(1) Please consult your physician if symptoms are not relieved or disappear after one course of continuous use of this product. (2) During the period of taking the medicine, it is normal to have blackish-brown lustreless stools without other discomforts. The color of stool may become normal after 1~2 days after stopping the medicine. (3) No other bismuth preparations should be taken during the administration of this product, and this product should not be taken in large doses for a long period of time.