Pharm Flashcards
What are common SSRI’s?
Fluoxetine (Prozac), Sertraline (Zoloft), escitalopram (Lexapro)
What are indications for SSRIs?
depression, anxiety, and many more
What drug classes are used to treat depression and anxiety?
SSRI (most common), SNRI, Tricyclic, SARI
ADRs of SSRI
suicidal thoughts, GI upset, CNS irritation, sexual dysfunction, weight gain, prolonged QT, serotonin syndrome
DIs of SSRI
CYP450 inhibitor, protein bound drugs
MOA of SSRI
inhibit reuptake of serotonin
MOA of SNRI
inhibit reuptake of serotonin and norepinephrine
ADR of SNRI
same as SSRIs except MI and hypertensive crisis instead of QT prolongation
What are two common SNRI drugs (generic and drug names)?
Duloxetine (Cymbalta), Venlafaxine (Effexor)
What are symptoms of serotonin syndrome?
Occurs within several hours of taking new drug or increasing dose
Agitation/restlessness, confusion, rapid HR, high BP, dilated pupils, twitching, muscle rigidity, sweating, diarrhea
Severe, life-threatening sx’s: high fever, seizures, irregular heartbeat, LOC
DI of SNRI
CYP450 inhibitor, MAOIs (causes hypertensive crisis)
What drugs common in depression treatment can cause hypertensive crisis?
SNRIs
MOA of amitriptyline
inhibits repute of serotonin and NE; also an anticholinergic
Drug class of amitriptyline
Tricyclic
How should antidepressants be d/c’d?
- taper by 25% over 2-4 wks
- cross taper if switching antidepressants
ADR of TCAs
anticholinergic effects, suicide, weight gain, sedation, cardiac, agranulocytosis, seizures
Which anti-depression drug class has anticholinergic effects?
Tricyclics
Which anti-depressant also used for neuropathic pain, HA, GI upset?
amitriptyline
Black box warning of all anti-depressants
suicide
3 monoamine neurotransmitters involved in behavioral medicine and what emotions they control?
serotonin = obsession, compulsion, memory
NE = alertness, concentration, energy
dopamine = reward, motivation
Pathway of serotonin synthesis
L-tryptophan -> 5-hydroxy-L-tryptophan -> 5-HT (serotonin)
Where is serotonin go in body?
10% to CNS - mood, appetite, sleep
90% to gut - intestinal movement
metabolized in liver and excreted in kidneys
How long does it take for a anti-depressant to take effect?
4-6 weeks
Example of SARI antidepressant
Trazodone
MOA of MOAI drugs
inhibits MOAs that breakdown cytoplasmic catecholamines in presynaptic terminal
- decrease 5-HT (serotonin) metabolism
- increase presynaptic concentration of 5-HT
Why are MOAIs rarely used?
Many ADR and DIs
ADRs: suicide, CNS, dry mouth, weight gain, orthostasis, sexual dysfunction
DIs: MANY foods (cheese, tap beer, raspberries, avocados, bananas), ADR duplication, serotonin syndrome risk
2 types of MOA proteins inhibited by MOAIs?
A: serotonin and norepinepherine
B: phenylethylamine
Trade name of Bupropion
Wellbutrin