About DDW


  • QLARIVIA – Immaculate Water

    Nature Rediscovered by Science

Hydration Innovation

QLARIVIA is Deuterium Depleted Water, an absolute innovation in the way we hydrate our bodies. Because QLARIVIA contains only 25 parts per million deuterium, 6 times less than the water we normally drink, it lowers the deuterium levels in our body at cellular level and helps us maintain our general wellbeing.

Holistic Approach To Wellness

QLARIVIA is easily integrated into a healthy lifestyle.

Drink QLARIVIA every day and benefit from the long term effects of balancing deuterium in your body.

Certified Quality

QLARIVIA is made following the highest quality standards.

QLARIVIA has a special mineral content that gives it a slightly basic pH and its great taste.

QLARIVIA is nitrate and nitrite-free and is bottled in BPA-free plastic.

What Is Deuterium?

Deuterium is one of the three hydrogen isotopes. The nucleus of most hydrogen atoms in nature contains one proton, but the nucleus of some hydrogen atoms can contain one proton and one neutron or one proton and two neutrons.

The first and the most common isotope of hydrogen is call protium (chemical symbol: 1h), the second is named deuterium (chemical symbol: 2h or d), and the third one is tritium (chemical symbol: 3h or t). Protium and deuterium are stable isotopes, but tritium is an unstable one.

The abundance of deuterium in the water on earth is approximately one deuterium atom to 6.400 hydrogen atoms (156,25 parts per million-ppm), or 0.0156%. This deuterium concentration changes very little from a natural water source to another.

The deuterium concentration in the adult human body is approximately of 120 to 140 ppm. Although it doesn’t seem much, if we compare this concentration with concentration in plasma of other vital elements, we can see that deuterium is present in an amount six times greater than calcium and ten times greater than magnesium.

Deuterium Properties

Deuterium can have kinetic isotopic effects different than hydrogen has, and the physical and chemical properties of the deuterium compounds differ from those of hydrogen compounds. For example, D2O (heavy water) is more viscous and heavier than H2O (normal water).

Heavy water is approximately 10% more dense than normal water, enough for the ice formed of heavy water to sink in normal water.

The differences in connection energies and lengths of hydrogen isotope compounds are greater than the isotopic differences for any other element. The bonds between deuterium and tritium are stronger than those with hydrogen, these differences being enough to produce important changes in biological reactions.

Heavy water is toxic to eukaryotic organisms. If 25% of the water in the organisms is replaced by heavy water, problems in cell division and reproduction appear. If 50% of the water is replaced, the eukaryotic organisms die.

Deuterium In Nature​

The deuterium content of waters, with minimal fluctuations: in the temperate climate area – 150 ppm (parts per million) D/(D+H), at the Equator – 155 ppm, in northern Canada – 135 ppm. The deuterium quantity in water varies not only with latitude but also altitude (with a values ranging between 150 ppm at sea level and 130 ppm at heights above 3000 meters).

The deuterium concentration in an adult organism is of about 12-14 mmol/l (millimoles per liter). Although it doesn’t seems much, compared to the concentrations of other vital elements in the blood, deuterium is approximately six times more than calcium and ten times more than magnesium.

The deuterium quantity measured in the organisms that live in a certain geographic area is proportional with the deuterium concentration of the water in that area.



The production of Deuterium Depleted Water (DDW) was started, for the first time in the world, in Romania using a unique patented technology. First customer of the Romanian DDW was the Hungarian company, HYD LLC, which used it to launch his brand, PREVENTA.


The DDW technology was acquired by Mecro System SRL.


Mecro System launched QLARIVIA – a Romanian drinking water with lowest deuterium content on the market, at that time – 25ppm D/(D+H).


Mecro System launched QLARIVIA Q18 – 18 ppm D/(D+H) – a Romanian drinking water with a deuterium content of 8 times lower than normal water.


Qlarivia has customers in more than 52 countries.

The process for creating Qlarivia has received awards and prizes at international salons of invention in Brussels, London, Geneva and Budapest.

More Information

  • Negative Effects of High Level of Deuterium Concentrations (Heavy water)

    Higher concentrations of heavy water kills fish, amphibians and insects. Experiments conducted on rodents showed that a high level of deuterium of as much as 25% in the body water causes sterility, because neither the gametes nor the zygotes can develop.

    Small mammals such as rodents die after approximately a week of consuming heavy water. The cause of death is similar to that of cytotoxic poisoning (the case of chemotherapy) or acute radiation syndrome.

  • Health Benefits Of Deuterium Depleted Water

    Many scientific studies were published, claiming the benefits of deuterium depleted water. The most effective way of reducing the quantity of deuterium in our body is to directly consume water with a low content of deuterium.

    Looking for DDW 25 ppm? Just drink 0.5L Qlarivia!

    Or looking for DDW 85 ppm? Just mix 0.5 liter Qlarivia with 0.5 liter of drinking water!

    Perhaps DDW 105 ppm? Just mix 0.5 liter Qlarivia with 1.0 liter of drinking water!

  • Scientific Research

    The biological effects of deuterium depleted water were studied on plants, animals and humans and the results published in scientific papers.
    These benefits can be grouped as following:

    Experiments on plants have shown an increase in productivity, as much as 56% in the case of wheat and 250% in cucumbers.

    Experiments on chickens subjected to radiation have shown a reduction in mortality by 50% and an increase in the egg production

    Experiments on rodents led to an increase in the life expectancy by as much as 50% in the animals that consumed deuterium depleted water.

    The mechanisms that lead these biologic effects are little known and they probably have to do with the changes suffered at the interference of deuterium with the nuclear structures and the structures of cell enzymes, caused by the replacing of deuterium bonds with hydrogen bonds, which are more favorable to the efficient functioning of living cells.