EPHEDRINE, PSEUDOEPHEDRINE TOXICITY, MA HUANG, EPHEDRA POISONING
 
Description    Dogs, cats, and pot-bellied pigs have been poisoned by overdosages of the 'herbal' supplement Ma Huang, which contains ephedra. Phenylephrine, ephedrine, and phenylpropanolamine are sympathomimetics used as decongestants by people that can be toxic to pets.
 
Species   Canine, Feline, Porcine
 
Signs   Abnormal behavior, aggression, changing habits, Abnormal pupillary response to light, Anorexia, Arrhythmia, Bradycardia, Constant or increased vocalization, Disoriented, Dullness, Excitement, Fever, Generalized weakness, Head shaking, Hyperesthesia, Increased respiratory rate, Mydriasis, Propulsion, Seizures or syncope, Sinus arrhythmia, Sinus tachycardia, Sudden death, Tachycardia, Trembling, Tremor, Vomiting or regurgitation
 
References   Kang M-H. Application of carvedilol in a dog with pseudoephedrine toxicosis-induced tachycardia. Can Vet J 2012;53:783 [Web Reference]
Flood AA. The Poison-Proof Practice. Clin Tech Small Anim Pract 2006;21:164 [Web Reference]
Thursby-Pelham C. Peculiar poisonings in pets. In Practice 1996;478
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