The pronunciation of some letters is dissimilar in European Portuguese and Brazilian Portuguese, because the Portuguese is a pluricentric language.
Laxatives (purgatives, aperients) are foods, compounds, or drugs taken to induce bowel movements or to loosen the stool most often taken to treat costipation . Certain stimulant, lubricant, and saline laxatives are used to evacuate the colon for rectal and/or bowel examinations, and may be supplemented by enemas under certain circumstances. Sufficiently high doses of laxatives cause diarrhoea. Laxatives work to increase the movement of fecal matter along the colon.
Bulk-forming laxatives can have some effect within 12-24 hours but their full effect usually takes 2-3 days to develop. Osmotic laxatives such as lactulose can take 2-3 days to have any effect so they are not suitable for the rapid relief of constipation. Stimulant laxatives usually work within 6-12 hours.