Bulk-forming laxatives, also known as fiber supplements, help soak up water in the intestine and make the stool softer. Bulk laxatives are made of indigestible fiber and are not dangerous for long term use. On the other hand, these types of laxatives have to be taken with ample amounts of water or they can cause obstructions in the large intestines. Over the counter brand names include Metamucil, Fiberall, Citrucel, Konsyl, and Serutan.
Stool softeners are laxatives that help soften stools. They are taken on a short-term basis to help relieve constipation, prevent dehydration, and relieve folks from straining during bowel movements. Brand names include Colace and Surfak.
Lubricants are laxatives that can help lubricate the stool to produce easier bowel movements. The most general example of a lubricant laxative is Mineral Oil. Brand names include Fleet and Zymenol. Lubricants typically stimulate a bowel movement within 8 hours.
Oxy-Powder is an all natural colon cleansing product that offers a safe and effective way of relieving constipation.