Scientists the scientific method proved that the consecrated water changes its quality. After the grace of sanctification it has healing properties that it has been observed by Christians since the first centuries.
The most common use of Holy water is its ingestion. Holy water can be drunk in a variety of diseases and ailments. It is necessary to know that Holy water must be taken with prayer and reverence. There are recommendations, what to drink Holy water, preferably on an empty stomach. However, nobody forbids to use this great Shrine and in the evening, when it was a few meals.
When a person takes in the morning Holy Eucharist, antidoron or that Shrine, it is recommended to drink Holy water with reverence and prayer.
There is a practice of adding Holy water in food. This is done for the grace of sanctification of food. However, it is necessary to add so much that it didn't hurt the dish itself.
Except that Holy water you can drink in the disease, it is recommended to anoint the sick place, and sometimes even to wash. In diseases of the joints, you can wet the bandage in the Holy water and put a bandage (these recommendations can give the clergy).
Holy water not only to drink for healing and shared the grace of sanctification, to use when adding to food. There is a tradition of sprinkling Holy water on houses and apartments. This Shrine is used by the priest for the consecration of the home or other items. The Church does not prohibit the practice of sprinkling Holy water on their houses and apartments, so some religious people do that sometimes.
Christian needs to take care to this unique divine gift and to keep Holy water in the appropriate place, for example, next to the icons.