Euthyrox 125 Tab

EUTHYROX 125 TABLET

EUTHYROX 125 TABLET, manufactured by MERCK LIMITED, is a synthetic thyroid hormone replacement medication.

Composition

• Active Ingredient: Each EUTHYROX 125 Tablet contains 125 micrograms of Levothyroxine Sodium, which is chemically identical to the thyroxine (T4) hormone naturally produced by the human thyroid gland.
• Inactive Ingredients: Include corn starch, croscarmellose sodium, gelatin, lactose monohydrate, and magnesium stearate.

Uses

EUTHYROX is primarily prescribed for the following conditions:

• Hypothyroidism: Treatment of an underactive thyroid gland where the body does not produce enough thyroid hormones.
• Goiter: Management of benign enlarged thyroid glands and prevention of goiter recurrence after surgery.
• Thyroid Cancer: As an adjunct to surgery and radioiodine therapy to suppress tumor growth in patients with thyrotropin-dependent well-differentiated thyroid cancer.

Dosage and Administration

EUTHYROX 125 Tablet is typically taken orally once daily on an empty stomach, usually 30 minutes to 1 hour before breakfast, with a full glass of water. Consistent daily timing is important. The dosage is highly individualized based on age, weight, medical condition, and regular monitoring of thyroid function tests. For infants or small children who cannot swallow whole tablets, the tablet can be crushed and mixed with 1 to 2 teaspoons (5 to 10 milliliters) of water and administered immediately. Do not mix with soy infant formula.

Side Effects

Common Side Effects (often indicative of a dose that is too high):

• Headache
• Nervousness, irritability, mood swings
• Sleeplessness (insomnia)
• Diarrhea
• Muscle spasm or tremors
• Weight loss
• Increased sweating, sensitivity to heat
• Menstrual irregularities (in women)
• Skin rash
• Palpitations, fast/pounding/irregular heartbeat
• Shortness of breath
• Temporary hair loss may occur during the first few months of treatment.

Serious Side Effects (seek immediate medical attention if experienced):

• Symptoms of very high thyroid hormone levels such as severe fast heartbeat, chest pain, confusion, or seizures.

Precautions

• Allergies and Medical History: Inform your doctor about any allergies to levothyroxine or other ingredients, and your medical history, especially concerning increased thyroid hormones (thyrotoxicosis), decreased adrenal gland function, heart disease (e.g., coronary artery disease, irregular heartbeat, high blood pressure), or diabetes.
• Not for Weight Loss: EUTHYROX should not be used for weight reduction or treatment of obesity.
• Drug and Food Interactions:
  • Avoid taking with calcium, iron supplements, or antacids (especially those containing magnesium or aluminum) within at least 4 hours, as they can interfere with absorption.
  • Foods like soybean flour, cottonseed meal, cabbage, cauliflower, walnuts, dietary fiber, calcium, and calcium-fortified juices may affect its absorption; avoid intake within several hours of dosing.
  • May affect blood sugar control in diabetic patients, potentially requiring adjustments to antidiabetic medication.
  • Can intensify the effect of oral anticoagulants (e.g., warfarin), increasing the risk of bleeding; close monitoring and dose adjustment may be needed.
• Specific Patient Populations:
  • Elderly or Patients with Heart Disease: May require lower starting doses and slower dose adjustments.
  • Pregnancy and Breastfeeding: Dosage adjustments may be necessary during pregnancy, and TSH levels should be monitored. Levothyroxine passes into breast milk but is unlikely to harm a nursing infant.
• Bone Health: Long-term use may increase the risk of osteoporosis; your doctor may suggest calcium or Vitamin D supplements.

Storage

Store EUTHYROX tablets at room temperature, generally below 25°C or 30°C. Keep the medication away from excessive light and moisture, and store it in the original blister and outer carton to protect it from light. Keep all medications out of the reach of children and pets.

Euthyrox 125 mcg tablets contain levothyroxine sodium, a synthetic thyroid hormone used to treat conditions related to an underactive thyroid gland. It is a replacement for the natural hormone thyroxine (T4) that your thyroid gland would normally produce.

Here are some frequently asked questions about Euthyrox 125 tablets:

What is Euthyrox 125 used for?

Euthyrox 125 is primarily used to treat hypothyroidism, a condition where the thyroid gland doesn't produce enough thyroid hormones. It helps restore normal thyroid hormone levels, alleviating symptoms such as fatigue, weight gain, and dry skin. It can also be used as an adjunct to surgery and radioiodine therapy in managing certain types of thyroid cancer. It is not intended for weight loss or the treatment of benign thyroid nodules in iodine-sufficient patients.

How does Euthyrox 125 work?

Euthyrox 125 contains levothyroxine, which is a man-made version of thyroxine (T4), a hormone naturally produced by your thyroid gland. Once in the body, levothyroxine is converted into tri-iodothyronine (T3) in various organs. These thyroid hormones play a crucial role in regulating your body's metabolism, energy levels, heart rate, and body temperature. By replacing the missing thyroid hormone, Euthyrox helps maintain these essential bodily functions.

What is the usual dosage for Euthyrox 125?

The dosage of Euthyrox 125 is highly individualized and determined by your doctor based on your age, body weight, overall health, and thyroid hormone levels (specifically TSH). For healthy, non-elderly adults, the average full replacement dose is approximately 1.6 mcg per kilogram of body weight per day (e.g., 100-125 mcg/day for a 70 kg adult). The medication is typically taken once daily on an empty stomach, 30 to 60 minutes before breakfast. Doses are adjusted gradually every 4 to 8 weeks as needed, based on regular blood tests and clinical response. Elderly patients or those with pre-existing heart conditions may start with a lower dose.

What are the possible side effects of Euthyrox 125?

Euthyrox 125 is generally well-tolerated. Most side effects occur if the dose is too high and are similar to symptoms of an overactive thyroid. These can include headache, nervousness, weight loss, insomnia, shortness of breath, diarrhea, increased appetite, heat intolerance, irregular heartbeats (palpitations), tremors, muscle weakness, irritability, and menstrual irregularities. If you experience these symptoms, your doctor may need to adjust your dosage. Seek immediate medical attention if you experience very serious effects such as severe chest pain, a fast/pounding/irregular heartbeat, swelling in your hands/ankles/feet, or seizures.

Is Euthyrox 125 safe during pregnancy or breastfeeding?

Yes, Euthyrox 125 is considered safe and essential to continue during pregnancy. Untreated hypothyroidism during pregnancy can lead to complications for both the mother and the baby. Your doctor will likely monitor your thyroid hormone levels frequently during pregnancy and may adjust your Euthyrox dosage to ensure optimal levels. It is also safe to take while breastfeeding, as only very small, clinically insignificant amounts of levothyroxine pass into breast milk.

Can Euthyrox 125 be taken with other medications?

Euthyrox 125 can interact with several medications and supplements, potentially affecting its absorption or effectiveness. It is crucial to inform your doctor and pharmacist about all prescription, over-the-counter medications, vitamins, and herbal products you are taking. To minimize interactions, Euthyrox should be taken at least 4 hours apart from certain medications, including antacids (containing aluminum or magnesium), iron supplements, calcium supplements, and some cholesterol-lowering medicines (e.g., cholestyramine, colestipol). If you have diabetes, your antidiabetic medication dosage may need adjustment, as Euthyrox can affect blood glucose control.

What precautions should be taken when taking Euthyrox 125?

Always take Euthyrox 125 exactly as prescribed by your doctor. It should be taken as a single daily dose on an empty stomach, preferably 30 to 60 minutes before breakfast, with a full glass of water. Avoid taking it with milk, dairy products, or soy-based products, as these can interfere with its absorption. Regular blood tests are vital to monitor your thyroid hormone levels and ensure your dosage is correct. Inform your doctor if you have any heart conditions, diabetes, adrenal insufficiency, or a history of seizures, as these conditions may require special monitoring or dose adjustments.

What happens if a dose of Euthyrox 125 is missed?

If you miss a dose of Euthyrox 125, take it as soon as you remember. However, if it is almost time for your next scheduled dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to compensate for a missed one. If you frequently miss doses or miss several doses in a row, contact your healthcare professional for advice.

How should Euthyrox 125 be stored?

Euthyrox 125 tablets should be stored at room temperature, typically between 20°C to 25°C (68°F to 77°F), with excursions permitted between 15°C to 30°C (59°F to 86°F). It is important to protect the tablets from light and moisture. Keep the tablets in their original blister packaging or outer carton until you are ready to use them to maintain their potency and ensure effective treatment. Ensure they are kept out of reach of children and pets.