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    A 26-year-old pony mare (ca. 180 kg bodyweight) was presented as an emergency because it had erroneously received 110 times its standard dose of pergolide (Prascend) per os approximately 4 hours earlier. Clinical examination initially was normal except tachycardia of 52 beats/min. The pony was treated symptomatically with paraffin oil and activated charcoal per nasogastric tube to prevent further systemic absorption and accelerate intestinal excretion of the pergolide. Furthermore, the pony received 400 mg of dopamine antagonist azaperone (Stresnil) intramuscularly (i.m.) followed by 80 mg every 6 hours twice i.m. and then 60 mg every 6 hours twice i.m. In addition, 40 mg verapamil (Verapamil-ratiopharm) was given every 4 hours per os for two days, followed by 40 mg every 6 hours for another 5 days. The pony was closely monitored clinically. It remained bright and alert with heart rate returning to normal within one day. The only abnormalities noticed 24 hours after ingestion of the pergolide overdose were a decreased appetite and anxiety, possibly a dopaminergic central nervous effect. Over the next days, appetite returned and anxiety disappeared. Overdosing pergolide is considered very rare and to the authors' knowledge this is the first report with a severe overdose of pergolide (Prascend). As accidental drug overdosing is a common error in medicine, it is important to know about possible side effects and how to react in cases like this. Copyright © 2020 Elsevier Inc. All rights reserved.


    Bianca Schwarz, Pit Ihry. Accidental Overdose of Pergolide (Prascend) Followed by Loss of Appetite, Tachycardia, and Behavioral Abnormalities in a Pony Mare. Journal of equine veterinary science. 2020 Sep;92:103181

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    PMID: 32797773

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