Product image of L-Thyroxin Aristo (Anhydrous Levothyroxine Sodium) supplied by GNH India

L-Thyroxin Aristo

Active Ingredient:
Anhydrous Levothyroxine Sodium
Origin:
EU

L-Thyroxin Aristo (Anhydrous Levothyroxine Sodium)

Levothyroxine, the active ingredient in L-Thyroxin Aristo, is a thyroid hormone presented as an oral tablet for systemic use. It replaces deficient thyroid hormone and is prescribed for patients with hypothyroidism, goiter, or as adjuvant therapy in thyroid cancer. The formulation complies with European Union quality standards.

GNH India supplies L-Thyroxin Aristo as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Aristo Pharma Gmbh (Art 57)

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Indications & Clinical Uses

L‑Thyroxin Aristo (levothyroxine) is used to treat disorders of thyroid hormone deficiency and related conditions.

  • Hypothyroidism: restores normal thyroid hormone levels, improving metabolism and symptom control.
  • Goiter: reduces thyroid‑stimulating hormone stimulation, helping to shrink gland size.
  • Thyroid cancer (adjuvant therapy): provides hormone replacement after thyroidectomy to suppress TSH and lower recurrence risk.

How It Works

  • Levothyroxine is a synthetic form of the endogenous hormone thyroxine (T4). After oral absorption, it circulates bound to plasma proteins and enters cells where deiodinase enzymes convert it to the active triiodothyronine (T3). Both T4 and T3 bind nuclear thyroid hormone receptors, modulating gene transcription that regulates basal metabolic rate, protein synthesis, and growth.

Side Effects

Levothyroxine may cause a range of adverse reactions, varying in frequency and severity.

Common Side Effects

  • Headache: mild to moderate headache.
  • Palpitations: sensation of rapid or irregular heartbeat.
  • Nervousness or anxiety.
  • Weight loss: unintended decrease in body weight.

Serious or Rare Side Effects

  • Cardiac arrhythmia: potentially life‑threatening rhythm disturbances.
  • Chest pain: may indicate myocardial ischemia.
  • Severe allergic reaction: rash, swelling, or anaphylaxis.
  • Bone loss: accelerated osteoporosis with long‑term overtreatment.

Precautions & Warnings

When prescribing or dispensing L‑Thyroxin Aristo, several safety considerations should be observed.

  • Dose titration: adjust dose based on thyroid function tests and clinical response.
  • Cardiovascular disease: monitor closely in patients with coronary artery disease or arrhythmias.
  • Pregnancy and lactation: use only if clearly needed, after risk‑benefit assessment.
  • Drug interactions: review concomitant medications that may affect levothyroxine absorption or action.
  • Elderly patients: start with lower doses and monitor for overtreatment.
  • Store at ambient temperature: keep below 25 °C in the original container, protect from moisture and light.

Avoid Interactions

Levothyroxine can interact with several medicines, altering its absorption or pharmacodynamic effect.

Major Interactions (Avoid)

  • Calcium or iron supplements: bind levothyroxine in the gut, markedly reducing absorption.
  • Proton pump inhibitors (e.g., omeprazole): decrease gastric acidity and impair absorption.
  • Anticonvulsants (phenytoin, carbamazepine): increase metabolism leading to reduced efficacy.
  • Rifampin: induces hepatic enzymes, lowering serum levothyroxine levels.

Moderate Interactions (Monitor Closely)

  • Cholestyramine or colestipol: may decrease absorption, requiring dose adjustment.
  • Warfarin: levothyroxine can enhance anticoagulant effect, necessitating INR monitoring.
  • Beta‑blockers: may mask symptoms of overtreatment such as tachycardia.

Frequently Asked Questions

L‑Thyroxin Aristo contains levothyroxine, a synthetic thyroid hormone used to replace deficient hormone in patients with hypothyroidism, to reduce thyroid‑stimulating hormone in goiter, and as adjuvant hormone replacement after thyroidectomy for thyroid cancer.

Levothyroxine is converted in the body to the active hormone T3, which binds nuclear thyroid receptors and regulates gene expression. This action restores normal metabolic rate, protein synthesis, and growth processes that are impaired when thyroid hormone is lacking.

The dose of levothyroxine is individualized. A prescriber determines the appropriate amount based on the patient’s age, weight, severity of hormone deficiency, and laboratory thyroid function tests, then adjusts it as needed.

Safety data are limited, and the product is classified as pregnancy category unknown. Levothyroxine may be prescribed during pregnancy or lactation only when the potential benefit outweighs any possible risk, and under close medical supervision.

To place an order, 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.

L‑Thyroxin Aristo is a levothyroxine tablet, the standard synthetic T4 therapy. It offers consistent potency and bioavailability compared with natural desiccated thyroid extracts, which contain a mixture of T4 and T3 and can have variable hormone ratios.

Store the tablets at ambient temperature below 25 °C, in the original blister pack, protected from moisture and direct light. Do not refrigerate or expose the product to extreme heat.

The medication is taken orally, usually on an empty stomach, at least 30 minutes before breakfast. Swallow the tablet whole with a full glass of water; do not crush or chew it.

Serious risks include cardiac arrhythmias, especially in patients with underlying heart disease, severe chest pain indicating possible myocardial ischemia, allergic reactions such as anaphylaxis, and long‑term bone loss when overtreatment leads to excessive thyroid hormone levels.

Patients with untreated adrenal insufficiency, acute myocardial infarction, or known hypersensitivity to levothyroxine or any tablet excipients should avoid this product. It is also contraindicated in individuals with uncorrected thyrotoxicosis.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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