L-Thyroxin (Levothyroxine Sodium)

Levothyroxine sodium is a synthetic form of thyroxine (T4). After oral absorption it is converted to the active hormone triiodothyronine (T3) in peripheral tissues. The hormone binds nuclear thyroid receptors, influencing gene transcription that regulates metabolism, growth, and protein synthesis, thereby normalizing the body's thyroid function.

The appropriate dose of L-Thyroxin is individualized. A qualified prescriber determines the starting amount and any adjustments based on the patient’s thyroid‑stimulating hormone (TSH) levels, age, weight, cardiac status, and clinical response. Patients should follow the prescribing clinician’s instructions and not alter the dose on their own.

L-Thyroxin is classified as Pregnancy Category A, indicating that it is considered safe for use during pregnancy when medically indicated. Adequate thyroid hormone replacement is important for both mother and fetus. The drug is also excreted in breast milk, but the benefits of treatment generally outweigh potential risks, and continuation is usually recommended under medical supervision.

To order L-Thyroxin, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India supplies hospitals, pharmacies and procurement teams worldwide. After the request, the sales team will verify trade or institutional credentials, then provide pricing, availability, shipping details (including any cold‑chain requirements) and assist with import documentation.

L-Thyroxin contains levothyroxine sodium, the most widely used synthetic thyroid hormone. Compared with liothyronine (T3) preparations, levothyroxine provides a longer‑acting, more stable source of hormone that is converted to T3 as needed. This generally results in smoother hormone levels and fewer dosing adjustments, making it the preferred first‑line therapy for most patients.

L-Thyroxin tablets should be stored at ambient temperature, preferably below 25 °C. Keep them in the original blister pack or container to protect from moisture and light. Do not store in bathrooms or near heat sources. Ensure the product is kept out of reach of children and discarded after the expiration date.

L-Thyroxin is taken orally, usually once daily on an empty stomach, at least 30‑60 minutes before breakfast. Swallow the tablet whole with a full glass of water. Consistency in timing and relation to meals helps maintain stable absorption. Patients should follow the specific instructions provided by their healthcare professional.

Serious risks include cardiac arrhythmias, angina, and exacerbation of osteoporosis, especially if the dose is too high. Symptoms such as rapid heartbeat, chest pain, tremor, severe anxiety, or unexplained weight loss may indicate overtreatment. Patients should report these signs promptly and have thyroid function monitored regularly.

L-Thyroxin should be avoided in individuals with untreated adrenal insufficiency, acute myocardial infarction, or uncorrected thyrotoxicosis. Patients with known hypersensitivity to levothyroxine sodium or any excipients in the tablet formulation should also not use the product. A healthcare provider must evaluate any contraindications before initiating therapy.