Administration :
Should be taken on an empty stomach: Take ? hr before meals.
Contraindications :Contraindications :
Hyperthyroidism of any origin.
Exception: As concomitant therapy in the treatment of hyperthyroidism with antithyroid drugs after normal function has been achieved. In pregnancy, however, such a concomitant therapy is not indicated.
Special Precautions :
Even mild hyperthyroidism due to Euthyrox must be avoided by all means, especially in patients with coronary heart disease, heart failure or heart rhythm disturbances of the rapid type.
In patients with hypothyroidism due to a disease of the pituitary gland, it must be clarified whether underactivity of the adrenal cortex (adrenocortical insufficiency) is also present. If so, the latter should be treated before initiating thyroid hormone therapy.
Effects on the Ability to Drive or Operate Machinery: There are no indications that Euthyrox interferes with driving a vehicle, operating machinery or working without a firm hold.
Use in Elderly: In elderly people, Euthyrox should be dosed very carefully. A small dose should be chosen to start with, which can then be increased gradually and at long intervals with frequent thyroid hormone checks.
Adverse Reactions
Where the individual tolerance limit for levothyroxine is exceeded or in the case of overdosage, it is possible for the following clinical symptoms typical of hyperthyroidism to occur, especially if the dose is increased too quickly at the start of treatment: irregular or rapid heart rate (tachycardia, palpitations, arrhythmias such as atrial fibrillation and extrasystoles), chest pain (angina pectoris), headache, muscle weakness or cramps, warmth and redness of the face (flushing), fever, vomiting, disorders of menstruation, pseudotumor cerebri (increased pressure in the head with eye swelling), trembling, restlessness, sleep disturbances, sweating (hyperhidrosis), weight loss, diarrhea. In such cases the daily dose should be reduced or the medication withdrawn for several days.
Therapy may carefully be resumed once the adverse effects have disappeared. In case of hypersensitivity to any of the ingredients of levothyroxine (Euthyrox), allergic reactions, particularly of the skin, may occur. Cases of angioedema (swelling of the face or throat) have been reported.
At the first sign of any adverse drug reaction, patient must seek medical attention immediately.