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Abdominal cramping and intestinal spasms are common complaints in patients with conditions such as irritable bowel syndrome (IBS). Two of the most frequently prescribed medications for these symptoms are dicyclomine and hyoscyamine. These medications work by blocking muscarinic receptors, reducing smooth muscle contractions in the gastrointestinal tract and helping relieve painful spasms.
While these medications can be effective, they are not without risks. Because of their anticholinergic effects, patients may experience dry mouth, constipation, blurred vision, dizziness, and urinary retention. Older adults are particularly susceptible to these adverse effects, making careful patient selection and monitoring especially important. Patients with benign prostatic hyperplasia (BPH), glaucoma, or cognitive impairment may be at higher risk for complications.
In this episode of the Real Life Pharmacology podcast, we’ll review how dicyclomine and hyoscyamine work, discuss their most common clinical uses, compare their adverse effect profiles, and highlight practical education points to help optimize safe and effective use.
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