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Fish Zole (Metronidazole) 250 mg, 30 Tablets

Fish Zole (Metronidazole) 250 mg, 30 Tablets

Item #: 1013962
Retail: $52.99 Price: $37.65
Save: $15.34 (28.9%)

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Fish Zole is useful in the control of "Hole-in-the-Head" and "Angle Problems" in Cichlid and Discus. For ornamental and aquarium fish only.


Trade and Other Names

Flagyl; many brands available

Drug Class

Antibacterial, antiparasitic, antiprotozoal

Mechanism of Action and Clinical Use

Disrupts DNA in organism via reaction with intracellular metabolite. Action is specific for anaerobic bacteria and protozoa. Resistance is rare. Active against some protozoa, including Giardia organisms; however, other drugs such as fenbendazole have been used for Giardia infection.

Adverse Effects

Most severe adverse effect is dose-related CNS toxicity. High doses have caused lethargy, CNS depression, ataxia, vomiting, and weakness. Metronidazole may be mutagenic.

Contraindications, Precautions, and Drug Interactions

Fetal abnormalities have not been demostrated in animals with recommended doses, but use with caution during pregnancy.

Instructions for Use

Metronidazole is one of the most commonly used drugs for anaerobic infections. It is effective for giardiasis; other drugs used for Giardia infection include albendazole, fenbendazole, and quinacrine. Maximum dose that should be administered is 50-65 mg/kg,q24h, in any species. Tablets have been broken or crushed for oral administration to cats; however, cats find these unpalatable.

Small Animal Dosage Information

Anaerobic Infection:

Dogs: 15 mg/kg,q12h, PO; or 12 mg/kg, q8h, PO.

Cats: 10-25 mg/kg, q24h, PO.

Giardia Infection:

Dogs: 12-15 mg/kg,q12h, PO, x 8 days.

Cats: 17 mg/kg (1/3 tablet/cat), q24h, PO, x 8 days

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This information is for general reference only and should not be used for the diagnosis or treatment of any condition of your pet. Because is intended as a general reference, this information may not include all possible uses, precautions, directions, reactions (including allergic), drug interactions, or withdrawal times. Always consult your local veterinarian and have your pet examined for any advice concerning the diagnosis and treatment of your pet, including which products and doses are most appropriate. Any trademarks are the property of their respective owners. VetDepot is not a pharmacy. All prescription products are dispensed by our Pharmacy Partner.

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