Product image of Levotiroxina Teva (Levothyroxine) supplied by GNH India

Levotiroxina Teva

Active Ingredient:
Levothyroxine
Origin:
EU

Levotiroxina Teva (Levothyroxine)

Levothyroxine, the active ingredient in Levotiroxina Teva, is a Thyroid hormone presented as an oral tablet for oral use. It replaces deficient thyroid hormone and restores normal metabolic activity in patients with hypothyroidism and related conditions.

GNH India supplies Levotiroxina Teva as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Teva Italia S.R.L.

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Indications & Clinical Uses

Levotiroxina Teva provides thyroid hormone replacement for disorders of thyroid hormone deficiency.

  • Hypothyroidism: restores normal thyroid hormone levels and metabolic function.
  • Thyroid hormone replacement after thyroidectomy: supplies the hormone that the removed gland would have produced.
  • Goiter: reduces gland enlargement by normalising circulating hormone levels.
  • Congenital hypothyroidism: supplies essential hormone to infants with absent or insufficient thyroid function.

How It Works

  • Levothyroxine is a synthetic form of the endogenous hormone thyroxine (T4). After oral absorption, it enters the bloodstream and binds to nuclear thyroid hormone receptors in target cells, regulating gene transcription that controls basal metabolic rate, protein synthesis, and growth. By mimicking natural T4, it compensates for deficient endogenous production and normalises systemic metabolic activity.

Side Effects

Levotiroxina Teva may cause a range of adverse reactions, most of which are dose‑related and reversible upon adjustment.

Common Side Effects

  • Headache: mild to moderate intensity.
  • Fatigue or weakness: especially during dose titration.
  • Palpitations: sensation of rapid or irregular heartbeat.
  • Weight loss: due to increased metabolic rate.
  • Gastrointestinal upset: nausea, vomiting or abdominal discomfort.
  • Insomnia: difficulty falling or staying asleep.

Serious or Rare Side Effects

  • Cardiac arrhythmias: especially in patients with pre‑existing heart disease.
  • Osteoporosis: prolonged excess dosing may reduce bone density.
  • Hyperthyroidism symptoms: tremor, heat intolerance, anxiety.
  • Allergic reactions: rash, pruritus, angioedema.
  • Myocardial infarction: rare, associated with overtreatment.
  • Severe bone fractures: linked to long‑term overtreatment.

Precautions & Warnings

Levotiroxina Teva requires careful monitoring and individualized dosing.

  • Dose adjustment: titrate based on thyroid function tests and clinical response.
  • Cardiovascular disease: use cautiously in patients with angina, arrhythmias or recent myocardial infarction.
  • Elderly patients: start with lower doses to avoid overtreatment.
  • Pregnancy and lactation: assess risk‑benefit; dose may need adjustment.
  • Drug interactions: review concomitant medications that affect thyroid hormone levels.
  • Store at ambient temperature: keep below 25 °C, in the original container, protected from moisture and light.

Avoid Interactions

Levotiroxina Teva can interact with several medicines that alter its absorption or metabolism.

Major Interactions (Avoid)

  • Levothyroxine with calcium or iron supplements: markedly reduces absorption; separate administration by at least 4 hours.
  • Levothyroxine with antacids containing aluminum or magnesium: significantly impairs absorption; avoid concurrent dosing.
  • Levothyroxine with amiodarone: may cause thyroid dysfunction; monitor thyroid function closely.

Moderate Interactions (Monitor Closely)

  • Levothyroxine with warfarin: may enhance anticoagulant effect; check INR regularly.
  • Levothyroxine with carbamazepine, phenytoin, or rifampin: increase metabolism leading to reduced efficacy; adjust dose as needed.
  • Levothyroxine with estrogen therapy or oral contraceptives: may increase thyroid‑binding globulin, requiring dose adjustment.

Frequently Asked Questions

Levotiroxina Teva is prescribed for patients with hypothyroidism, for thyroid hormone replacement after thyroidectomy, for management of goiter, and for congenital hypothyroidism in newborns. In each case the medication supplies synthetic thyroxine (T4) to restore normal hormone levels.

Levothyroxine is a synthetic form of the natural thyroid hormone T4. After oral absorption, it binds to nuclear thyroid hormone receptors, influencing gene transcription that regulates metabolism, growth, and development. By mimicking endogenous T4, it compensates for insufficient hormone production.

The appropriate dose of Levotiroxina Teva is individualized and determined by the prescribing clinician based on the patient’s age, weight, severity of thyroid deficiency, and laboratory thyroid function tests. Patients should follow the dose prescribed by their healthcare professional.

Levothyroxine is generally considered safe in pregnancy and lactation when medically indicated, as untreated hypothyroidism can harm both mother and fetus. Dosage may need adjustment, and treatment should be guided by a healthcare provider who monitors thyroid function throughout pregnancy and breastfeeding.

To order Levotiroxina Teva, submit an enquiry on the product page at gnhindia.com specifying the required quantity. GNH India works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any necessary import documentation.

Levotiroxina Teva is a generic levothyroxine formulation that offers the same active ingredient and therapeutic effect as branded products such as Synthroid or Eltroxin. It provides comparable bioavailability and clinical efficacy while typically offering cost advantages for bulk or institutional purchasers.

Levotiroxina Teva should be stored at ambient temperature, below 25 °C, in its original packaging. Protect the tablets from moisture, excessive heat and direct sunlight to maintain potency throughout its shelf life.

Levotiroxina Teva is taken orally, usually once daily on an empty stomach, at least 30 minutes before breakfast. The tablet should be swallowed whole with a full glass of water; it should not be crushed, chewed, or split unless specifically instructed by a healthcare professional.

Serious risks include overtreatment leading to hyperthyroidism, which can cause cardiac arrhythmias, angina, or bone loss (osteoporosis). Rarely, allergic reactions such as rash, angioedema, or anaphylaxis may occur. Patients should report any chest pain, rapid heartbeat, severe bone pain, or signs of an allergic reaction to their clinician promptly.

Levotiroxina Teva should be avoided in individuals with known hypersensitivity to levothyroxine or any excipients in the tablet. Patients with untreated adrenal insufficiency, acute myocardial infarction, or uncorrected thyrotoxicosis should not receive the medication until those conditions are managed.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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