1. The use of water with low content of deuterium (DDW) for preparing a combined pharmaceutical composition for the prevention or treatment of tumor diseases, wherein the composition comprises DDW with deuterium (D) in the range from 0.01 to 135 ppm and one or more antineoplastic agents, optionally together with one or more conventional pharmaceutical auxiliary materialami.2. Use according to claim 1, characterized in that the shape of the combined composition is selected from the following:. Infusion solution, injection, solution for intraperitoneal administration, a solution for irrigation, inhalation solution or solution for klizm.3. Use according to claim 1 or 2, characterized in that the anticancer agent is selected from the following:. Tyrosine kinase inhibitors, alkylating agents, antimetabolites, alkaloids herbs, cytotoxic antibiotics, monoclonal antibodies, anti-androgens, platinum compounds, topoisomerase inhibitors, metilgidrazidy.4. Use according to claim 3, characterized in that the anticancer agent is selected from the following:. Glivec, 5-Fluorouracil, Taxotere, Taxol, Carboplatin, Herceptin, Tarceva, Gemzar, Cisplatin, Avastin, Alinta, Androkur, Estratsit, Zoladex, Xeloda, Doxorubicin, Irinotekan.5. Use according to Claim. 1 or 2, characterized in that the anticancer agent is used in an amount reduced to 80-10% of the standard dozy.6. Combined pharmaceutical composition for adjuvant treatment of neoplastic diseases comprising water with a lowered deuterium content (DDW), containing a deuterium (D) in the range from 0.01 to 135 ppm, and one or more antineoplastic agents neobyazat1. Применение воды с пониженным содержанием дейтерия (DDW) для приготовления комбинированной фармацевтической композиции для профилактики или лечения опухолевых заболеваний, причем композиция включает DDW с содержанием дейтерия (D) в диапазоне от 0,01 до 135 м.д. и один или несколько противоопухолевых агентов, необязательно совместно с одним или несколькими стандартными вспом
