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AuthorisedTherapeutic use (Phase IV)Interventional

A Randomized, Non-inferiority Trial Comparing 7-Day Versus 4-Week Esomeprazole Treatment in Patients with Unexplained Dyspepsia

This research is looking at better ways to treat common tummy discomfort, often called indigestion or dyspepsia. Specifically, it's comparing two treatment plans using a medicine called esomeprazole. One group of participants will take esomeprazole for just 7 days, while another group will take it for 4 weeks. The main goal is to find out if the 7-day treatment reduces symptoms just as effectively as the 4-week treatment. This could mean a shorter course of medication for people, which might be more convenient. The study is for adults aged 18 and over who experience indigestion that doctors haven't yet found a clear cause for. It's a 'Phase IV' study, meaning the medicine is already approved, and we're learning more about its best use.

At a glance

Status
Authorised
Phase
Therapeutic use (Phase IV)
Sponsor
Landspitali
Enrolment target
128
Start
06 Feb 2026

What is this study about?

If you've ever had persistent discomfort or pain in your upper tummy, bloating, or feeling full quickly, you might be familiar with indigestion, also known as dyspepsia. Sometimes, doctors can't find a clear reason for these symptoms, which is called 'unexplained dyspepsia'. This study is really important because it's looking into the best way to use a common medicine, esomeprazole, to help people feel better.

Esomeprazole is a medicine that reduces the amount of acid your stomach makes. It's often used to treat indigestion and heartburn. Usually, doctors might prescribe it for a few weeks. However, this study wants to see if a shorter course of treatment – just 7 days – can be just as good as a longer course of 4 weeks. If it is, it could mean that people spend less time on medication, which might have fewer side effects and be more convenient.

The main thing the researchers will be looking at is how much your indigestion symptoms improve during the study. They'll use a special scorecard called the Glasgow Dyspepsia Severity Score to measure this. They also want to see if a shorter treatment plan affects whether people need further investigations, like a camera test down their throat (an endoscopy), to look closer at their tummy.

Key takeaways

  • This study compares 7-day vs. 4-week esomeprazole treatment for indigestion.
  • It aims to see if a shorter treatment works just as well as a longer one.
  • The study is for adults (18+) with unexplained indigestion.
  • Participation involves taking medication and reporting symptoms for about 7 weeks.
  • It's a 'Phase IV' study, focusing on how best to use an approved medicine.
  • Your symptoms will be carefully monitored to track improvement.

Who may be eligible?

This study is looking for volunteers who are experiencing unexplained indigestion. This means you have ongoing tummy discomfort, pain, or other symptoms in your upper belly, but your doctor hasn't found a specific cause for it yet.

You must be at least 18 years old to take part. There is no upper age limit, so people of all adult ages are welcome to consider participating.

Both men and women can join this study. The research aims to understand how these treatments work across different people.

Could this study suit you?

Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.

  1. Are you 18 years old or older?
  2. Do you experience ongoing tummy discomfort or pain (indigestion)?
  3. Has your doctor not found a specific cause for your indigestion yet?
  4. Are you able to attend appointments and follow study instructions for about 7 weeks?
  5. Are you happy to be assigned to either the 7-day or 4-week treatment group?
Answer every question to see your result.

What does participation involve?

If you decide to take part, you'll be randomly assigned to one of two groups, like picking names out of a hat. One group will take esomeprazole for 7 days, and the other will take it for 4 weeks. You'll visit the study clinic regularly, and your indigestion symptoms will be carefully monitored using surveys or questionnaires. You might also be given Rennie tablets, which are a common over-the-counter treatment for indigestion, to use if you need them for immediate relief.

Over the course of the study, which lasts for about 7 weeks, you'll record how you're feeling and how your symptoms change. There will be checks to see how you're responding to the medication. The total time you'll be actively involved in the study from start to finish will be approximately 7 weeks.

Potential risks and benefits

Taking part in a study like this could offer benefits, such as receiving treatment for your indigestion under close medical supervision and contributing to scientific knowledge that might help others in the future. However, there are potential risks, just like with any medication, including potential side effects from esomeprazole. Please be rest assured, you are always free to withdraw from the study at any time, for any reason, without it affecting your usual medical care.

Locations (1)

Some site locations are approximate. We're improving this — please verify with the trial team before travelling.
  • Unverified
    Iceland

Common questions

What is 'unexplained dyspepsia'?

It's a medical term for ongoing indigestion symptoms, like tummy pain or discomfort, when doctors haven't found a specific reason for them.

What is esomeprazole?

It's a common medicine that helps reduce the amount of acid your stomach makes. It's used to treat indigestion, heartburn, and acid reflux.

Will I know which treatment I'm getting?

No, you probably won't know if you're taking the 7-day or 4-week treatment. This is to ensure the results are fair and unbiased.

How long will the study last for me?

The study will track your progress over about 7 weeks in total, from when you start until the final check-up.

Are there any costs for me to participate?

No, you will not have to pay to take part in the study. All study-related medicines and assessments will be provided.

How to find out more

Always speak to your GP or specialist before deciding to take part in a study.

Discussion

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