SSRIs and SNRIs vs TCAs, MAOIs, and atypical antidepressants
How to tell SSRIs and SNRIs and TCAs, MAOIs, and atypical antidepressants apart when a board question makes them look alike.
SSRI/SNRI questions center on reuptake and tolerability; TCA/MAOI questions center on toxicity and interactions.
Side by side
SSRI sexual dysfunction/GI effects or SNRI blood pressure effect from serotonin and norepinephrine reuptake blockade.
TCA anticholinergic/cardiotoxic overdose, MAOI tyramine crisis, or atypical patterns such as bupropion seizure risk and mirtazapine weight gain.
Newer reuptake inhibitors increase serotonin with or without norepinephrine while avoiding much receptor promiscuity.
Older or atypical antidepressants add receptor blockade, monoamine breakdown inhibition, or dopamine/norepinephrine effects.
Sertraline sexual dysfunction points SSRI; venlafaxine hypertension points SNRI.
Amitriptyline wide QRS points TCA; phenelzine with aged cheese hypertension points MAOI.
The trap
All treat depression, but overdose pattern and food/drug interaction clues separate the classes.
Watch it explained
Test it nowThe repair move
For antidepressants, attach the adverse-effect signature before choosing the class.
Try a free question
CoreA patient with depression starts sertraline and later develops sexual dysfunction and GI upset. Which antidepressant class is most likely?
Show answer and explanation
Answer: A. SSRI. SSRIs selectively increase serotonin signaling and commonly cause sexual dysfunction and GI symptoms.
Why the other choices are tempting
- B. SNRIs increase serotonin and norepinephrine and may raise blood pressure.
- C. TCAs have anticholinergic, antihistamine, alpha-blocking, and cardiotoxic overdose effects.
- D. MAOIs have major food and drug interaction risks including hypertensive crisis.
- E. Bupropion is more dopaminergic/noradrenergic and is less associated with sexual dysfunction.
Flashcards
Tap a card to flip it.
What is the fastest separator for SSRIs and SNRIs vs TCAs, MAOIs, and atypical antidepressants?
SSRI/SNRI questions center on reuptake and tolerability; TCA/MAOI questions center on toxicity and interactions.
What clue should make you choose SSRIs and SNRIs?
SSRI sexual dysfunction/GI effects or SNRI blood pressure effect from serotonin and norepinephrine reuptake blockade.
Quick answers
What is the fastest way to tell SSRIs and SNRIs from TCAs, MAOIs, and atypical antidepressants?
SSRI/SNRI questions center on reuptake and tolerability; TCA/MAOI questions center on toxicity and interactions.
What is the key clue for SSRIs and SNRIs?
SSRI sexual dysfunction/GI effects or SNRI blood pressure effect from serotonin and norepinephrine reuptake blockade.
What is the key clue for TCAs, MAOIs, and atypical antidepressants?
TCA anticholinergic/cardiotoxic overdose, MAOI tyramine crisis, or atypical patterns such as bupropion seizure risk and mirtazapine weight gain.
What is the common trap with SSRIs and SNRIs vs TCAs, MAOIs, and atypical antidepressants?
All treat depression, but overdose pattern and food/drug interaction clues separate the classes.