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  • Title: Accidental ingestion of acyclovir in dogs: 105 reports.
    Author: Richardson JA.
    Journal: Vet Hum Toxicol; 2000 Dec; 42(6):370-1. PubMed ID: 11111948.
    Abstract:
    Acyclovir is an antiviral agent that causes termination of viral DNA synthesis by inhibiting viral reverse transcriptase. Acyclovir is used therapeutically to treat herpes simplex, cytomegalovirus, Epstein-Barr, and varicella-Zoster. Although acyclovir is thought to be low in toxicity, it has caused an obstructive nephropathy from accumulation of crystals in renal tissue. A retrospective review (January 1995 through March 2000) was conducted of acyclovir toxicoses in dogs reported to the ASPCA National Animal Poison Control Center. Of 105 ingestions, 10 were considered cases of acyclovir toxicosis. The most common signs seen were vomiting, diarrhea, anorexia, and lethargy. Ingested dosages ranged from 40 to 2195 mg/kg bw. Polyuria and polydipsia were reported in I dog. In 6/10 cases, signs developed within 3 h of ingestion. Treatment included standard decontamination procedures, (ie induction of emesis, administration of activated charcoal), diuresis, and supportive care.
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