Yes, isomaltooligosaccharide does have the effect of expelling toxin and relaxing bowels, and there are no side effects. You can ask the pharmacist at the drugstore. I don't know what people use to buy isomaltooligosaccharides. If you simply detoxify your body, you can buy some detoxification and laxative products containing isomaltooligosaccharides! For example, Miao Chunjiang Oral Liquid, Li Jian Sanqing Granule and Orange Magic Granule all contain isomaltooligosaccharides, and Li Jian Sanqing Granule has the highest content, followed by Miao Chunjiang Oral Liquid and Orange Magic Granule. Choose for yourself.