Minor adverse reactions include skin rash, urticaria, nausea, vomiting, epigastric distress, arthralgia, paresthesia, loss of taste, abnormal loss of hair, myalgia, headache, pruritus, drowsiness, neuritis, edema, vertigo, skin pigmentation, jaundice, sialadenopathy and lymphadenopathy.
It should be noted that about 10% of patients with untreated hyperthyroidism have leukopenia (white blood cell count of <4000/mm3), often with relative granulopenia.
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