A study to compare how different substances (caffeine, warfarin, omeprazole, metoprolol, and midazolam) are handled by the body of healthy people and people with liver cirrhosis
This study aims to understand how your body handles certain common medicines, such as caffeine, a blood thinner (warfarin), and other widely used drugs, depending on your liver health. We're looking for both healthy volunteers and people with different stages of liver cirrhosis. By carefully giving small doses of these substances and then tracking them, researchers hope to learn how liver problems affect how quickly these drugs are processed and removed from the body. This information could help doctors give safer and more effective doses of medicines to people with liver conditions in the future. The study is a very early-stage investigation, focusing on understanding basic body processes.
At a glance
What is this study about?
Imagine your liver as a chemical factory, constantly working to process everything you put into your body, including medicines. This study is designed to be like a very careful observation of that factory.
We want to see how this factory copes with some common substances: caffeine (found in coffee), warfarin (a blood-thinning medicine), omeprazole (for stomach acid), metoprolol (for heart conditions), and midazolam (a calming medicine). We're particularly interested in how people with healthy livers process these, compared to people whose livers are affected by cirrhosis, which is a type of scarring.
By understanding these differences, doctors can learn more about how to prescribe medicines safely and effectively for people with liver conditions. This research helps ensure that patients get the right amount of medication at the right time, reducing the risk of side effects or the medication not working as it should. It's an important step in making medicines safer for everyone.
Key takeaways
- This study helps doctors understand how the body processes medicines differently with liver problems.
- It involves giving small, safe doses of common substances like caffeine and a blood thinner.
- Healthy volunteers and people with specific types of liver scarring (cirrhosis) are needed.
- The findings could lead to safer medicine doses for people with liver conditions.
- Participation includes clinic visits and blood tests, with careful medical monitoring.
Who may be eligible?
This study is looking for two main groups of people. Firstly, we need healthy volunteers, aged 18 or over, who don't have any significant liver problems.
Secondly, we are inviting people who have liver cirrhosis, which is a form of liver scarring. We are looking for individuals whose liver disease is currently stable and manageable. This means your liver is still doing a good job, even though there's some scarring.
The study also includes people with a more advanced stage of liver cirrhosis, where the liver is working less effectively. If you have been told you have F4 liver fibrosis or your doctor has mentioned Child-Pugh A or B, you might be suitable for this part of the study. All participants must be 18 years or older, and we welcome both men and women.
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.
- Are you 18 years old or older?
- Do you have a healthy liver, or have you been diagnosed with liver cirrhosis (liver scarring)?
- If you have liver cirrhosis, has your doctor mentioned F4 fibrosis or Child-Pugh A or B?
- Are you able to attend clinic visits and have blood tests?
- Are you able to understand and sign an informed consent form?
What does participation involve?
If you decide to take part, you would receive small, carefully controlled doses of the study substances (caffeine, warfarin, omeprazole, metoprolol, and midazolam). This would likely involve several visits to a clinic where doctors and nurses will closely monitor you. You'll need to have blood samples taken at different times after taking the substances so that researchers can measure how your body is processing them. There may also be other routine health checks throughout your participation. The total duration of your involvement in the study would be explained in detail before you agree to take part, but as this is a Phase 1 study, it typically involves a relatively short period of active participation and follow-up.
Potential risks and benefits
Locations (1)
- —UnverifiedGermany
Common questions
What drugs will I be given?
You will be given small amounts of caffeine, warfarin, omeprazole, metoprolol, and midazolam.
Will these drugs be regular doses?
No, you will receive very small, controlled doses, much lower than standard prescriptions, to safely test how your body processes them.
What is 'liver cirrhosis'?
Liver cirrhosis is a condition where your liver is scarred, which can affect how well it works.
What does 'Child-Pugh A' or 'Child-Pugh B' mean?
These are ways doctors describe how well your liver is functioning. A means your liver is still working fairly well, while B means it's less effective.
How long will I be involved in the study?
The study will involve several clinic visits over a period that will be fully explained before you agree to participate.
How to find out more
Always speak to your GP or specialist before deciding to take part in a study.
Discussion
Community discussion
Powered by our forum at community.patient.info. Please be respectful — this is not medical advice.