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Transient thyrotoxicosis from thyroiditis induced by sibutramine overdose: a case report.
1Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Gyeongsangnam-do, South Korea.
Human & Experimental Toxicology
|May 25, 2013
Summary
Sibutramine overdose can cause transient thyrotoxicosis with thyroiditis. This case highlights a rare adverse effect of the antiobesity drug, sibutramine, on thyroid function.
Area of Science:
- Endocrinology
- Pharmacology
- Toxicology
Background:
- Sibutramine is an antiobesity medication that acts by inhibiting serotonin and noradrenaline reuptake in the hypothalamus.
- Thyrotoxicosis is a clinical condition resulting from excessive thyroid hormone levels.
- Intentional drug overdose presents unique challenges in emergency medicine and toxicology.
Observation:
- A 37-year-old male intentionally ingested 280 mg of sibutramine.
- The patient presented with symptoms indicative of a thyrotoxic state.
- Thyroid function tests revealed abnormalities, including irregular radioisotope uptake on a (99m)Technetium-pertechnetate scan, with negative thyroid-stimulating hormone receptor and thyroperoxidase antibodies.
Findings:
- The patient experienced transient thyrotoxicosis.
- Thyroiditis was diagnosed in conjunction with the thyrotoxicosis.
- Thyroid function normalized spontaneously following the overdose event.
Implications:
- This case suggests a potential link between sibutramine overdose and the development of transient thyrotoxicosis with thyroiditis.
- Clinicians should consider sibutramine toxicity in patients presenting with unexplained thyrotoxicosis, especially after intentional overdose.
- Further research may be warranted to elucidate the precise mechanism by which sibutramine induces thyroid dysfunction.
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