Or, have you looked into Dr. Schultz forumula #1? that works very well!
This formula is full of stimulant laxatives, which are not good for long term use. The formula contains Curacao and cape aloes, senna leaves and pods, cascara sagrada and rhubarb root al of which are strong stimulant laxatives. Stimulant laxatives can cause electrolyte imbalances and weaken the intestinal muscles in as little as two weeks of use leading to a laxative dependence.
In addition the formula contains the berberine herb barberry. Berberine kills the intestinal flora, which further leads to constipation if you go off the formula since the flora generate serotonin, which regulates intestinal peristalsis. Berberine can also damage the intestinal lining after a few weeks of use and depletes potassium from the body elevating blood pressure.
There are much safer choices that do not cause the side effects of the herbs in the IF#1 formula.