Best treatments for diarrhea

Understanding diarrhea

Diarrhea is passing loose, watery stools three or more times a day, or more often than is normal for you (NIDDK; MedlinePlus). It is described as acute when it typically lasts less than a week and resolves on its own, persistent when it lasts longer than 2 weeks but less than 4 weeks, and chronic when it lasts at least 4 weeks (NIDDK). Alongside frequent loose stools, people may have an urgent need to use the bathroom and cramping or abdominal pain; infection-related diarrhea can also bring bloody stools, fever, and chills (NIDDK). Causes include viral infection, food poisoning, medicine side effects such as antibiotics and magnesium-containing antacids, and digestive conditions (NIDDK; MedlinePlus). A key risk is dehydration, because loose stools remove more fluid and electrolytes than solid stools (NIDDK). Clinicians diagnose diarrhea through a physical exam, review of medicines, and, when needed, stool or blood tests to identify an infection (MedlinePlus). Most acute cases can be managed at home, but see a clinician for signs of dehydration, black or bloody stools, or diarrhea lasting more than 2 days in adults (NIDDK). This is general information for review and is not medical advice.

Frequently asked

What treats diarrhea?

Our catalog lists 24 products that may treat diarrhea, based on NIH RxClass (MED-RT “may treat”) drug-classification data — not the verbatim FDA label. They're rated where FDA recall-safety data exists; the current top-rated option is clonidine hydrochloride.

What is the best-rated treatment for diarrhea?

By our independent recall-safety rating — not an efficacy measure — clonidine hydrochloride ranks highest among the products we list for diarrhea. Always consult a professional.

How are these treatments ranked?

By our independent score, currently based on FDA regulatory recall-safety data (the methodology blends additional sources as they come online). See the How we rate page.

What types of drugs treat diarrhea?

Treatments for diarrhea span FDA drug classes including central alpha-2 adrenergic agonist, glycopeptide antibacterial, opioid agonist, somatostatin analog, bile acid sequestrant. Compare every option side by side, ranked by independent rating, above.

Treatment associations are derived from NIH RxClass (MED-RT “may treat”) drug-classification data — not the verbatim FDA label. This is general reference, not medical advice — always consult a licensed professional.