Which class of medications can help stop diarrhea?

Antidiarrheals are specifically designed to help manage and alleviate diarrhea. These medications work by slowing down gut movement, reducing the frequency of bowel movements and the amount of fluid lost during diarrhea. Common examples of antidiarrheal medications include loperamide and bismuth subsalicylate. They target the underlying mechanisms that lead to increased and frequent bowel movements, providing relief from the symptoms associated with diarrhea.

Other classes of medications listed do not serve this purpose. Antidepressants are primarily used to treat mood disorders and have no direct effect on gastrointestinal function related to diarrhea. Anticoagulants are medications that help prevent blood clots and are not related to digestive health. Antihistamines are primarily used to treat allergy symptoms, with some effects on nausea and vomiting, but they are not formulated to manage diarrhea specifically. Thus, antidiarrheals are the appropriate choice for addressing this condition.