Question: what are the side effects of taking methimazole?
Answer: Black, tarry stools.
bleeding under the skin.
burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings.
difficulty in breathing.
dizziness or lightheadedness.
drowsiness.
feeling of constant movement of self or surroundings.
general feeling of discomfort, illness, or weakness.