antidepressants Flashcards
tricyclic antidepressants (1st gen)
resemble phenothiazine antipsychotics
tricyclic antidepressant ADME
first pass effect lipid soluble bound to plasma proteins slow elimination active metabolites
tricyclic antidepressant MOA
inhibit NE and 5HT reuptake
block muscarinic ACh receptors
block alpha1 NE receptors
2-3wk to start seeing effect
8-10wks for max effect
changes in neurogenesis
tricyclic antidepressant effects
sedation CNS depressants promote sleep mood elevation (may feel worse first) high dose: seizure antimuscarinic effects arrhythmias orthostatic hypotension
imipramine
tricyclic AD
bed-wetting
desipramine
tricyclic AD
amitryptyline
tricyclic AD
most commonly used
clomipramine
tricyclic AD
OCD
nortriptyline
tricyclic AD
tricyclic antidepressant SE
orthostatic hypotension arrhythmias weight gain withdrawal OD: fatal
all antidepressant BBW
increase risk of suicidal thinking/behavior in children, adolescents, and young adults
tricyclic antidepressant Rx interactions
potentiate other CNS depressants
potentiate hypertensive effects
monoamine oxidase inhibitors
additive effects
mirtazapine
2nd gen AD
blocks 5HT2 and a2 adrenergic receptors
SE: weight gain
trazodone
2nd gen AD
inhibits 5HT uptake
blocks 5HT2 receptors
SE: priapism (hella big dick…stay away)
buproprion
2nd gen AD
weak inhibitor of reuptake
use: smoking cessation
SE: seizures
DONT GIVE IF SEIZURES OR EATING DISORDERS