Containing macrogol (polyethylene glycol), which is a type of medicine known as an osmotic laxative, each Movicol sachet also contains sodium bicarbonate, sodium chloride and potassium chloride. The contents of the sachets should be mixed with water to make a drink. Macrogol is an inert substance that passes through the gut without being absorbed into the body. It relieves constipation because it causes the water it is taken with to be retained in the bowel instead of being absorbed into the body. This increases the water content and volume of the stools in the bowel making them softer and easier to pass.
Sodium bicarbonate, sodium chloride and potassium chloride (electrolytes) are included in each sachet to help ensure that the laxative works without causing the body to gain or lose significant amounts of sodium, potassium or water that are needed for proper functioning of the body.
Movicol powder is used to relieve:
Build up of compressed and hardened stools (faeces) in the rectum as a result of chronic constipation (faecal impaction)