Levothyroxine Sodium
別名: Soloxine, Synthroid, Levosyn, Thyro-Tabs, Thyrosyn, Leventa, Thyro-L, Levothroid, Levoxyl, Tirosint
> **Important:** Consistency is key! Give this medication at the same time every day, ideally on an empty stomach or consistently with the same type of food, as food can affect how much drug is absorbed. * **Lifelong Therapy:** Hypothyroidism is typically a lifelong condition. Do not stop giving the medication without consulting your veterinarian. * **Monitoring:** Your pet will need periodic blood tests to ensure the dose is exactly right. Too little won't fix the symptoms, and too much can cause side effects. * **Watch for Overdose Signs:** Contact your veterinarian if your pet starts drinking or urinating excessively, panting heavily, acting nervous or hyperactive, or losing weight despite a ravenous appetite.
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
- Hypothyroidism
- Post thyroidectomy
- Hypothyroidism
- Adjunctive treatment of equine metabolic syndrome
- Hypothyroidism
- Hypothyroidism
- Hypothyroidism
- Hypothyroidism
- Myxedema coma
- Hypothyroidism in tortoises
給藥方式
可能的副作用
- Tachycardia
- Polyphagia
- Polyuria/Polydipsia (PU/PD)
- Excitability
- Nervousness
- Excessive panting
- Apathy or listlessness (seen in some cats)
注意事項與禁忌
- Acute myocardial infarction
- Thyrotoxicosis
- Untreated adrenal insufficiency
- Use with caution and at a lower initial dosage in patients with concurrent hypoadrenocorticism (treated), cardiac disease, diabetes, or in elderly patients. High fiber diets may reduce absorption. Hypothyroid dogs can have decreased GFR; restoration to a euthyroid state can increase GFR and reduce serum creatinine levels. Numerous drugs can affect thyroid function tests (T4, T3, TSH), so evaluate lab results accordingly.
藥物相互作用
- Amiodarone: May decrease the metabolism of T4 to T3
- Antacids, Oral: May reduce levothyroxine absorption; separate doses by 4 hours
- Antidepressants, Tricyclic/Tetracyclic: Increased risk for CNS stimulation and cardiac arrhythmias
- Antidiabetic Agents (insulin, oral agents): Levothyroxine may increase requirements for insulin or oral agents
- Cholestyramine: May reduce levothyroxine absorption; separate doses by 4 hours
- Corticosteroids (high dose): Decreased conversion of T4 to T3
- Digoxin: Potential for reduced digoxin levels
- Ferrous Sulfate: May reduce levothyroxine absorption; separate doses by 4 hours
- Ketamine: May cause tachycardia and hypertension
- Phenobarbital: Possible increased metabolism of thyroxine; dosage adjustments may be needed
- Propylthiouracil: Decreased conversion of T4 to T3
常見問題
Levothyroxine Sodium用於寵物有甚麼用途？
> **Important:** Consistency is key! Give this medication at the same time every day, ideally on an empty stomach or consistently with the same type of food, as food can affect how much drug is absorbed. * **Lifelong Therapy:** Hypothyroidism is typically a lifelong condition. Do not stop giving the medication without consulting your veterinarian. * **Monitoring:** Your pet will need periodic blood tests to ensure the dose is exactly right. Too little won't fix the symptoms, and too much can cause side effects. * **Watch for Overdose Signs:** Contact your veterinarian if your pet starts drinking or urinating excessively, panting heavily, acting nervous or hyperactive, or losing weight despite a ravenous appetite.
Levothyroxine Sodium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。