Rezdiffra vs Viberzi

A side-by-side look at two gastrointestinal medications advertised on TV. Informational only — not medical advice.

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Information reviewed July 24, 2026

US RezdiffraUS Viberzi
Generic nameresmetiromeluxadoline
Drug classThyroid Hormone Receptor-Beta AgonistMu-Opioid Receptor Agonist
TreatsMetabolic dysfunction-associated steatohepatitis (MASH)Irritable bowel syndrome with diarrhea
CategoryGastrointestinalGastrointestinal
ManufacturerMadrigal PharmaceuticalsAbbVie
Year approved20242015
FDA warningModerate warningsModerate warnings
Est. TV ad spend
Common side effectsDiarrhea, Nausea, Itching, Gallbladder problemsConstipation, Nausea, Abdominal pain, Risk of pancreatitis

Frequently asked questions

Is Rezdiffra or Viberzi better?

Neither is universally "better." Rezdiffra (resmetirom) and Viberzi (eluxadoline) are both used for gastrointestinal, but the right choice depends on your medical history, insurance and your doctor's guidance. This comparison is informational only.

What's the difference between Rezdiffra and Viberzi?

Rezdiffra is a Thyroid Hormone Receptor-Beta Agonist made by Madrigal Pharmaceuticals, while Viberzi is a Mu-Opioid Receptor Agonist made by AbbVie. See the table above for a side-by-side breakdown.

Which one spends more on TV ads?

Rezdiffra has the larger estimated TV advertising budget of the two.

TVPills

A reference tool to help identify prescription medications and supplements seen in television advertising. This is not medical advice. Always consult a healthcare professional.

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