Lomotil is a type of medication used to treat acute and chronic diarrhea. The content of this medication is Diphenoxylate hydrochloride and Atropine sulfate. Just like every other medication, this medication has a list of side effects along with its usage such as nausea, vomiting, headache, diarrhea, dry mouth, loss of appetite, euphoria and others. If any of these would to occur to you, please seek medical attention immediately. This medication is to be taken strictly under a doctor’s advice and is to be kept away from children. Always adhere to the dosage instruction given by the doctor to avoid any overdose or other unwanted effects. Also do not pass on this medication to those who you think have the same symptom. It is best to use it only after consulting a doctor.