The best laxative effect: 1, radish: rich in crude fiber to promote gastrointestinal peristalsis, to keep the bowel movement. 2, leek: rich in dietary fiber, can mechanically stimulate intestinal peristalsis, has a very good laxative effect. 3, celery: stems and leaves are rich in dietary fiber, through mechanical stimulation of intestinal peristalsis also has a very good laxative effect. 4, oleander: oleander leaves in the The leaves of the greens contain a lot of dietary fiber, which is also very strong in the laxative effect.