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Since 2007, more than 1000 scientific articles have been published in a number of world-renowned medical and scientific journals. More than 800 clinical studies have been conducted on patients in a number of hospitals and universities worldwide. They inhaled hydrogen gas (H2) or drank water enriched with it (2-3 liters per day) for 4 to 24 weeks. In some of them the results were impressive. The therapeutic effect of molecular hydrogen has been found in over 170 types of pathologies and a healing effect on every organ of the human body. The 7th European Conference on Hydrogen Medicine in the 21st Century was held in Slovakia and the Czech Republic in October 2019. The organizer of the event was the European Institute for Molecular Hydrogen Therapy /link/.


H2MEDICAL Ltd is a company specialized in the distribution of high quality health products. Here you will find hydrogen water devices with certified medical quality and high concentration of hydrogen gas (H2) for optimal therapeutic effect. Our team was highly impressed by the large number of clinical studies and medical reports showing the therapeutic effects of hydrogen gas. We truly strive to contribute to the health and better quality of life of as many people as possible in Bulgaria! Because health is for everyone and everyone deserves health! We have carefully researched and selected the models we offer. Each of our H2 water generators is manufactured to international quality standards and has the necessary certification to guarantee you 100% pure and efficient hydrogen water. H2MEDICAL LTD provides 2 years of international service warranty for our hydrogen water devices, as well as after-warranty service. Since 2019, H2MEDICAL has become part of the lives of thousands of people. Thank you for your trust!


Why should you choose the hydrogen water appliances of the brand "KYK"?

  • KYK brand appliances are manufactured in South Korea. They are approved and certified by many domestic and international professional quality control organizations.
  • Since its establishment in 1980, the company's products have received more than 100 quality awards.
  • KYK Co Ltd. is an ISO13485 (Quality Management and Control in Medical Equipment Manufacturing) certificate holder.
  • KYK's instruments are manufactured and certified to GMP (International Standards for the Manufacture of Medical Equipment) standards.
  • KYK products are approved and certified as SAFE for use by the FDA (U.S. Food and Drug Administration).
  • KYK holds a safety certificate from the South Korean Atopic Association.
  • KYK products meet 55 quality indicators of the Drinking Water Rating System.
  • Once manufactured, each individual product of the brand is tested and inspected before shipment.


Below are the diseases of greatest social relevance for which clinical studies have shown the therapeutic effect of molecular hydrogen (n2). The information is taken from the website of the Institute of Molecular Hydrogen, where articles and scientific reports on the topic are published.




Due to the great interest in the topic CORONAVIRUS and the many questions received, we have put links to publications on the therapeutic action of MOLECULAR HYDROGEN in PNEUMONIA, EBOLA, SARS(formerly CORONAVIRUS) and other lung infections in the HYDROGEN MEDICINE/links/ menu.


  • Brain, cardiovascular, kidney and lung diseases, diseases of the small intestine and other organs, ischemia and reperfusion injury, recovery after organ transplantation. Molecular hydrogen reduces blood viscosity, improves microcirculation and elasticity of blood vessels.
  • Acute and chronic central nervous system injuries, such as cerebral ischemia, neonatal ischemia and hypoxia, cerebral hemorrhage and post-ischemic hemorrhage, fetal hypoxic brain injury, Parkinson's disease, Alzheimer's disease, senile dementia, and aging.
  • Various inflammations, such as sepsis, hepatitis, pancreatitis and colitis.
  • Drug toxicity, renal and ototoxicity caused by cisplatin. Lung and brain damage caused by paraquat and organophosphorus pesticides.
  • Brain, spinal cord, lymph and gastrointestinal tract damage caused by radiation. Radiation burns.
  • Metabolic diseases, diabetes, obesity, hypertension, arteriosclerosis, etc. Hydrogen gas lowers saturated fat, cholesterol and blood sugar levels.
  • Autoimmune, degenerative and allergic diseases such as asthma, psoriasis, macular degeneration, rheumatoid, etc.
  • Hydrogen causes telomere shortening in cancer cells and inhibits tumor angiogenesis by removing intracellular RBCs, suppressing gene expression and vascular endothelial growth factor secretion. In addition, hydrogen water enhances apoptosis together with glutathione in HL60 cells in human leukemia H2 improves quality of life and outcomes in patients on chemotherapy and radiotherapy by protecting the liver and body from harmful side effects.


The World Health Organization lists Hydrogen Therapy as broad-spectrum with enormous potential. The WHO does not classify H2 as a medicinal or doping agent as it is a natural element in nature and does not have the characteristics of a pharmaceutical product.


What does hydrogen water do in our body? Clinical studies of molecular hydrogen (H2) show:


The molecule of hydrogen gas (H2) is only 2 microns and seamlessly crosses the blood-brain barrier, penetrates nerve cells, mitochondria and the cell nucleus itself.
H2 is the most powerful and effective antioxidant yet discovered. It possesses a unique selective ability - it binds to and neutralizes only health-dangerous free radicals, especially hydroxyl radicals.
H2 acts as a signalling molecule and a central regulator of biochemical processes in the cell. H2 brings the body to a state of homeostasis.
H2 quells inflammation throughout the body and repairs damaged cells and DNA.
H2 significantly improves glucose tolerance, lipid metabolism, cholesterol levels and reduces visceral adipose tissue production.
H2 provides energy and endurance by increasing the production of adenosine triphosphate (ATP) in the mitochondria and reduces muscle fatigue by significantly reducing the release of lactate into the blood during exercise.
H2 acts synergistically with drug therapy, protecting the body from the harmful side effects of drugs. H2 improves the quality of life in patients on chemotherapy and radiotherapy.
H2 has no toxicity. No negative side effects or accumulation in the body have been found as a result of long-term intake of large doses of H2.



Molecular hydrogen (H2) eliminates oxidative stress induced by intense physical exertion. This protects muscle fibres and organs from damage. H2 is the most powerful and effective antioxidant discovered to date (176 times more powerful than vitamin "C").
H2 prevents lactate levels in the blood from rising during exercise. This significantly increases endurance and reduces muscle fatigue. H2 supports recovery after exercise.
H2 significantly increases the production of ATP (adenosine triphosphate) in the mitochondria of cells. This gives the whole body a powerful influx of energy and strength.
H2 improves performance and overall performance of professional athletes and people training for health, tone and energy.
H2 is not classified as a pharmaceutical product or a doping agent. H2 has no toxicity. No negative side effects or accumulation in the body have been identified as a result of long-term high-dose H2 intake.


Learn all about the therapeutic effects of hydrogen gas and hydrogen water intake in the SCIENTIFIC FACTS menu /link/ or visit our BLOG.


Why did millions of people around the world choose HIGEN1+? Why is it better than other tabletop WATER appliances?

When choosing a hydrogen water system for your home or office, SAFETY is most important! A reliable appliance brings you health, and one of questionable quality, hidden harm to the body. HIGEN1+ is a certified medical appliance that has a patented ion exchange membrane of the highest grade. This guarantees you pure hydrogen water free of ozone, residual chlorine and magnesium.
HIGEN1+ is the only hydrogen water generator with a similar COMPACT SIZE. The face of the unit is the size of an A4 sheet of paper and the depth is only 12 cm. This tucked away and sleek design offers you the highest grade of tap water purification and the ultimate dose of health with a hydrogen gas (H2) concentration in the water of over 1600 ppb.
A powerful and intelligent system allows you to choose from 3 HAPID WATER PROGRAMS with low, medium and high hydrogen gas saturation (1000 - 1600+ ppb). The HIGEN1+ is not an alkaline water device, but a water enrichment device for hydrogen gas. Find out the difference between the two types of water and their appliances here /link/.

KYK branded appliances offer you the highest quality in water filtration. A composite filter with a capacity of 3500 litres and 4 components for purifying tap water guarantees you crystal clear water. The activated carbon used is decisive for the taste and quality of the water. KYK uses only high quality activated carbon from Japan and does not compromise its products with cheaper activated carbon from China, Malaysia and the Philippines.
HIGEN1+ has an electrode CLEANING PROGRAM that maintains the high performance of hydrogen gas and makes the service life of the unit over 10 years. The lack of such program in other models limits their life to 5,000 or 10,000 liters of water, and their hydrogen gas performance gradually decreases.
The OZONE WATER PROGRAM offers you an unlimited amount of ozonated water, which has a strong disinfecting and sterilizing effect. Washing your hands, surfaces and food products guarantees 100% disinfection to remove viruses, bacteria, fungi and mycoorganisms. In medicine, ozone water is mainly used in the treatment and prevention of skin diseases.