Fosamax is Polyethylene Glycol 400 Bulk, Polyethylene Glycol 400 Bulk and Lactulose Oral Liquid are both drugs for the treatment of constipation, and there is no such thing as which one is better, so you can choose the drug reasonably according to the different situations. In addition to the treatment of functional constipation, PEG-400 can also be used for preoperative bowel cleansing preparation, colonoscopy and other pre-test bowel cleansing preparation; while Lactulose Oral Liquid is not only used for the treatment of chronic constipation, but also used for the treatment and prevention of hepatic coma. In terms of for the treatment of constipation disease, all can play a good effect of laxative, so there is no which one is better. For the use of the drug, you need to follow the doctor’s instructions according to their own situation reasonable use of drugs. In addition, the initial days of drug treatment may have abdominal distension, abdominal pain and diarrhea, electrolyte disorders and other adverse reactions occur, if the above symptoms occur, it is recommended to consult a doctor in a timely manner in the hospital; pay special attention to the above two drugs and their tissue components of the allergy is prohibited. In the process of medication, follow the doctor’s instructions to take, do not change the dose of the drug and suddenly stopping the drug, etc., to avoid the occurrence of toxic side effects and adverse reactions.