Antidepressants Flashcards
What are the 3 advantages of SSRIs?
- Low incidence of side effects, most of which resolve w/ time
- No food restrictions
- Much safer in overdose
What are the 6 SSRIs?
- Fluoxetine (Prozac)
- Paroxetine (Paxil)
- Sertraline (Zoloft)
- Fluvoxamine (Luvox)
- Citalopram (Celexa)
- Escitalopram (Lexapro)
Which SSRI has the longest half-life?
Fluoxetine
What is benefit of a drug with long half life?
- Good for non-compliant pts
2. No need to taper
Which SSRI is safe in pregnancy and approved for use in children?
Fluoxetine
What are the side effects from over-stimulation of 5HT3 receptor? (3)
5HT3 = GI system (diarrhea, nausea, vomiting)
What are the side effects from over-stimulation of 5HT2C receptor? (2)
5HT2C = CNS (anxiety, mental agitation)
What are the side effects from over-stimulation of 5HT2A receptor? (6)
5HT2A = CNS, spinal cord (anxiety, mental agitation, akathisia, insomnia, myoclonus (rate of 0.2%), sexual dysfunction)
What is serotonin discontinuation/withdrawal syndrome? (4)
headache, dizziness, irritability, fatigue (upon abrupt discontinuation)
Which SSRI has the fewest drug-drug interactions?
Citalopram
Which SSRI has highest risk for GI disturbances?
Sertraline
Which SSRI can elevate levels of neuroleptics, leading to increased side effects?
Fluoxetine
What is fluoxetine also used for?
Bulimia
Which SSRI is indicated for OCD?
Fluvoxamine (Luvox)
When does therapeutic effect of SSRIs take place?
3-4 wks after administration
Other than Citalopram and Escitalopram, which SSRI has very few drug interactions?
Sertraline
Which SSRI has more anticholinergic effects (ex. sedation, constipation, wt gain)?
Paroxetine
Which SSRI has shorter half-life, thus leading to withdrawal syndrome if not taken consistently?
Paroxetine
How can the sexual s/e of SSRIs be treated? (3)
- Augmenting the regiment with buproprion
- Change to non-SSRI antidepressant
- Add medications like Sildenafil (Viagra) for men
What is the serotonin syndrome? (6)
Caused by taking 2 drugs, both of which increase serotonin
- Hyperthermia
- myoclonus
- autonomic instability (diaphoresis, shivering, tachycardia, htn)
- rigidity (neuromuscular excitability)
- delirium
- coma –> death
Which other medication is contraindicated with SSRIs and why?
MAOIs = need washout of 2 wks prior to initiation of SSRI treatment
How long do the side effects of SSRIs last?
resolve within a few wks
What are the different classes of anti-depressants? (8)
- SSRI
- SNRI
- TCA
- MAOI
- NaSSAs (Norad + specific serotonergic antidep.)
- SARI (serotonin antagonist + reuptake inhibitors)
- NDRI (norad + dopamine reuptake inhibitors)
- SSRI + SPA (serotonin partial agonist)
What are the 4 SNRIs?
- Venlafaxine (Effexor)
- Duloxetine (Cymbalta)
- Desvenlafaxine (Pristiq)
- Levomilnacipran (Fetzima)
What is duloxetine used for?
Diabetic neuropathy, fibromyalgia, neuropathic pain
What additional s/e are seen in SNRIs?
Norepi s/e = Agitation, tremor, tachycardia, HTN
Mechanism of action of NDRI?
Norepi-dopamine reuptake inhibitors
What is the 1 example of NDRI? (1)
Bupropion (Wellbutrin)
What is bupropion indicated for? (2)
adult ADHD, smoking cessation
What is bupropion NOT indicated for? (2)
- pts w/ seizure d/o
- pts w/ active eating disorders