4.12 pharm beta antag Flashcards
(25 cards)
Nadolol mech
Inverse agonist
Propranolol mech
Neutral antag
Pindolol mech
Antag with slight positive agonist
Timolol mech
Antagonist
Metoprolol mech
β1 inverse agonist
Acebutolol mech
β1 antag
Esmolol mech
Fast acting β1 antag
Butoxamine mech
β2 antag
Labetalol mech
3:1 β:α antag
Carvedilol mech
10:1 β:α antag
Powerful antioxidant
Carvedilol
Used for CHF
Metoprolol
Carvedilol
Helps treat arrhythmias
Propranolol
Maybe Carvedilol
For MI
Nadolol Pindolol Propranolol Carvedilol Atenolol Metoprolol
Preferred for asthmatics
Metoprolol
Acebutolol
Esmolol
β1 selective antagonists or inverse agonists
Metoprolol
Acebutalol
Esmolol
Common chemical structure of beta blockers
Bulk on amine (favors β)
3 carbon chain on amine (favors antagonism)
ADRs for all β blockers
Rebound ischemia Fatigue Vivid dreams Insomnia Hallucinations Exercise intolerance
Contraindications for all β blockers & for non selective
Late stage CHF
Asthma (for non selective)
AV node conductance disturbances
Hypoglycemia
Used in urgent hospital settings where β blockade is needed
Esmolol
Has a short duration because rapidly metabolized by esterases
Esmolol
Impotence drug acting equally on PDE5&PDE6
Sildenafil
Impotence drug selective for PDE5
Tadalafil
Disturbs color perception
Sildenafil