Product image of Levotiroxina Sanofi (Levothyroxine Sodium) supplied by GNH India

Levotiroxina Sanofi

Active Ingredient:
Levothyroxine Sodium
Origin:
EU

Levotiroxina Sanofi (Levothyroxine Sodium)

Levothyroxine Sodium, the active ingredient in Levotiroxina Sanofi, is a synthetic thyroid hormone presented as an oral tablet for oral use. It treats hypothyroidism and related thyroid hormone deficiencies in adults and children.

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

Manufacturer / TM Owner

Sanofi-Aventis, S.A.

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Indications & Clinical Uses

Levotiroxina Sanofi, a synthetic thyroid hormone, acts on the hypothalamic‑pituitary‑thyroid axis to restore normal metabolism.

  • Hypothyroidism: restores normal thyroid hormone levels, alleviating fatigue, weight gain and cold intolerance.
  • Post‑thyroidectomy hormone deficiency: provides necessary thyroxine replacement after surgical removal of the thyroid gland.
  • Goiter: suppresses thyroid‑stimulating hormone to reduce gland enlargement.
  • Thyroid cancer suppression therapy: helps maintain low TSH levels to limit tumor stimulation.

How It Works

  • Levothyroxine Sodium is a synthetic form of the endogenous hormone T4. After oral absorption, it binds to nuclear thyroid hormone receptors in target cells, where it is partially converted to the active T3 form. This interaction regulates gene transcription, thereby normalizing basal metabolic rate and supporting growth and development in patients with deficient thyroid function.

Side Effects

Levotiroxina Sanofi may cause a range of adverse reactions, varying from mild to serious.

Common Side Effects

  • Headache: mild to moderate headache.
  • Palpitations: sensation of rapid or irregular heartbeat.
  • Tremor: fine shaking of the hands.
  • Insomnia: difficulty falling or staying asleep.

Serious or Rare Side Effects

  • Cardiac arrhythmia: potentially life‑threatening irregular heart rhythm.
  • Angina pectoris: chest pain due to reduced heart blood flow.
  • Osteoporosis: decreased bone density with long‑term overtreatment.
  • Allergic reaction: rash, itching, swelling, or anaphylaxis.

Precautions & Warnings

Before prescribing Levotiroxina Sanofi, clinicians should consider several safety precautions.

  • Dose adjustment: individualize dose based on age, weight, cardiac status and laboratory thyroid function tests.
  • Cardiovascular disease: monitor closely in patients with coronary artery disease or arrhythmias.
  • Pregnancy and lactation: use only if benefits outweigh potential risks; consult obstetric specialist.
  • Elderly patients: start with lower dose and titrate slowly to avoid overtreatment.
  • Drug interactions: review concomitant medications that may affect levothyroxine absorption or metabolism.
  • Store at ambient temperature: keep below 25°C in the original container, protect from moisture and light.

Avoid Interactions

Levotiroxina Sanofi can interact with several medicines, altering its effectiveness or safety.

Major Interactions (Avoid)

  • Calcium or iron supplements: significantly reduce levothyroxine absorption; separate dosing by at least 4 hours.
  • Proton pump inhibitors (e.g., omeprazole): may decrease absorption; monitor thyroid function.
  • Anticonvulsants (e.g., phenytoin, carbamazepine): increase metabolism leading to reduced efficacy.

Moderate Interactions (Monitor Closely)

  • Warfarin: levothyroxine may enhance anticoagulant effect; monitor INR.
  • Beta‑blockers: may mask symptoms of thyrotoxicosis; observe cardiovascular response.
  • Cholesterol‑lowering agents (e.g., cholestyramine): can bind levothyroxine and lower its bioavailability.

Frequently Asked Questions

Levotiroxina Sanofi is a prescription oral tablet that provides levothyroxine sodium, a synthetic thyroid hormone. It is used to replace or supplement deficient thyroid hormone in conditions such as hypothyroidism, post‑thyroidectomy hormone deficiency, goiter, and as part of thyroid cancer suppression therapy.

Levothyroxine Sodium is a synthetic form of thyroxine (T4). After absorption, it binds to nuclear thyroid hormone receptors and is partially converted to the active T3 form, regulating gene expression that controls basal metabolic rate, growth, and development, thereby normalising the metabolic disturbances caused by low thyroid hormone.

The dose of Levotiroxina Sanofi is individualized. A qualified prescriber determines the appropriate amount based on the patient’s age, weight, cardiac status, laboratory thyroid function tests and clinical response. No standard dosing regimen is provided here.

Levotiroxina Sanofi may be used during pregnancy or lactation only when the expected benefit to the mother outweighs any potential risk to the fetus or infant. Clinicians should assess each case carefully and monitor thyroid function closely throughout pregnancy and breastfeeding.

To order Levotiroxina Sanofi, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India supplies hospitals, pharmacies and procurement teams across international markets, verifies trade or institutional credentials, and then provides pricing, availability, shipping details (including any cold‑chain requirements) and the necessary import documentation.

Levotiroxina Sanofi contains levothyroxine sodium, the same active ingredient found in most synthetic thyroid hormone preparations. Compared with combination T4/T3 products, it provides a stable, single‑hormone source that is widely accepted as the standard of care for most patients requiring hormone replacement.

Store Levotiroxina Sanofi at ambient temperature, preferably below 25 °C. Keep the tablets in the original blister pack or container, protect them from moisture, heat and direct light, and ensure the package is tightly closed when not in use.

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

Serious risks include cardiac arrhythmias, angina pectoris, osteoporosis from long‑term overtreatment, and severe allergic reactions such as anaphylaxis. Patients should report chest pain, palpitations, unexplained fractures, or signs of an allergic response to their healthcare provider promptly.

Levotiroxina Sanofi should be avoided in patients with known hypersensitivity to levothyroxine sodium or any excipients in the tablet. It is also contraindicated in individuals with untreated adrenal insufficiency or acute myocardial infarction until those conditions are stabilized.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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