Mood disorders- PHARM- Exam 2 Flashcards
_____ Naturally occurs in the body; may raise dopamine levels
Can be used as an adjunctive option for mild to moderate.
S-Adenosylmethionine (SAMe)
S-Adenosylmethionine (SAMe) may trigger ____
manic episodes
____ Natural precursor to serotonin. What are the SE?
5-Hydroxytryptophan (5-HTP)
GI upset, serotonin syndrome, eosinophilic myalgia syndrome
_____ works better if combined with antidepressant, may increase risk of bleeding
Omega-3 Fatty Acids
_____ increases serotonin, and possibly norepinephrine and dopamine levels
St. Johns Wort
What are the SE of St. John’s Wort? Why do prescribers tend to dislike it?
GI upset, serotonin syndrome, photosensitivity
LOTS of drug-drug interactions
_____ may help with depression but risk of GI upset, mania, bleeding; can be fatal at high doses
Saffron
____ Improved mood in pts being treated for memory loss; may increase sensitivity to serotonin, may increase risk of bleeding
Ginkgo biloba
**What are the prescribing guidelines for oral antidepressants?
-Start low and go slow : titrate dose over 7-10 days
-trial of at least 4 weeks (usually 4-6 weeks)
-Rx should be continued for 6+ months after s/s improvement
-Gradual down titration is recommended when discontinuing antidepressants
**When can pts start to see an improvement once starting oral antidepressants?
Patients may see improvement as early as week 1, but it generally takes 4-6 weeks to see a response
May consider treatment modification if <25% improvement in baseline s/s after 4-6 weeks
What are the 3 classes of antidepressants that fall under the first generation?
What are the 5 classes of antidepressants that fall under the second generation?
______ selectively decreases the action of 5-HT reuptake pump, leading to increased serotonin levels in the synapse
SSRI
often takes several weeks to see the benefit
What are the drugs that fall into the SSRI category?
Sertraline (Zoloft)
Citalopram (Celexa)
Escitalopram (Lexapro)
Fluoxetine (Prozac)
Paroxetine (Paxil)
Fluvoxamine (Luvox)
When are SSRIs usually dosed? What is the 1/2 life?
Typically QAM (½ life approx. 24 hrs.)
SSRIs are metabolized in the ____
liver
**If your pt is on a SSRI and want to change to MAOI, how long do you need to wait?
2 weeks
**If your patient is on Fluoxetine and you want to start an MAOI, how long do you need to wait?
5 weeks
What are some common SE of SSRIs? What are the two major ones?
nausea, diarrhea, anorexia
insomnia or hypersomnia
headache, dizziness
↓libido, anorgasmia, ED
anxiety, ↑ risk of suicide**
prolonged QT, weight gain, bleeding, orthostatic hypotension, serotonin syndrome**
When does Serotonin syndrome typically occur?
within 24 hours (often within 6 hours) of starting/changing a medication or overdosing
What are some s/s of serotonin syndrome?
Diarrhea, increased bowel sounds, agitation, hyperreflexia, dry mucous membranes, autonomic instability, hyperthermia, HTN, tremor, clonus, seizure, death
True/False: If you are concerned about serotonin syndrome you can order a 5-HT level test
FALSE, 5-HT levels do not correspond
What is the treatment for serotonin syndrome?
Supportive care
D/C serotonergic medications
Sedation with benzodiazepines
Normalize vitals and hydration status
_____ is more likely to cause GI upset than others in the class, esp. diarrhea
Sertraline (Zoloft)
_____ has a slightly higher chance of insomnia so should be dosed in the morning
Sertraline (Zoloft)
_____ is most associated with prolonged QT and palpitations and has minimal SE profile otherwise
Citalopram (Celexa)
Escitalopram (Lexapro)
SSRI
____ has the least inhibition of hepatic cytochrome enzymes
Citalopram (Celexa)
Escitalopram (Lexapro)
_____ is a good choice for alcoholics
Citalopram (Celexa)
Escitalopram (Lexapro)
_____ is a bad choice for patients with heart problems
Citalopram (Celexa)
Escitalopram (Lexapro)
_____ has the shortest 1/2 life and frequently causes somnolence and should be taken at bedtime
SSRI
Fluvoxamine (Luvox)
SSRI
_____ and ____ are a potent inhibitor of 2 cytochrome systems, potential for DDIs
Fluvoxamine (Luvox)
Paroxetine (Paxil)
____ longest half-life of any in the class (up to 3 days)
Fluoxetine (Prozac)
_____ was the first SSRI on the market
Fluoxetine (Prozac)
_____ has a slightly higher risk of insomnia SE and can increase anxiety
Fluoxetine (Prozac)
Which two drugs should not be written with Tamoxifen?
Fluoxetine (Prozac)
and
Paroxetine (Paxil)
SSRI
_____ causes anticholinergic SE, unlike others in the class
Paroxetine (Paxil)
_____ slightly higher risk of orthostatic hypotension, weight gain, & sexual dysfunction than other SSRIs
Paroxetine (Paxil)
_____ are used for tx of other disorders, including anxiety disorders, fibromyalgia, neuropathy, menopausal s/s
SNRIs
_____ blocks reuptake of 5-HT and norepinephrine (NE), increasing their levels in the synapse
SNRIs
Which two SNRI has a greater effect on the NE?
Savella
and
Fetzima
Which SNRIs have a greater effect on 5-HT?
Venlafaxine (Effexor)
Desvenlafaxine (Pristiq)
Duloxetine (Cymbalta)
What are the 5 SNRIs?
Venlafaxine (Effexor)
Desvenlafaxine (Pristiq)
Duloxetine (Cymbalta)
Milnacipran (Savella)
Levomilnacipran (Fetzima)
____ are cleared through the kidneys and liver
SNRIs
What are the CI to SNRIs?
-use within 2 weeks of an MAOI
-Caution if using with other serotonergic drugs
-Caution if angle closure glaucoma
(SSRIs/SNRIs) are more associated with weight gain
SSRIs