Levothyroxine Teva

Levothyroxine, the active ingredient in Levothyroxine Teva, is a thyroid hormone presented as an oral formulation for oral use. It replaces deficient endogenous thyroid hormone and is used to treat hypothyroidism and related conditions.

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

Levothyroxine acts on the thyroid hormone pathway to restore normal metabolic function.

- Hypothyroidism: normalises low thyroid hormone levels and alleviates associated symptoms. - Post‑thyroidectomy replacement: provides necessary hormone after surgical removal of the thyroid gland. - Goiter: reduces gland enlargement by correcting hormone deficiency. - Congenital hypothyroidism: supplies essential hormone to infants with absent or insufficient thyroid function.

Levothyroxine may cause a range of adverse reactions, most of which are dose‑related.

Common Side Effects: - Headache: mild to moderate discomfort. - Insomnia: difficulty falling or staying asleep. - Palpitations: sensation of rapid or irregular heartbeat. - Weight loss: unintended reduction in body weight. - Heat intolerance: increased sensitivity to warm environments. - Tremor: fine shaking of hands or limbs.

Serious or Rare Side Effects: - Cardiac arrhythmia: abnormal heart rhythm that may require medical attention. - Angina or chest pain: signs of myocardial ischemia. - Severe hyperthyroidism: symptoms such as anxiety, sweating, and rapid weight loss. - Allergic reaction: rash, itching, swelling, or difficulty breathing. - Bone loss (osteoporosis): increased risk with long‑term overtreatment. - Myopathy: muscle weakness or pain.

When using Levothyroxine, several safety considerations should be observed.

- Dose adjustment: monitor TSH and free T4 levels regularly to tailor therapy. - Cardiovascular disease: initiate therapy cautiously in patients with angina or arrhythmias. - Elderly patients: start with a lower dose and titrate slowly. - Pregnancy: discuss risks and benefits with a healthcare professional before use. - Drug interactions: review all concomitant medications for potential effects on absorption or metabolism. - Store at ambient temperature: keep in the original container, protect from moisture and light.

Levothyroxine interacts with several medicines that can alter its absorption or effect.

Major Interactions (Avoid): - Calcium supplements: reduce levothyroxine absorption when taken simultaneously. - Iron salts: markedly decrease oral bioavailability. - Proton pump inhibitors: may lower absorption; separate dosing by at least 4 hours. - Antacids containing aluminum or magnesium: interfere with uptake.

Moderate Interactions (Monitor Closely): - Warfarin: levothyroxine may enhance anticoagulant effect; monitor INR. - SSRIs (e.g., sertraline): may require thyroid function monitoring. - Cholesterol‑lowering agents (e.g., cholestyramine): can bind levothyroxine and reduce its effectiveness.