Euthyrox 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 In such cases the daily dose should be reduced or the medication withdrawn for several days.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.