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Pharmacological Therapies2-4 weeks to work · lethal in overdose

Tricyclic AntidepressantsNCLEX cheat sheet

2-4 weeks to work · lethal in overdose

0 key facts 5 practice questions Reviewed Oct 2026
The 1-minute sheetCinnaRN

Onset

  • 2-4 weeks for mood to lift
  • Do not stop early

Side Effects

  • Anticholinergic: dry mouth, blurred vision, constipation, retention
  • Sedation and orthostatic hypotension
  • Change position slowly

The Danger Window

  • Energy returns BEFORE mood
  • Suicide risk is highest then
  • Limit the quantity dispensed

Overdose

  • Wide QRS, arrhythmias, seizures
  • Never with an MAOI
Key takeaway

2-4 weeks to work · lethal in overdose

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Question 1 of 5

A client started on amitriptyline, a tricyclic antidepressant (TCA), reports dry mouth, constipation, blurred vision, and urinary hesitancy. The nurse recognizes these as which type of effect?

References

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