Patient leaflet - Rezdiffra 100 mg film-coated tablets
1. What Rezdiffra is and what it is used for
Rezdiffra contains the active substance resmetirom.
Rezdiffra is a medicine used in adults to treat metabolic dysfunction-associated steatohepatitis (MASH). MASH is a liver disease where fat builds up in the liver, which can result in inflammation and damage to the liver cells. Rezdiffra is used in adults who have experienced inflammation and cell damage, resulting in moderate scarring (consistent with stage 2 fibrosis) or significant scarring (consistent with stage 3 fibrosis).
The active substance in Rezdiffra, resmetirom, works by binding to and activating a protein called thyroid hormone receptor beta (THR-β) in a type of liver cell called hepatocytes. In patients with MASH, THR-β is working less. By activating THR-β in the liver, resmetirom increases fat breakdown. This reduces the amount of fat stored in the liver which can help reduce inflammation, fibrosis and improve its function.
2. What you need to know before you take Rezdiffra
Do not take Rezdiffra
- if you are allergic to resmetirom or any of the other ingredients of this medicine (listed in section 6).
Warnings and precautions
Talk to your doctor, pharmacist or nurse before taking Rezdiffra.
In particular tell your doctor if you:
- have liver problems other than MASH, such as a liver infection including viral hepatitis (inflammation of the liver caused by a viral infection) or any liver disease involving the immune system (the body’s natural defences). This includes autoimmune hepatitis (inflammation of the liver caused by the immune system attacking the body’s own cells) and primary biliary cholangitis (liver damage caused when the immune system attacks the bile ducts, tubes which carry bile from the liver)
- drink alcoholic beverages or have liver damage due to drinking alcohol
- have gallbladder problems, including gallstones (small stones, usually made of cholesterol, that form in the gallbladder)
Children and adolescents
Do not give this medicine to children and adolescents under 18 years of age. It is not known if Rezdiffra is safe and effective for them.
Other medicines and Rezdiffra
Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.
Tell your doctor or pharmacist if you take any of the following medicines because these medicines may increase the level of Rezdiffra in your body which may increase your risk of side effects with Rezdiffra:
- clopidogrel (to reduce clotting of the blood)
- deferasirox (to remove excess iron from the body)
- gemfibrozil (to lower blood fats)
- teriflunomide (to treat multiple sclerosis)
Tell your doctor or pharmacist if you take any of the following medicines because Rezdiffra may increase the levels of these medicines in your body which may increase your risk of side effects with these medicines:
- atorvastatin, pravastatin, rosuvastatin, simvastatin (a group of medicines called statins, to lower cholesterol levels)
- pioglitazone (or other so-called CYP2C8 substrates, a particular class of medicine to treat diabetes)
Pregnancy and breast-feeding
If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor for advice before taking this medicine.
Rezdiffra has not been studied in pregnant women. Rezdiffra is not recommended for use during pregnancy.
It is not known if Rezdiffra can pass into breast milk and affect the baby. Your doctor will help you to decide whether to stop breast-feeding or avoid Rezdiffra treatment, considering the benefit of breast-feeding to the baby and Rezdiffra to the mother.
Driving and using machines
This medicine has no or negligible influence on your ability to drive or use machines.
Rezdiffra contains sodium
This medicine contains less than 1 mmol sodium (23 mg) per tablet, that is to say essentially ‘sodium-free’.
3. How to take Rezdiffra
Always take this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure.
How much to take
Rezdiffra is available as a tablet taken by mouth, which can be taken with or without food. The dose of Rezdiffra is based on your body weight. For patients weighing:
- less than 100 kg, the recommended dose is 80 mg taken once daily.
- 100 kg or more, the recommended dose is 100 mg taken once daily.
Your doctor may adjust your dose depending on your liver function and if you take certain medicines (see section “Other medicines and Rezdiffra”).
If you take more Rezdiffra than you should
Tell your doctor if you have or think you have taken too much Rezdiffra.
If you forget to take Rezdiffra
Do not take a double dose to make up for a forgotten dose. Take the next dose at the usual time.
If you stop taking Rezdiffra
Do not stop taking Rezdiffra without first discussing with your doctor.
If you have any further questions on the use of this medicine, ask your doctor, pharmacist or nurse.
4. Possible side effects
Like all medicines, this medicine can cause side effects, although not everybody gets them.
You may experience nausea and diarrhoea when you start taking Rezdiffra. These side effects are generally mild and often stop on their own in less than 3 weeks. If these problems are not resolved within 3 weeks or if they become worse, contact your doctor.
Very common (may affect more than 1 in 10 people):
- diarrhoea
- feeling sick (nausea)
Common (may affect up to 1 in 10 people):
itching (pruritus)
Uncommon (may affect up to 1 in 100 people):
- vomiting
- belly (abdominal) pain
- constipation
- rash
- dizziness
Rare (may affect up to 1 in 1,000 people):
- inflammation of the pancreas due to a blockage (obstructive pancreatitis)
- gallstones (cholelithiasis)
- inflammation of the gallbladder (cholecystitis) or problems with the pancreas or bile duct
- itchy rash (urticaria)
Not known (frequency cannot be estimated from the available data):
- Abnormal liver function tests (hepatoxicity)
Reporting of side effects
If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card scheme Website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.
5. How to store Rezdiffra
Keep this medicine out of the sight and reach of children.
Do not use this medicine after the expiry date which is stated on the carton and blister after EXP. The expiry date refers to the last day of that month.
Store below 30 °C.
Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.
| F | P | O |
| F | P | O |
| PO | F |
| O | P | F |
6. Contents of the pack and other information
What Rezdiffra contains
The active substance is resmetirom.
Each film-coated tablet contains:
- Rezdiffra 60 mg: 60 mg of resmetirom.
- Rezdiffra 80 mg: 80 mg of resmetirom.
- Rezdiffra 100 mg: 100 mg of resmetirom.
The other ingredients are:
- Tablet core: Microcrystalline cellulose, mannitol, croscarmellose sodium (see section 2 “Rezdiffra contains sodium”), colloidal anhydrous silica, magnesium stearate.
Tablet film-coating: Poly(vinyl alcohol), titanium dioxide (E171), macrogol, talc.
- Rezdiffra 80 mg film-coated tablets also contain yellow iron oxide (E172).
- Rezdiffra 100 mg film-coated tablets also contain yellow iron oxide (E172) and red iron oxide (E172).
What Rezdiffra looks like and contents of the pack
Rezdiffra 60 mg film-coated tablets are white, 6.4 mm x 12.2 mm oval film-coated tablets with “P60” on one side and plain on the other side.
Rezdiffra 80 mg film-coated tablets are yellow, 7.1 mm x 13.5 mm oval film-coated tablets with “P80” on one side and plain on the other side.
Rezdiffra 100 mg film-coated tablets are beige to pinkish, 7.6 mm x 14.6 mm oval film-coated tablets with “P100” on one side and plain on the other side.
Rezdiffra film-coated tablets are packed in PVC/PCTFE blisters with aluminium foil lidding.
Pack size
28 film-coated tablets.
Marketing Authorisation Holder
Madrigal Pharmaceuticals EU Limited
1 Castlewood Avenue
Dublin
D06 H685
Ireland
Manufacturer
Corden Pharma GmbH
Otto-Hahn-Strasse 1
68723 Plankstadt
Germany
This leaflet was last revised in 03/2026
This medicine has been given ‘conditional approval’. This means that there is more evidence to come about this medicine. The Medicines and Healthcare products Regulatory Agency will review new information on this medicine at least every year and this leaflet will be updated as necessary.
Other sources of information
Detailed information on this medicine is available on the Medicines and Healthcare products Regulatory Agency web site: https://www.gov.uk/ government/organisations/medicines-and-healthcare-products-regulatory-agency.