Synthroid: Precise Thyroid Hormone Replacement Therapy
Synthroid
| Product dosage: 100mcg | |||
|---|---|---|---|
| Package (num) | Per pill | Price | Buy |
| 100 | 0.50 $ | 50.31 $ 50.31 $ (0%) | 🛒 Add to cart |
| 200 | 0.41 $ | 100.62 $ 81.90 $ (19%) | 🛒 Add to cart |
| 300 | 0.38 $
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| Product dosage: 125mcg | |||
|---|---|---|---|
| Package (num) | Per pill | Price | Buy |
| 120 | 0.48 $ | 57.33 $ (0%) | 🛒 Add to cart |
| 240 | 0.39 $ | 114.66 $ 93.60 $ (18%) | 🛒 Add to cart |
| 360 | 0.36 $
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| Product dosage: 150mcg | |||
|---|---|---|---|
| Package (num) | Per pill | Price | Buy |
| 100 | 0.64 $ | 64.35 $ (0%) | 🛒 Add to cart |
| 200 | 0.51 $ | 128.70 $ 102.96 $ (20%) | 🛒 Add to cart |
| 300 | 0.47 $
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| Product dosage: 200mcg | |||
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| Package (num) | Per pill | Price | Buy |
| 100 | 0.80 $ | 79.56 $ (0%) | 🛒 Add to cart |
| 200 | 0.70 $ | 159.12 $ 140.40 $ (12%) | 🛒 Add to cart |
| 300 | 0.66 $
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| Product dosage: 25mcg | |||
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| 240 | 0.25 $ | 59.67 $ (0%) | 🛒 Add to cart |
| 360 | 0.19 $
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| Product dosage: 50mcg | |||
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| Package (num) | Per pill | Price | Buy |
| 240 | 0.28 $ | 67.86 $ (0%) | 🛒 Add to cart |
| 360 | 0.21 $
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| Product dosage: 75mcg | |||
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| 240 | 0.29 $ | 69.03 $ (0%) | 🛒 Add to cart |
| 360 | 0.27 $
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Synonyms | |||
Synthroid (levothyroxine sodium) is the leading prescription medication specifically formulated to treat hypothyroidism. It is a synthetic form of the T4 hormone, identical to what a healthy thyroid gland produces, ensuring consistent and reliable hormone levels. By restoring the body’s natural thyroid balance, it effectively alleviates the debilitating symptoms of an underactive thyroid, allowing patients to regain their energy, mental clarity, and overall metabolic health. This therapy is a cornerstone of endocrine care, trusted by physicians for decades due to its proven efficacy and safety profile when used as directed.
Features
- Contains the active ingredient levothyroxine sodium, a synthetic version of the endogenous thyroid hormone thyroxine (T4).
- Manufactured to exacting standards for consistent potency, purity, and quality in every dose.
- Available in a wide range of 12 strengths (from 25 mcg to 300 mcg) and multiple formulations (tablets, oral solution) for precise, individualized dosing.
- Features color-coded tablets for easy strength identification, reducing the potential for dosing errors.
- The oral solution provides a precise, consistent alternative for patients with difficulty swallowing tablets or those requiring very specific micro-dosing.
Benefits
- Effectively reverses the symptoms of hypothyroidism, including fatigue, weight gain, depression, and brain fog.
- Helps restore a normal metabolic rate, supporting healthy weight management and energy levels.
- Promotes improved cardiovascular health by helping to normalize cholesterol levels and heart function.
- Contributes to enhanced mental well-being and cognitive function, alleviating symptoms of depression and poor concentration.
- Supports healthy hair, skin, and nails, which are often adversely affected by thyroid hormone deficiency.
- Provides a predictable and stable hormonal foundation, allowing for consistent daily functioning and long-term health management.
Common use
Synthroid is primarily indicated for the treatment of hypothyroidism, a condition characterized by an underactive thyroid gland that cannot produce sufficient thyroid hormone. It is also used as replacement therapy in cases of thyroid hormone deficiency resulting from surgery, radiation treatment, or other causes. Furthermore, it is employed as a suppressive therapy in the management of certain types of thyroid cancers and goiters, helping to control growth and recurrence by suppressing Thyroid-Stimulating Hormone (TSH) secretion from the pituitary gland.
Dosage and direction
The dosage of Synthroid is highly individualized and must be determined by a healthcare professional based on the patient’s age, body weight, underlying medical condition, severity of hypothyroidism, and laboratory findings (primarily TSH levels). It is critically important to take Synthroid on an empty stomach, at least 30 to 60 minutes before breakfast, with a full glass of water. Adherence to the prescribed dosage and administration instructions is paramount for achieving optimal therapeutic results and maintaining stable hormone levels. Dosage adjustments should never be made without consulting a physician. Regular monitoring of TSH levels is required to ensure the dosage remains appropriate over time.
Precautions
Patients should inform their doctor of any other medical conditions, especially heart disease, diabetes, adrenal or pituitary gland problems, or blood clotting disorders. Thyroid hormone therapy can exacerbate symptoms of underlying heart disease, requiring careful monitoring. It is crucial to disclose all other medications, vitamins, and supplements being taken, as many can interact with levothyroxine absorption and efficacy. Regular follow-up appointments and blood tests are essential to monitor therapy effectiveness and adjust dosage as needed. Pregnant or breastfeeding women should not adjust their dosage without specific instruction from their obstetrician and endocrinologist, as thyroid requirements often increase during pregnancy.
Contraindications
Synthroid is contraindicated in patients with uncorrected adrenal insufficiency, untreated thyrotoxicosis (overactive thyroid), and acute myocardial infarction. It is also contraindicated in individuals with a known hypersensitivity to any of the ingredients in the formulation. Therapy should not be initiated in patients who have recently experienced a heart attack due to the increased risk of cardiac complications.
Possible side effect
When taken at the correct dosage, Synthroid generally has few side effects as it is replacing a hormone the body lacks. Side effects are typically signs of excessive dosing (hyperthyroidism) and may include:
- Chest pain, palpitations, rapid or irregular heartbeat, increased blood pressure.
- Headaches, tremors, nervousness, irritability, insomnia.
- Excessive sweating, heat intolerance, fever.
- Increased appetite accompanied by weight loss.
- Diarrhea, abdominal cramps.
- Menstrual irregularities.
- Temporary hair loss (often during the initial months of therapy or after a dosage adjustment). Any suspected side effects should be reported to a healthcare provider immediately.
Drug interaction
Synthroid has a high potential for drug interactions that can affect its absorption or action. Key interactions include:
- Antacids, Calcium Carbonate, Iron Supplements, Proton Pump Inhibitors: Can significantly decrease absorption. Administer at least 4 hours apart.
- Estrogen and Oral Contraceptives: May increase the requirement for levothyroxine.
- Blood Thinners (e.g., Warfarin): Levothyroxine can potentiate their effect, increasing the risk of bleeding. Close monitoring of INR is required.
- Diabetes Medications (Insulin, Oral Hypoglycemics): Thyroid hormone may affect blood glucose control, necessitating adjustment of diabetes medication.
- Seizure Medications (e.g., Phenytoin, Carbamazepine): Can increase the metabolism of levothyroxine.
- Cholestyramine, Colestipol: Bind to levothyroxine in the gut, impairing absorption. Administer at least 4 hours apart. A complete list of all medications and supplements must be provided to the prescribing physician.
Missed dose
If a dose is missed, it should be taken as soon as remembered on the same day. If it is almost time for the next scheduled dose, skip the missed dose and resume the usual dosing schedule. Do not take a double dose to make up for a missed one. Consistency is key, so patients should try to establish a daily routine to avoid missed doses.
Overdose
Symptoms of overdose are those of hyperthyroidism or thyroid storm and constitute a medical emergency. They include: rapid or irregular heartbeat, chest pain, confusion, agitation, seizures, shortness of breath, coma, and shock. If an overdose is suspected, immediate medical attention must be sought. Treatment is supportive and aimed at reducing the effects of the excessive thyroid hormone.
Storage
Store Synthroid tablets or oral solution at room temperature (20°C to 25°C or 68°F to 77°F) in the original container. Keep the container tightly closed to protect from light and moisture. Do not store in a bathroom cabinet where humidity is high. Keep all medications out of the reach of children and pets. Do not use after the expiration date printed on the packaging.
Disclaimer
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or medication. Never disregard professional medical advice or delay in seeking it because of something you have read here. Individual patient needs and responses to therapy vary.
Reviews
“After years of unexplained fatigue and weight gain, my diagnosis of hypothyroidism and starting on Synthroid was life-changing. With consistent dosing and regular blood work, my energy levels are back to normal, and I feel like myself again. It requires discipline to take it on an empty stomach, but the results are worth it.” – Sarah K.
“As an endocrinologist, I have prescribed Synthroid for over 20 years. Its consistent manufacturing and wide range of strengths allow me to fine-tune therapy for each patient precisely. The key to success is patient education on proper administration and the importance of follow-up monitoring.” – Dr. Evan R., MD
“It took a few dosage adjustments to get my levels just right, but once we did, the brain fog lifted completely. I appreciate that it’s a hormone my body should be making anyway. I haven’t experienced any side effects on my stable dose.” – Michael T.