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Article

Toxicity from modafinil ingestion

, , , , , , & show all
Pages 153-156 | Received 27 Mar 2008, Accepted 01 May 2008, Published online: 01 Feb 2009
 

Abstract

Introduction. Modafanil, a non-amphetamine stimulant, is used for narcolepsy, sleep apnea, and shift work sleep disorder. There is little available information on the toxicity of modafinil overdose. Method. We performed a retrospective multi-poison center chart review of patients from 11 states who had a single substance ingestion of modafanil with follow up to a known outcome for the years 2000–2007. Data collected included age, gender, dose ingested, clinical effects, length of hospital stay, and medical outcome. Results. There were 137 patients, of whom 85 (63%) were female. Ages ranged from 1 to 82 years with a mean and median of 22 years (+18) and 20 years, respectively, with 43 patients (31%) aged <6 years. Most frequently reported clinical effects were tachycardia (n = 38), insomnia (n = 33), agitation (n = 27), dizziness (n = 25), and anxiety (n = 24). Forty-five patients were managed at home and 92 in a health-care setting, with only 23 (17%) requiring a medical admission. Therapies included benzodiazepines (n = 14), diphenhydramine (n = 5), β-blockers (n = 3), haloperidol (n = 2), IV fluid hydration (n = 2), and one each of nitroglycerin, epinephrine, benztropine, and promethazine. Conclusions. In this case series, clinical effects of modafinil overdoses were generally mild with predominantly tachycardia and CNS toxicity. However, clinically significant effects warranting specific therapy occurred in a minority of patients.

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