Lethyrox 100 Tablet

Lethyrox 100 Tablet is a levothyroxine sodium tablet containing 100 micrograms of thyroxine (levothyroxine) in each tablet. It belongs to the thyroid hormone replacement class and is used to treat hypothyroidism, a condition where the thyroid gland does not make enough hormone. It may also be prescribed for certain goiter-related or thyroid hormone suppression uses when a clinician decides it is appropriate. Because Lethyrox 100 Tablet is a mid-to-higher strength tablet, it is typically selected for people whose thyroid hormone needs have already been assessed by a doctor.

How it works: Levothyroxine is a synthetic form of the natural thyroid hormone T4, so Lethyrox 100 Tablet helps replace or supplement the hormone your body is missing. In tablet form, it is swallowed and absorbed in the digestive tract, then converted in the body to the active hormone that helps regulate metabolism, energy, temperature, and many body functions.

Lethyrox 100 Tablet provides 100 micrograms per tablet, which is stronger than lower options such as Lethyrox 12.5 Tablet, 50 Tablet, 75 Tablet, and 88 Tablet. Doctors may choose Lethyrox 100 Tablet when a patient needs a larger replacement dose or when titration from lower strengths shows that this strength fits their thyroid lab results and symptoms. It is not usually the first tablet strength chosen for every patient, since levothyroxine dosing must be individualized.

• Treatment of hypothyroidism
• Thyroid hormone replacement therapy
• Prevention or treatment of goiter in selected patients
• TSH suppression in certain thyroid conditions
• Long-term maintenance of normal thyroid hormone levels

• Swallow Lethyrox 100 Tablet whole with a full glass of water unless your doctor gives different instructions.
• Take it on an empty stomach, usually 30 to 60 minutes before breakfast, for best absorption.
• Take it at the same time every day to keep thyroid levels steady.
• Avoid taking it at the same time as calcium, iron, antacids, or bile acid binders; separate dosing as directed by your doctor.
• Do not crush or split the tablet unless your clinician or pharmacist tells you it is appropriate.
• If you miss a dose, take it when you remember unless it is close to the next dose; do not double up unless instructed.

Each Lethyrox 100 Tablet contains 100 micrograms of levothyroxine sodium per tablet. It is commonly taken once daily, but the exact dose, schedule, and maximum daily amount are set by the doctor based on age, weight, thyroid tests, heart status, and treatment goals. Because this is a 100 microgram strength, it may be too high for some people as a starting dose and should only be used when a prescriber has determined it is the right strength.

Do not change your dose or stop the medicine without speaking to your doctor.

Common side effects of Thyroxine / Levothyroxine may include:

• Headache
• Nervousness or anxiety
• Tremor
• Fast heartbeat or palpitations
• Sweating
• Trouble sleeping
• Weight loss or increased appetite, especially if the dose is too high

• Lethyrox 100 Tablet is a higher thyroid hormone strength, so too much can cause symptoms of overactive thyroid if the dose is not right for you.
• Tell your doctor if you have heart disease, high blood pressure, atrial fibrillation, or a history of heart attack before taking this tablet.
• Dose needs may change during pregnancy, after childbirth, or with major weight changes, so thyroid labs should be monitored.
• Take extra care if you use calcium, iron, magnesium, aluminum antacids, sucralfate, or cholesterol-binding medicines because they can reduce absorption.
• Alcohol does not have a direct known interaction with levothyroxine, but heavy alcohol use can affect overall health and treatment consistency.
• Driving is usually not affected, but if you feel shaky, dizzy, or have palpitations, avoid driving and contact a clinician.
• Do not switch strengths or brands without medical advice, because even small changes can alter thyroid levels.

• Calcium supplements and calcium-containing antacids
• Iron supplements or multivitamins with iron
• Cholestyramine, colesevelam, or colestipol
• Sucralfate and some ulcer medicines
• Warfarin and other medicines whose effect may change when thyroid levels change

Store Lethyrox 100 Tablet in its original strip/box at room temperature, away from moisture, heat, and light, and keep it out of reach of children.