Successful Treatment With Intravenous Lipid Emulsion of Accidental Amantadine Overdose: A Case Report

ABSTRACT A 2.5‐year‐old, 4.9 kg, Chinese Crested was accidentally administered a dose of 43.5 mg/kg of amantadine, resulting in the rapid onset of tremors, agitation, vertical nystagmus, and lack of pupillary light reflex in one eye. After unsuccessful treatment with methocarbamol, a 1.5 mL/kg bolus...

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Main Authors: Brett Hogberg, Kristen Marshall, Mark Vardanega
Format: Article
Language:English
Published: Wiley 2025-05-01
Series:Veterinary Medicine and Science
Subjects:
Online Access:https://doi.org/10.1002/vms3.70402
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author Brett Hogberg
Kristen Marshall
Mark Vardanega
author_facet Brett Hogberg
Kristen Marshall
Mark Vardanega
author_sort Brett Hogberg
collection DOAJ
description ABSTRACT A 2.5‐year‐old, 4.9 kg, Chinese Crested was accidentally administered a dose of 43.5 mg/kg of amantadine, resulting in the rapid onset of tremors, agitation, vertical nystagmus, and lack of pupillary light reflex in one eye. After unsuccessful treatment with methocarbamol, a 1.5 mL/kg bolus of 20% intravenous lipid emulsion therapy was initiated followed by a 0.25 mL/kg/min continuous rate infusion. All clinical signs secondary to the amantadine toxicity resolved following intravenous lipid emulsion therapy and remained normal on 24 h, day 5, day 18, and day 50. This represents the first report of amantadine toxicity in a clinical setting and is the first case showing that intravenous lipid emulsion therapy could be an effective treatment for amantadine toxicity.
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spelling doaj-art-3efeaadf60e945b087b9d1ea0719a80f2025-08-20T01:56:45ZengWileyVeterinary Medicine and Science2053-10952025-05-01113n/an/a10.1002/vms3.70402Successful Treatment With Intravenous Lipid Emulsion of Accidental Amantadine Overdose: A Case ReportBrett Hogberg0Kristen Marshall1Mark Vardanega2Ocean State Veterinary Specialist East Greenwich Rhode Island USAUniversity of Tennessee College of Veterinary Medicine Knoxville Tennessee USAOcean State Veterinary Specialist East Greenwich Rhode Island USAABSTRACT A 2.5‐year‐old, 4.9 kg, Chinese Crested was accidentally administered a dose of 43.5 mg/kg of amantadine, resulting in the rapid onset of tremors, agitation, vertical nystagmus, and lack of pupillary light reflex in one eye. After unsuccessful treatment with methocarbamol, a 1.5 mL/kg bolus of 20% intravenous lipid emulsion therapy was initiated followed by a 0.25 mL/kg/min continuous rate infusion. All clinical signs secondary to the amantadine toxicity resolved following intravenous lipid emulsion therapy and remained normal on 24 h, day 5, day 18, and day 50. This represents the first report of amantadine toxicity in a clinical setting and is the first case showing that intravenous lipid emulsion therapy could be an effective treatment for amantadine toxicity.https://doi.org/10.1002/vms3.70402amantadinecanineintoxicationintravenous lipid emulsion therapytremors
spellingShingle Brett Hogberg
Kristen Marshall
Mark Vardanega
Successful Treatment With Intravenous Lipid Emulsion of Accidental Amantadine Overdose: A Case Report
Veterinary Medicine and Science
amantadine
canine
intoxication
intravenous lipid emulsion therapy
tremors
title Successful Treatment With Intravenous Lipid Emulsion of Accidental Amantadine Overdose: A Case Report
title_full Successful Treatment With Intravenous Lipid Emulsion of Accidental Amantadine Overdose: A Case Report
title_fullStr Successful Treatment With Intravenous Lipid Emulsion of Accidental Amantadine Overdose: A Case Report
title_full_unstemmed Successful Treatment With Intravenous Lipid Emulsion of Accidental Amantadine Overdose: A Case Report
title_short Successful Treatment With Intravenous Lipid Emulsion of Accidental Amantadine Overdose: A Case Report
title_sort successful treatment with intravenous lipid emulsion of accidental amantadine overdose a case report
topic amantadine
canine
intoxication
intravenous lipid emulsion therapy
tremors
url https://doi.org/10.1002/vms3.70402
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