Quiz 2 Flashcards
(35 cards)
SSRIs compared to TCAs
- similar efficacy in depression
- clear improvement in safety margin
- less severe side effects
main ADE of SSRIs
serotonin syndrome
early hypothesis of SSRI action
enhance synaptic 5HT due to reuptake inhibition
delayed hypothesis of SSRI action
altered gene expression and brain function
SSRIs work well in people with
negative effect
- often fail to relieve symptoms of decreased positive effect
SSRI side effects
hyponatremia, agitation, anxiety, panic attacks, restlessness, psychomotor retardation, mild parkinsonian & dystonic movements, rapid muscle movements during the night, inhibition of spinal reflexes of orgasm and ejaculation, N/V, increased bowel motility, GI cramps & diarrhea
what is a main issue with SSRIs?
sexual dysfunction (>50%)
effects of too much serotonin
anxiety, insomnia, sexual dysfunction, GI, serotonin syndrome. cardiac valve pathology
effects of too little serotonin
bulimia, panic, OCD, depression
Fluoxetine (Prozac)
- increases NE & DA
- good for pts with reduced positive effect
- metabolite has longer half-life and drug interactions
sertraline (Zoloft)
- anxiolytic
- increase DA
- some positive effects
paroxetine (Paxil)
- reduce anxiety symptoms
- weak NET inhibition
- block NOs (->sexual dys.)
- withdrawal symptoms
fluvoxamine (Luvox)
- OCD & anxiety
citalopram (cipramil)
- mild H1 blocker
- not many side effects
- R & S enantiomers
S-citalopram (Escitalopram)
- pure S
- NO H1 activity
- NO CYP2D6 inhibition
- selective for ONLY SERT
o SNRIs
- serotonin NE reuptake inhibitors
- duloxetine, venlafaxine
venlafaxine (Effexor)
- blocks SRT (low doses)
- blocks NET (high doses
levomilnacipran (Fetzima)
- greater potency for NERT than SERT
- no direct effects on DA
o NDRIs
- NE dopamine reuptake inhibitors)
- bupropion
bupropion (Wellbutrin)
- weak inhibitor of both NET and DAT
- metbolites are more potent
- for pts who cannot tolerate SSRIs or dont respond
duloxetine (Cymbalta)
- blocker of 5HT and NE uptake
- chronic pain & pain w/ depression
NRIs
- NE selective reuptake inhibitors
- atomoxetine(Strattera- ADHD), reboxetine (not FDA approved), viloxazine (depression)
SARIs
- serotonin antagonist reuptake inhibitors
- trazodone, nefazodone
trazodone (Desyrel)
- sedative antidepressant (H1 and alpha1)