左旋甲狀腺素鈉
別名: Soloxine, Synthroid, Levosyn, Thyro-Tabs, Thyrosyn, Leventa, Thyro-L, Levothroid, Levoxyl, Tirosint
> **重要提示：** 規律給藥是關鍵！請每天在同一時間給予此藥物，最好是空腹或固定搭配同一種食物，因為食物會影響藥物的吸收量。 * **終身治療：** 甲狀腺機能低下通常是終身疾病。未經獸醫師同意，請勿自行停藥。 * **監測：** 您的寵物需要定期進行血液檢查，以確保劑量完全正確。劑量太少無法改善症狀，太多則會引起副作用。 * **注意過量跡象：** 如果您的寵物開始過度飲水或排尿、嚴重喘氣、表現出緊張或過度活躍，或者食慾極佳卻體重減輕，請立即聯繫您的獸醫師。
劑量必須由獸醫依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。
Veterinary professional? See the full dosing-by-species reference on VetSheet →
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
- Rifampin: Possible increased metabolism of thyroxine; dosage adjustments may be needed
- Sertraline: May increase levothyroxine requirements
- Sucralfate: May reduce levothyroxine absorption; separate doses by 4 hours
- Sympathomimetic Agents (epinephrine, norepinephrine): Levothyroxine can potentiate effects
- Warfarin: Thyroid hormones increase the catabolism of vitamin K-dependent clotting factors that may increase the anticoagulation effects
常見問題
左旋甲狀腺素鈉用於寵物有什麼用途？
> 重要提示： 規律給藥是關鍵！請每天在同一時間給予此藥物，最好是空腹或固定搭配同一種食物，因為食物會影響藥物的吸收量。 • 終身治療： 甲狀腺機能低下通常是終身疾病。未經獸醫師同意，請勿自行停藥。 • 監測： 您的寵物需要定期進行血液檢查，以確保劑量完全正確。劑量太少無法改善症狀，太多則會引起副作用。 • 注意過量跡象： 如果您的寵物開始過度飲水或排尿、嚴重喘氣、表現出緊張或過度活躍，或者食慾極佳卻體重減輕，請立即聯繫您的獸醫師。
左旋甲狀腺素鈉對我的寵物安全嗎？
劑量必須由獸醫依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。