Post-marketing Surveillance of Linaclotide Tablet in Patients With Irritable Bowel Syndrome With Constipation or Chronic Constipation (Excluding Constipation Due to Organic Diseases)

This is a post-marketing long-term specified drug use-result survey study required for products in Japan. The investigator will register the patient who have been taking this product for the first time within 14 days after the start of treatment (inclusive of the start day). For each of the registered patients (including withdrawals and dropouts), the investigator will enter the survey data on the case report form.