Maybe a little bit but not for long and then it can hurt your body if you take them too often. They can make your heart and other organs weak if you use them all the time. By nature, they flush everything out of your intestines, and if you do it often enough to cause weight loss they start to strip your body of minerals and nutrients that it needs to work properly and survive. Your potassium level can drop which can lead to heart problems. Laxatives are not a medically sound way to shed weight. People have died from abusing them.