The invention relates to pharmaceutical and food compositions for the prevention or treatment of allergic diseases and a process for the preparation thereof. The process of the invention comprises mixing water having 0.01-135 ppm deuterium content (preferably prepared by known electrolysis or distillation) with usual additives, and formulating this mixture by usual pharmaceutical or food industrial methods to pharmaceutical or food products, preferably by applying standard flavors, aromas and other additives used in the manufacturing of medicines, non-alcoholic drinks or beer.
