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Compare Lomotil vs. Viberzi

Head-to-head comparisons of medication uses, side effects, warnings, and more.

Key takeaways

Lomotil (diphenoxylate/atropine) and Viberzi (eluxadoline) are both medications used to treat diarrhea, but they have some key differences. Lomotil is a combination of an opioid (diphenoxylate) and an anticholinergic (atropine), and it is used to treat general diarrhea. It is a Schedule V controlled substance and is available in both tablet and oral solution forms. Viberzi, on the other hand, is specifically used for irritable bowel syndrome with diarrhea (IBS-D) and is a Schedule IV controlled substance. It works by attaching to opioid receptors in the gut to reduce abdominal pain and diarrhea. Viberzi must be taken twice daily with food, while Lomotil is taken up to four times a day. Lomotil is available as a generic, making it potentially more affordable, whereas Viberzi does not have a generic form. Additionally, Viberzi cannot be used by people without a gallbladder or those who drink heavily due to the risk of pancreatitis, a serious side effect not associated with Lomotil.

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