Randomised, relative bioavailability clinical trial of amylmetacresol, dichlorobenzyl alcohol, lidocaine and vitamin c lozenges after a single oral dose administration to healthy volunteers under fasting conditions in a crossover design.
This medical study is designed to understand how two different lozenges, used for sore throats, deliver their active ingredients into the body. It’s called a 'bioequivalence' study, meaning we're comparing how well the body absorbs the medicine from each lozenge in healthy adults. Participants will take a single dose of different lozenges on separate occasions while fasting. This helps researchers work out if a new lozenge works in the same way as an existing one, making sure it delivers the right amount of medicine effectively. It’s an early-stage study, focusing purely on how medicines act in the body.
At a glance
What is this study about?
You might be wondering what this study is all about. Well, when you take medicine, it needs to get into your body to do its job. This study is looking at lozenges, which are often used for a sore throat. Specifically, it's comparing a new type of lozenge to one that's already well-known, to see if they deliver their key ingredients, like those that help numb pain and fight germs, into your body in the same way. Think of it like comparing two different cars to see if they both use the same amount of fuel for the same journey – in this case, the 'fuel' is the medicine and the 'journey' is getting into your bloodstream.
This type of research is really important because it helps scientists make sure that any new medicine or new way of making an existing medicine works just as effectively and safely as what's already out there. If a new lozenge delivers the same amount of medicine to your body as an old one, it means it's likely to have a similar effect. This is a very early stage of testing, often called 'Phase 1', and it's a vital step before a medicine can be made widely available.
The main goal is to understand how these lozenge ingredients get absorbed into your system after you take just one. This helps ensure that future medicines are reliable and consistent. It's not about treating a sore throat in this study, but rather about the science behind how the medicine travels through your body.
Key takeaways
- Compares how two different throat lozenges deliver medicine.
- Involves healthy adults, 18 years and older.
- Aims to ensure new medicines are absorbed correctly.
- Requires fasting before taking the lozenges.
- You'll give blood samples after taking the lozenge.
Who may be eligible?
To join this study, generally, you'd need to be an adult, aged 18 or older. There isn't an upper age limit mentioned, so older adults might also be able to take part.
Critically, you need to be a 'healthy volunteer'. This means you shouldn't have any significant ongoing health problems or serious medical conditions that might affect how your body handles the medicine being tested.
- Are you 18 years old or older?
- Do you consider yourself generally healthy, without any serious ongoing medical conditions?
- Are you able to follow specific instructions, like fasting before visits?
- Are you comfortable with having blood samples taken throughout the study?
This is a guide only — the research team will confirm whether you can take part.
What does participation involve?
If you decide to take part, you'll be asked to visit the study clinic multiple times. On each visit, after an overnight fast (meaning you won't eat anything), you'll be given a single lozenge. You'll switch between different lozenges on different visits – this is called a 'crossover' design, and it helps compare them fairly.
After taking the lozenge, doctors and nurses will take blood samples at specific times over a period to check how the ingredients are being absorbed and cleared from your body. They'll also monitor you closely to make sure you're feeling well throughout the study. The total duration of your involvement, including all visits and follow-ups, will depend on the full study plan, which the research team will explain.
Potential risks and benefits
Locations (1)
- —Spain
Common questions
What is a 'healthy volunteer'?
A healthy volunteer is someone who doesn't have any major health problems that could affect the study results or put them at extra risk.
Do I need to fast before taking the lozenge?
Yes, you will need to fast before each lozenge dose. This means not eating or drinking anything (except water) for a certain number of hours before your visit, as instructed by the study team.
Will the lozenges treat a sore throat?
This study is not about treating a sore throat. It's about how the body absorbs the medicine from the lozenges in healthy people, not people with a sore throat.
What are 'amylmetacresol' and 'dichlorobenzyl alcohol'?
These are common ingredients found in many throat lozenges that help soothe pain and fight germs. Lidocaine helps numb pain, and Vitamin C is also included in the lozenge being studied.
Who is running this study?
This study is being run by medical researchers who follow strict guidelines to ensure participant safety and reliable results.
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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