Questions about the patient's use of both prescription medications and over-the-counter preparations can identify agents with side effect profiles that may contribute to constipation. This line of enquiry is especially important in older patients who may be taking multiple medications.
Some drugs that are associated with constipation:
In general, which types of drugs will cause constipation?
Extra info: Parasympatholytics are muscarinic receptor antagonists. By blocking the muscarinic receptor, the GI motility will decrease, resulting in constipation.