Rogaška Medical Centre is home to this unique natural healing mineral water, the richest in magnesium.

Donat natural mineral water is around 8,000 years old and has proven healing effects.

Deep underground (between 280 and 600 metres under the surface) the spring water is enriched by minerals from the dissolving rocks (magnesium, calcium, sulphates, hydrogencarbonates) and other elements (CO2).

One litre of Donat contains as much as 1,040 milligrams of magnesium. Magnesium and other minerals give Donat Mg the healing power that soothes and prevents numerous diseases and protects our health. Therefore, it has been successfully used in medicine for several centuries for soothing health problems.

Pearl of nature

This pearl of nature is formed at a depth of 280 to 600 m by the dissolution of rocks rich in magnesium, calcium, sulphates, hydrogen carbonates and a range of other elements required for the correct functioning of metabolic processes in the body. It is accompanied by large quantities of free carbonic acids. The source of the water is constantly renewed. In terms of its age, it is classified among old ground waters of meteoric origin. Using the 13 C method, it was found that the average age of Donat mineral water is roughly 8000 years. The effects the drinking and inhalation of Donat Mg have on our health have been thoroughly studied.

Because of its chemical composition and physical properties, as well as balneological knowledge and medical findings, it has been used for therapeutic and preventive purposes at the Rogaška Slatina health spa for over 100 years. 

Donat Mg can be classified in a group of natural mineral waters that have beneficial effects in the case of certain health problems and that play a protective role in maintaining health. There are quite a few natural mineral waters in the world that have favourable effects on well-being and health, yet those suitable for continuous drinking are few and far between.

Donat Mg’s composition makes it a one-of-a-kind natural mineral water that we can drink throughout our lives.

It is characterised by its exceptionally high mineral content, with over 13 g of matter per litre (together with CO2), of which magnesium alone accounts for 1000 mg/l and calcium for around 300 mg/l. It also contains many other elements and compounds that are beneficial to our health.

Donat Mg is an acidulous or mineral water, which means that it contains more than 1000 mg of its own CO2/l at the spring.


The water is rich in magnesium, calcium and other vital minerals and significantly helps improve our health and treatment.


Donat – natural mineral water with the highest magnesium content – more than 1,000 milligrams per litre.


It is scientifically proven that Donat has a healing effect on the diseases associated with the digestive tract and on many other pathological conditions.