The cost of antidepressant overdose

Area of Science:

• Toxicology
• Pharmacology
• Public Health

Background:

• Self-poisoning accounts for 90% of suicide attempts in general hospitals.
• Drug overdose, particularly antidepressants, is a common method of suicide among women.
• Understanding the comparative impact of different antidepressant classes in overdose cases is crucial for healthcare resource allocation.

Purpose of the Study:

• To compare the hospital treatment duration and cost associated with overdoses of tricyclic antidepressants (TCA) versus selective serotonin reuptake inhibitors (SSRI).
• To evaluate the overall economic implications of antidepressant overdose management in a critical care setting.

Main Methods:

• Retrospective naturalistic review of 200 patients treated in a general hospital Critical Care Unit following medication overdose.
• Analysis of patient data to determine the mean duration of hospital stay and the total dollar cost of treatment for TCA and SSRI overdoses.
• Statistical comparison of outcomes between the two antidepressant classes.

Main Results:

• Antidepressant overdoses constituted 12% of all medication overdoses in the study cohort.
• Mean hospital stay for TCA overdose (7 days) was significantly longer than for SSRI overdose (3 days) (p < 0.05).
• Hospital treatment cost for TCA overdose ($22,923) was four times greater than for SSRI overdose ($5,379) (p < 0.05).

Conclusions:

• Despite potentially lower initial drug prices, tricyclic antidepressants incur significantly higher healthcare costs and longer hospitalizations in overdose cases compared to SSRIs.
• The adverse consequences and resource utilization associated with TCA overdoses may outweigh the apparent cost advantage of the drug itself.
• This highlights the importance of considering the total cost of treatment, including adverse events, when evaluating antidepressant prescribing practices.