Prescription Required.Why?
Levothyroxine sodium is the primary active ingredient. It is a synthetic form of thyroxine (T4), a hormone naturally produced by the thyroid gland.Inactive ingredients vary depending on the brand and formulation (tablet, capsule, solution). Always check your specific product labeling.
Hypothyroidism (underactive thyroid): Levothyroxine replaces missing or insufficient thyroid hormone.
Goiter (enlarged thyroid gland) when caused by hypothyroidism.
Thyroid cancer after surgery or radioactive iodine treatment.
Myxedema coma (a lifethreatening complication of severe hypothyroidism).
Congenital hypothyroidism (present at birth).
Lethyrox 125mcg Tab 100s (Levothyroxine) replaces the thyroid hormone thyroxine (T4). In the body, T4 is converted to triiodothyronine (T3), which regulates metabolism, growth, and development. By supplementing T4, levothyroxine restores normal thyroid hormone levels and alleviates symptoms of hypothyroidism.
Store at room temperature, away from moisture and heat. Keep out of reach of children. Do not use if the medication is expired or shows signs of discoloration or damage.
Dosage is individualized based on age, weight, and response to treatment. It is crucial to follow your doctor's specific instructions.
Levothyroxine is typically taken once daily, on an empty stomach, at least 30-60 minutes before breakfast.
Do not crush, chew, or break tablets unless specifically instructed by your doctor.
Regular blood tests are necessary to monitor thyroid hormone levels and adjust the dose as needed.
Changes in heart rate (fast or slow)
Weight loss or gain
Tremor or shaking
Increased sweating
Heat intolerance or sensitivity to cold
Changes in menstrual cycles
Insomnia or difficulty sleeping
Muscle weakness or cramps
Diarrhea or constipation
Moderate alcohol consumption is generally not a major concern, but excessive alcohol use can interfere with medication absorption and worsen side effects. Consult your doctor.
Levothyroxine may cause side effects like dizziness or fatigue which could impact driving ability. Do not operate machinery if affected.
Levothyroxine is generally safe during pregnancy and breastfeeding but requires close monitoring of both mother and child's thyroid levels.
Dosage is adjusted based on child's age and weight. Regular monitoring is essential.
Generally well-tolerated by patients with kidney disease, but close monitoring is advisable.
Generally well-tolerated by patients with liver disease, but close monitoring is advisable.
Your doctor or pharmacist
Manufacturer's prescribing information
Reputable medical websites (e.g., Mayo Clinic, NHS)
