Specifications: The proper level of magnesium content in the human body determines the correct working of the immune and neuromuscular systems. It prevents stress, fatigue and insomnia, reduces anxiety, the effects of alcohol, and helps the body to rid itself of heavy metals such as lead and mercury. Calcium is the main building material of bones and teeth and controls blood coagulability. Not only does it have a desensitising effect, but it also seals blood vessels in allergies, controls the balance in the states of neuromuscular excitability, prevents osteoporosis and, when coupled with magnesium, prevents the transfer of heavy metal ions from intestines to blood vessels. Sodium controls osmotic pressure in cells, which is important for the acid-base equilibrium in our bodies, and it also regulates their water balance. Potassium, the basic component of the human cell, plays a crucial role in the contraction processes of the heart and other muscles, and in the production of proteins and fats. Selenium prevents liver damage and increases our resistance to ionising radiation. It belongs to the so-called scavengers of free radicals, which contribute to the development of cancer. Fluorine is part of the enamel and the bone tissue. It protects teeth against caries. "Cisowianka" is a wonderful mineral water from the ecologically clean area of Naleczow. It has been tested and certified by the Academy of Mining and Metallurgy in Cracow and the Institute of Health Resort Medicine in Poznan.