Movicol Adult 13.81g SatchetsMovicol 13. 8g sachet, powder for oral solution. It is a laxative for the treatment of constipation in adults, adolescents and elderly. It is not recommended for children below 12 years of age. Movicol helps you to have a comfortable bowel movement even if you have been constipated for a long time. Movicol also works in very bad constipation called faecal impaction. How to take Movicol This medicine can be taken at any time with or without food.