A bulk-forming laxative is recommended by most doctors because it increases the water content and bulk of the stool, making it easier to pass, states WebMD. This method works slowly and naturally to relieve constipation.
There are other types of laxatives such as saline and stimulant laxatives, Everyday Health explains. Stimulant laxatives are the roughest because they cause the bowels to contract and flush out the stool, but if abused, they can be dangerous. Usually most people don't need a laxative and can relieve constipation by drinking more fluids, adding more fiber to their meals and exercising a bit more. If someone chooses to use a laxative, there are a plethora of different kinds, including stool softeners, lubricants and water enemas.