1. Eisenmann, A., Amann, A., Said, M., Datt a, B. and Ledochowski, M. (2008) ‘Implementation and interpretation of hydrogen breath tests’, Journal of Breath Research, 2(4),
p.046002.
2. Ledochowski, M. and Ledochowski, L. (2011) Hydrogen Breath Tests. 2nd Edition edn. Austria: Verlag Akademie für Ernahrungsmedizin GmbH.
3. Roccarina, D., Lauritano, E. C., Gabrielli, M., Franceschi, F., Ojetti , V. and Gasbarrini, A. (2010) ‘The role of methane in intestinal diseases’, The American Journal of
Gastroenterology, 105(6), pp. 1250–1256.
4. Pitt, P., de Bruijn, K. M., Beeching, M. F., Goldberg, E. and Blendis, L. M. (1980) ‘Studies on breath methane: The effect of ethnic origins and lactulose’, Gut, 21(11), pp. 951–954.
5. Di Stefano, M. and Corazza, G. R. (2009) ‘Role of hydrogen and methane breath testing in gastrointestinal diseases’, Digestive and Liver Disease Supplements, 3(2), pp. 40–43.
Welcome to the Gastrolyzer® website
Gastrolyzer® range – what is it?
The Gastrolyzer® range of hydrogen and methane devices aids in the detection of gastrointestinal disorders. Please click on the devices to find out more…
As easy as…
Gastrolyzer Educational Portal
Our Educational Portal is designed to provide you with the latest insights, expert guidance, and practical resources to help you make the most of the Gastro+™ and GastroCH4ECK® devices provided by Bedfont® Scientific Limited.
Visit Portal
What is HMBT?
Hydrogen and Methane Breath Testing (HMBT) is a non-invasive method for gastroenterologists and dietitians to investigate gut function, and detect gastrointestinal disorders such as lactose intolerance, IBS, SIBO and more1.
When your food is digested, it is broken down by the bacteria in your gut and this process releases the gases Hydrogen and/or Methane, which can then be measured on your breath2. Both Hydrogen and Methane can be measured because it is estimated that 33-41% of the population are Methane3, 4, 5 producers.
Based on the levels of the gases you breathe out, healthcare professionals can determine what might be upsetting your stomach and provide you with nutritional advice or medication.
Accreditations
We take the utmost pride in the fact that the Gastrolyzer® devices are accredited to BS EN ISO13485:2016 and CE marked to the Medical Device Directive (MDD).


GastroCHART™
GastroCHART™ is a FREE patient management software for the Gastrolyzer® devices.
Patients can be synchronised between the Gastro+™/GastroCH4ECK® and computer, enabling you to safely back-up and store patient profiles and results.
Patients can be synchronised between the Gastro+™/GastroCH4ECK® and computer, enabling you to safely back-up and store patient profiles and results.

Worldwide Forum
With the purchase of any Gastrolyzer® device, you are eligible to become a member of the Gastrolyzer® forum – a place where you can seek answers, offer help or simply discuss HMBT techniques, findings and much more with other healthcare professionals from around the world.
To register, please click here to email us.
To register, please click here to email us.

Where to buy?
We operate through a network of carefully selected distributors worldwide – to find your
nearest distributor, click here
nearest distributor, click here
Case Studies
All Case StudiesBoard of Clinicians
We work with a network of KOL’s in the medical world to make sure the Gastrolyzer® devices are fit for purpose. We are always working to improve our Gastrolyzer® range and if you would like to be a part of this elite group of Clinicians, please contact Bedfont® today.

Dr. Jafari is a highly accomplished consultant clinical scientist in Neurogastroenterology. He serves as both a Senior Lecturer at King’s College London, sharing his expertise with future generations, and as Head of Upper GI Physiology at Guy’s and St Thomas’ Foundation Trust Hospitals, directly impacting patient care. With an MD in Medicine and a PhD in Neurogastroenterology, his research has resulted in over 160 publications in the field. Dr. Jafari’s dedication extends to his specialisation in Hydrogen-Methane as well as C13 GI breath testing, highlighting his ongoing commitment to advancing this area of gastroenterology. Under his leadership, his teams have conducted over 20,000 Hydrogen-Methane breath tests, the majority of which Dr. Jafari has personally reviewed, underscoring his expertise in this area.

Melissa began her career as a Gastrointestinal Physiologist in St. James’s’ Hospital Dublin. During her career, Melissa took a keen interest in Small Intestinal Bacterial Overgrowth and completed a research project titled ‘Small Intestinal Bacterial Overgrowth in Post Oesophagectomy and Gastrectomy Patients’. Melissa is a fully accredited Gastrointestinal Physiologist and is a member of both the Irish Institute of Clinical Measurement Scientists and the British Society of Gastroenterology. Melissa has multiple publications and has presented her research at both national and international conferences. Melissa was awarded the RES MED/PEI award in 2008 by Technological University Dublin (formally Dublin Institute of Technology) for her outstanding academic achievements.
Our Mission
To help improve the detection of gastrointestinal disorders worldwide through hydrogen and methane breath testing (HMBT).
Our Purpose
To highlight the benefits of hydrogen and methane breath monitoring in gastroenterology and make HMBT more accessible globally through an effective yet cost-efficient range of breath devices and equally low-cost consumables.
Customer Charter
What we do:
- Work hard to design and manufacture the most up to date, high quality, innovative products for use by worldwide health professionals.
- Re-invest our profit into future research and development to keep our products up to life saving standards.
- Strive to produce high quality consumables at the lowest possible prices.
- Committed to provide a very high level of quality customer service that takes account of the changing needs and expectations of our customers.
- Work to continuously improve the quality in all that we do.