Agents that cause constipation especially among the elderly include:- Opoid pain relievers like Morphine, Codeine etc. Anti-cholinergic agents like Atropine, Trihexiphenidyl Antispasmodics like dicyclomine Tricyclic antidepressants like amytriptyline Calcium channel blockers used in arrhythmias and high blood pressure such as verapamil Anti-Parkinsonian drugs – Parkinson’s disease itself may cause constipation and the drugs used forContinue reading “Drugs that can cause constipation”