, reversible inhibitors of COX1/2
These NSAIDs also inhibit LT synthesis
Indomethacin
Dicclofenac
Aspirin mainly absorbed here
Jejunum
Aspirin distribution
Most tissues/fluids
Crosses placenta
Aspirin T1/2
15 minutes
(but metabolite salicylate half life = 12 hr)
Is aspirin secreted or reabsorbed in tubule
Yes
Active secretion, Passive reabsorption
Non-salicylate NSAID’s show little
first pass metabolism
(Multiple routes of metabolism – Oxidation, Demethylation, Conjugation)
Timeline for aspirin analgesic tolerance
no tolerance with analgesic effects!
Arylpropionic acids T1/2
Ibuprofen = 2h
Naproxen = 14h
_____ is safest Arylpropionic in coronary artery disease
Naproxen
Acetic acid derivatives and their risks
Diclofenac (peptic ulcer/kidney dysfxn if prolonged use)
Indomethacin (Gout, ankylosing spond. pericarditis)
Ketorolac (Less than 5 days, low GI effect)
(also etodolac?)
Meloxicam at low doses is..
COX-2 selective
(long T1/2 = 20hrs)