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Topiramate

Prescription

Anticonvulsant (Sulfamate-Substituted Monosaccharide)

Last reviewed 21 Apr 2026 · PetCare.AI Editorial Team

Species

Dog, Cat

Brands

1 available

Interactions

1 documented

Formulations

Mechanism of action

Multiple mechanisms: blocks voltage-gated sodium channels, enhances GABA-A receptor activity, inhibits AMPA/kainate glutamate receptors, and weakly inhibits carbonic anhydrase. Broad-spectrum anticonvulsant for refractory epilepsy.

At a glance

Class

Anticonvulsant (Sulfamate-Substituted Monosaccharide)

Schedule

Prescription

Storage

Store at room temperature below 25°C, protect from moisture

Dosing

🐕

Dog

Used as adjunctive anticonvulsant for refractory epilepsy

Dose

2–10 mg/kg

Route

Frequency

q8–12h

🐈

Cat

Very limited feline data

Dose

5–10 mg/kg

Route

Frequency

q12h

Educational reference only

This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet. Find a vet near you →

Formulations

💊

Other — 2

Strength

—

Strength

—

Storage

Store at room temperature below 25°C, protect from moisture

Safety

Monitoring parameters

Seizure frequencyBody weightBlood gas (metabolic acidosis)Urinalysis (crystals/calculi)Serum bicarbonate

Educational reference only

Interactions

Moderate — 1

Phenobarbital

moderate

Phenobarbital induces CYP3A4, increasing topiramate clearance. May need higher topiramate dose for seizure control.

Management: Monitor seizure frequency. Adjust topiramate dose as needed.

Educational reference only

Brands

Other markets

Topamax

FAQs

Frequently asked questions

›What is Topiramate?

Topiramate is a anticonvulsant (sulfamate-substituted monosaccharide) used in pets. Multiple mechanisms: blocks voltage-gated sodium channels, enhances GABA-A receptor activity, inhibits AMPA/kainate glutamate receptors, and weakly inhibits carbonic anhydrase. Broad-spectrum anticonvulsant for refractory epilepsy.

›What is Topiramate used for in pets?

Topiramate is used in veterinary medicine for: Used as adjunctive anticonvulsant for refractory epilepsy; Very limited feline data.

›What is the Topiramate dose for dogs?

For dogs, Topiramate is typically dosed as follows — Used as adjunctive anticonvulsant for refractory epilepsy: 2–10 mg/kg PO q8–12h. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.

›What is the Topiramate dose for cats?

For cats, Topiramate is typically dosed as follows — Very limited feline data: 5–10 mg/kg PO q12h. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.

›Does Topiramate need a prescription?

Yes. Topiramate is a prescription medication and should only be administered under veterinary supervision.

Educational reference only

References

The PetCare.AI drug reference is built from 13 authoritative sources cited across 580 drug monographs.

Textbooks & handbooks — 5

Plumb's Veterinary Drug Handbook
Withrow & MacEwen's Small Animal Clinical Oncology
Merck Veterinary Manual
NRC Nutrient Requirements of Dogs and Cats
Veterinary Pharmacology and Therapeutics (Riviere & Papich)

Clinical guidelines & consensus — 4

ASPCA Animal Poison Control Center Guidelines
AAHA Diabetes Management Guidelines
ASPCA Poison Control Guidelines
RECOVER CPR Guidelines

Journals & peer-reviewed studies — 2

EPIC Study (J Vet Intern Med 2016)
JVIM FAT CAT Study

Regulatory & approvals — 1

CDSCO Veterinary Drug Approval Registry (1969–2026)

Databases — 1

Washington State University VCPL MDR1 Database

Related medicines

Other medicines in the same class (Anticonvulsant).

Felbamate

Blocks NMDA receptors (glycine binding site), inhibits voltage-gated sodium channels, and potentiates GABA-A receptor function. Unique triple mechanism provides broad-spectrum anticonvulsant activity for refractory epilepsy.

dogcat