8. Muscarinic receptor blocking drugs Flashcards
Tertiary tropines
Atropine
Scopolamine
Benztropine
Quartrenery tropines
suffix -tropium
Ipratropium
Tiotropium
Synthetic drugs with tertiary N
Procyclidine
Cyclopentolate
Tolterodine
Synthetic drugs with quaternary N
Propantheline
Others Muscarinic receptor blocking drugs
Oxybutynin
Butyl-scopolamine
Typs Muscarinic receptor blocking drugs
Tertiary tropines
Quartrenery tropines
Synthetic drugs with tertiary N / quaternary N
Others
Atropine
Competitive M receptor antagonist antidote for cholinergic agonist eye drops / bradycardia, grade I AV block / GI, bladder, urinary cramps Belladonna (jimson weed) 2-3 hr mydriasis 7-10day DOA Lethal dose 100 mg, infant 2mg
Scopolamine
2-3 hr mydriasis 2-7day DOA
Large distribution
Lethal dose 500 mg
Antiemetic (motion sickness)
Benztropine
M1 antagonist
Parkinson’s disease
Ipratropium & Tiotropium
M3 antagonist
Bronchodilator for COPD
Asthma prophylaxis
Procyclidine
Parkinson’s disease
Cyclopentolate
Short acting (3-6hr DOA) Ophthalmology
Tolterodine
M3
For overactive bladder
Propantheline
For smooth muscle spasm
Oxybutynin
M3
For urinary incontinence