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.
Stool (faecal) softeners usually work within 12 to 72 hours. Laxatives that are given via the back passage (rectum) - suppositories or enemas - usually work within 15-30 minutes. Stronger osmotic laxatives such as phosphate enemas can be used to clear the bowel quickly, in just a few minutes.