Related Experiment Video
Updated: May 21, 2026

Vagus Nerve Stimulation As an Adjunctive Neurostimulation Tool in Treatment-resistant Depression
Published on: January 7, 2019
Fatality following a suicidal overdose with varenicline
Christophe P Stove1, Els A De Letter, Michel H Piette
1Department of Toxicology, Forensic Institute-Ghent University, Harelbekestraat 72, 9000, Ghent, Belgium. christophe.stove@ugent.be
This study reports the first fatality linked to a varenicline overdose. Extremely high varenicline concentrations were found in postmortem samples, highlighting potential risks of this smoking cessation drug.
Area of Science:
- Pharmacology
- Forensic Toxicology
Background:
- Varenicline, a smoking cessation aid, acts on nicotinic acetylcholine receptors.
- Concerns exist regarding varenicline's association with suicidal ideation and overdose cases.
Observation:
- A suicidal case involving varenicline overdose was analyzed using postmortem samples.
- Gas chromatography-mass spectrometry identified extremely high varenicline concentrations (>250 ng/ml) in blood.
Findings:
- The deceased individual exhibited exceptionally high varenicline levels in blood, urine, and vitreous humor.
- This case represents the first documented fatality associated with a varenicline overdose.
Implications:
- High varenicline concentrations may be associated with fatal outcomes.
- Further research is needed to understand the toxicological profile of varenicline overdose.
- Clinical monitoring for patients on varenicline, especially those with risk factors, may be warranted.
Related Concept Videos
Drug Toxicity: Risk factors
Stimulants
Cocaine can be administered via snorting, injection, or smoking. It primarily functions by blocking the reuptake of dopamine, resulting in a euphoric high characterized by an intense sensation of happiness and...
Pharmaceutical Poisoning: Potential Scenarios
Drugs Acting on Autonomic Ganglia: Stimulants
Ganglionic stimulants activate NM nicotinic receptors in autonomic ganglia, falling into two categories: nicotine mimetics [e.g., lobeline, dimethylpiperazine, tetramethylammonium] and muscarinic receptor agonists [e.g., muscarine, methacholine]. The first category's action is rapid and blocked by nicotinic receptor antagonists, while the second category's action is delayed and blocked by atropine-like agents. Nicotine, an alkaloid, affects the heart rate by stimulating sympathetic or...
Pharmaceutical Poisoning: Treatment Strategies
Drug Toxicity: Overview
