Zonisamide
別名: Zonegran, Excegran
* **Strict Schedule**: Give this medication exactly as prescribed. Missed doses can lead to breakthrough seizures. * **Do Not Stop Abruptly**: Sudden discontinuation can cause severe "rebound" seizures. Always consult your veterinarian before changing the dose. * **Seizure Diary**: Keep a detailed log of any seizure activity (date, time, duration, severity) to help your veterinarian adjust the dose accurately. * **Side Effects**: Mild sleepiness or clumsiness may occur initially but usually improves as your pet adjusts to the medication. Contact your vet if your pet stops eating, vomits, or develops red/dry eyes.
劑量必須由獸醫按你寵物的個別情況決定。切勿在沒有獸醫指導下給予人類藥物或其他寵物的處方藥。
用途
- Epilepsy (anecdotal)
- Refractory to phenobarbital
- Epilepsy
- Epilepsy
- Refractory epilepsy (with phenobarbital)
- Monotherapy
- Add-on with phenobarbital
- Initial monotherapy
- Add-on agent
- Epilepsy
- Epilepsy (monotherapy or adjunctive)
給藥方式
可能的副作用
- Sedation (usually transient)
- Ataxia
- Inappetence / Anorexia
- Vomiting
- Diarrhea
- Somnolence
- Keratoconjunctivitis sicca (KCS) - theoretical risk due to sulfonamide structure
- Polyarthropathy or blood dyscrasias - theoretical risk due to sulfonamide structure
- Sedation
- Anorexia
- Keratoconjunctivitis sicca (KCS)
- Hepatotoxicity (rare)
- Metabolic acidosis
注意事項與禁忌
- Hypersensitivity to zonisamide
- Hypersensitivity to sulfonamide drugs
- Pregnancy (known teratogen in dogs)
- Hypersensitivity to sulfonamides
- Severe hepatic impairment
- > **Teratogenic Risk**: Zonisamide is a known teratogen in dogs. Doses of 10-30 mg/kg/day have caused ventricular septal defects, cardiomegaly, and valvular/arterial anomalies (threshold plasma level for malformation is 25 mcg/mL). Use in pregnant dogs carries significant risks. * **Sulfonamide Sensitivity**: Because it is a sulfonamide, monitor for idiosyncratic sulfonamide reactions (e.g., KCS, blood dyscrasias), though clinical reports in veterinary patients are currently rare. * Use with caution in nursing animals as it is unknown if it enters maternal milk.
藥物相互作用
- Phenobarbital: Increases the clearance of zonisamide. Repeated phenobarbital dosing decreases the bioavailability, peak concentrations, half-life, and AUC of zonisamide. This effect can persist up to 10 weeks after phenobarbital discontinuation. Higher zonisamide doses are typically required.
- Ketoconazole: May inhibit the hepatic metabolism of zonisamide, potentially increasing serum concentrations.
常見問題
Zonisamide用於寵物有甚麼用途？
* **Strict Schedule**: Give this medication exactly as prescribed. Missed doses can lead to breakthrough seizures. * **Do Not Stop Abruptly**: Sudden discontinuation can cause severe "rebound" seizures. Always consult your veterinarian before changing the dose. * **Seizure Diary**: Keep a detailed log of any seizure activity (date, time, duration, severity) to help your veterinarian adjust the dose accurately. * **Side Effects**: Mild sleepiness or clumsiness may occur initially but usually improves as your pet adjusts to the medication. Contact your vet if your pet stops eating, vomits, or develops red/dry eyes.
Zonisamide對我的寵物安全嗎？
劑量必須由獸醫按你寵物的個別情況決定。切勿在沒有獸醫指導下給予人類藥物或其他寵物的處方藥。
本文僅供一般健康教育，不能取代專業獸醫意見。如寵物身體不適，請諮詢獸醫。