Levothyroxine is used to treat hypothyroidism, a condition where the thyroid gland does not produce enough thyroid hormone. Mechanism of Action
Levothyroxine is in a class of medications called Dosage
Always follow the instructions of doctor regarding the dosage and durationTreatment of HypothyroidismAdults and children: 12.5 to 50 mcg orally once a day.Infants: 10 to 15 mcg/kg/day. Side Effects
Headache, flushing, high temperature, sweating, weight loss, tremor, restlessness, excitability, difficulty sleeping, increased pressure around the brain in children,chest pain,palpitations, diarrhea, vomiting, muscle cramps, muscle weakness, deformity of the skull in infants caused by the early closure of joins in the skull bone, growth in children may slow or stop due to changes in bone growth, irregular periods, intolerance to heat, temporary hair loss in children. Warnings/Precautions
Take special precaution if you suffer from diabetes, high blood pressure, heart failure or have had a heart attack, or condition that affects your adrenal glands; or if you are over 50 years of age and have a long standing history of hypothyroidism.An electrocardiogram (ECG; test to measure the electrical activity of heart) is advised before starting treatment with levothyroxine, as changes induced by hypothyroidism may be confused with changes that occur due to decreased blood flow to heart (ischemia).Levothyroxine is to be taken in the morning on an empty stomach, at least half an hour before the first meal of the day.If your scheduled dose is skipped or missed, take it as soon as you remember if it is within 2 to 3 hours. If the time lapse is longer, skip the missed dose and continue with the next dose at the usual time.