Bulk-forming laxatives are a type of medication used to relieve constipation. They work by absorbing water in the intestines, which increases the bulk of stool and stimulates bowel movements. Common ingredients in these laxatives include psyllium, methylcellulose, and polycarbophil. These laxatives are generally considered safe for long-term use and are often recommended as a first-line treatment for constipation. It is important to drink plenty of water when using bulk-forming laxatives to help them work effectively and prevent potential side effects, such as bloating or gas.