Product image of Levothyroxine Sodium Serb (Levothyroxine Sodium) supplied by GNH India

Levothyroxine Sodium Serb

Active Ingredient:
Levothyroxine Sodium
Origin:
EU

Levothyroxine Sodium Serb (Levothyroxine Sodium)

Levothyroxine Sodium, the active ingredient in Levothyroxine Sodium Serb, is a thyroid hormone presented as a sterile injectable solution for intramuscular and intravenous use. It replaces deficient thyroid hormone in patients with hypothyroidism, after thyroid surgery, or with goiter.

GNH India supplies Levothyroxine Sodium Serb as a licensed, GDP-compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Serb Sa

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Indications & Clinical Uses

Levothyroxine Sodium Serb acts on the thyroid hormone pathway to restore normal hormone levels.

  • Hypothyroidism: restores normal thyroid hormone levels, improving metabolic function.
  • Post‑thyroidectomy replacement: provides necessary thyroxine after surgical removal of the thyroid gland.
  • Goiter: helps normalize thyroid hormone production, reducing gland enlargement.

How It Works

  • Levothyroxine Sodium is a synthetic form of thyroxine (T4) that enters cells and binds to nuclear thyroid hormone receptors. This binding modulates gene transcription, leading to increased basal metabolic rate, protein synthesis, and growth, thereby compensating for endogenous hormone deficiency.

Side Effects

Common Side Effects

  • Headache: mild to moderate discomfort.
  • Insomnia: difficulty falling or staying asleep.
  • Palpitations: sensation of rapid or irregular heartbeat.
  • Heat intolerance: increased sensitivity to warm environments.
  • Tremor: fine shaking of hands or limbs.
  • Sweating: excessive perspiration.

Serious or Rare Side Effects

  • Angioedema: swelling of face, lips, or throat.
  • Chest pain: possible indication of cardiac strain.
  • Arrhythmia: abnormal heart rhythm.
  • Severe allergic reaction: rash, itching, or anaphylaxis.
  • Osteoporosis: accelerated bone loss with long‑term excess.
  • Myocardial infarction: heart attack in susceptible individuals.

Precautions & Warnings

Levothyroxine Sodium requires careful clinical monitoring.

  • Dose titration: adjust based on thyroid function tests and clinical response.
  • Cardiovascular disease: monitor for tachycardia or angina.
  • Pregnancy: use only if benefits outweigh potential risks.
  • Elderly patients: start with lower dose and monitor closely.
  • Drug interactions: review concomitant medications that affect thyroid hormone levels.
  • Store at room temperature: keep in original container, protect from moisture and light.

Avoid Interactions

Levothyroxine Sodium may interact with several medicines.

Major Interactions (Avoid)

  • Antithyroid drugs (e.g., methimazole, propylthiouracil): block hormone action.
  • Calcium or iron supplements: markedly reduce absorption.
  • Amiodarone: may alter thyroid hormone metabolism.

Moderate Interactions (Monitor Closely)

  • Warfarin: may increase anticoagulant effect.
  • Beta‑blockers: may mask symptoms of excess hormone.
  • Corticosteroids: may increase hormone clearance.

Frequently Asked Questions

Levothyroxine Sodium Serb is a synthetic thyroid hormone indicated for replacement therapy in patients with hypothyroidism, after thyroidectomy, and for the management of goiter.

Levothyroxine sodium mimics endogenous thyroxine (T4). It binds to nuclear thyroid hormone receptors, regulating gene transcription and metabolic processes that restore normal physiological function.

The dose is individualized. The prescribing clinician determines the appropriate amount based on thyroid function tests, patient weight, age, cardiac status and other clinical factors.

Levothyroxine may be used in pregnancy or lactation only when the expected benefit justifies any potential risk. Clinicians evaluate each case and adjust dosing as needed.

Submit an enquiry on the product page at gnhindia.com with the required quantity. GNH India works with hospitals, pharmacies and procurement teams, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and import documentation.

Levothyroxine provides a stable, long‑acting synthetic form of T4, whereas alternatives such as liothyronine (T3) or desiccated thyroid contain T3 or a mixture of hormones. Levothyroxine is the standard for most replacement regimens due to its predictable pharmacokinetics.

Store at room temperature, below 25 °C, in the original packaging. Protect the product from moisture and direct light to maintain stability.

The product is supplied as a sterile injectable solution and is given by a qualified healthcare professional via intramuscular or intravenous injection according to the prescribed regimen.

Serious risks include cardiac arrhythmias, angina, myocardial infarction, severe bone loss (osteoporosis) from over‑replacement, and allergic reactions such as angioedema or anaphylaxis.

Patients with untreated adrenal insufficiency, acute myocardial infarction, or known hypersensitivity to levothyroxine should avoid its use. Clinicians must assess contraindications before prescribing.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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