Movicol

A drug used in the treatment of constipation, Movicol comes in the form of a dissolvable sachet and is marketed outside the US by Norgine Ltd

The active ingredient is polyethylene glycol '3350' (also known as macrogol), which belongs to a class of drugs called osmotic laxatives. These drugs work by binding to water in the gut, thereby moistening stools making them easier to pass.

For more detailed information, including side effects and contra-indications of the drug see the British National Formulary or the references.