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Tirosint (Levothyroxine)
| Levothyroxine Sodium (Generic) Levothyroxine Sodium | ||||||
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Shipped from Mauritius | ||||||
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| Select product strength & quantity:
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| Select product strength & quantity:
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| Thyrox (Generic) Levothyroxine | ||||||
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Shipped from Mauritius | ||||||
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Who is the product for? YouOtherAdd Family Member/PetYou must be logged in to add additional members to the order. Don't have an account? or Add Family Member/PetSign inTo continue, please enter your email address and password that you use for your account. | ||||||
General Medication Fact Sheet for Tirosint
| Field | Information |
|---|---|
| Medication Name | Tirosint |
| Generic Name | Levothyroxine Sodium |
| Purpose | Thyroid hormone replacement therapy for hypothyroidism |
| Mechanism of Action | Replaces or supplements thyroxine (T4), which is converted to triiodothyronine (T3) and binds to thyroid hormone receptors, regulating gene expression and metabolism. |
| Dosage Forms | Oral capsules |
| Available Strengths | 13 mcg, 25 mcg, 37.5 mcg, 50 mcg, 75 mcg, 88 mcg, 100 mcg, 112 mcg, 125 mcg, 137 mcg, 150 mcg, 175 mcg, 200 mcg |
| Dosage Frequency | Once daily, typically in the morning on an empty stomach |
| Common Side Effects | Symptoms of hyperthyroidism: palpitations, rapid heart rate, weight loss, anxiety, tremors, sweating |
| Serious Side Effects | Cardiac arrhythmias, angina, myocardial infarction, osteoporosis (with long-term use) |
| Drug Interactions | Warfarin, digoxin, iron supplements, calcium carbonate, aluminum hydroxide, bile acid sequestrants (cholestyramine, colestipol), proton pump inhibitors (PPIs) |
| Important Notes | Take on an empty stomach at least 30-60 minutes before breakfast. Maintain consistent timing. Do not switch between different brands of levothyroxine without consulting your doctor. |
| Storage | Store at room temperature away from moisture and light |
| Missed Dose | Take as soon as you remember unless it is close to the time for your next dose. Do not double the dose. |
| Alternatives | Synthroid (levothyroxine), Levoxyl (levothyroxine), Unithroid (levothyroxine), Liothyronine (Cytomel) |
Tirosint Alternatives
| Medication | Mechanism of Action | Notes |
|---|---|---|
| Synthroid (levothyroxine) | Synthetic T4 replacement | A commonly prescribed brand of levothyroxine. |
| Levoxyl (levothyroxine) | Synthetic T4 replacement | Another brand of levothyroxine. |
| Unithroid (levothyroxine) | Synthetic T4 replacement | Another brand of levothyroxine. |
| Liothyronine (Cytomel) | Synthetic T3 replacement | Contains T3 only; may be used in combination with T4. |
Tirosint Side Effects
| Common Side Effects | Serious Side Effects |
|---|---|
| Palpitations | Cardiac arrhythmias |
| Rapid heart rate | Angina (chest pain) |
| Weight loss | Myocardial infarction (heart attack) |
| Anxiety | Osteoporosis (with long-term use) |
| Tremors | Seizures |
| Sweating | Adrenal insufficiency |
| Insomnia | Thyroid storm (rare but life-threatening) |
Tirosint Dosage Guide
| Condition | Starting Dose | Maintenance Dose | Administration Notes |
|---|---|---|---|
| Hypothyroidism | Typically 1.6 mcg/kg/day | Individualized based on TSH levels and clinical response. | Take on an empty stomach 30-60 minutes before breakfast. |
| Subclinical Hypothyroidism | Lower doses may be used, e.g., 25-50 mcg/day | Individualized based on TSH levels and clinical response. | Take on an empty stomach 30-60 minutes before breakfast. |
| Thyroid Cancer (suppression) | Variable, higher doses often used | Individualized based on TSH target levels. | Take on an empty stomach 30-60 minutes before breakfast. |
