Modern medicine pays a great attention to environmental security, i.e. to elimination of adverse health effects due to environmental factors. From the end of twentieth century, the environment became a source of urban and industry induced threats, such as: air and water microbe and chemical pollution, increased levels of ionizing radiation, and high risk of traumas. Essentially, the food, as very important environmental factor, has also changed in the modern era due to new agriculture technologies, refining, synthetic food additives, the influences of ultra-high and ultra-low temperatures, gene engineering, etc. On the other hand, one of the important achievements of the modern medicine is an introduction of functional foods for maintenance of homeostasis of human metabolism under the current environmental conditions. Imbalance between free radicals in organism induced by a variety of stresses and dietary antioxidants is one of the factors damaging human health. Bioantioxidants, i.e. antioxidants naturally engaged in metabolism, are of special value for medical purposes of prevention, treatment and rehabilitation. The adverse effects related to the bioantioxidant deficiency are generated by the accumulation of products arising from oxidation induced by free radicals. An increased need for bioantioxidants may emerge under specific conditions: (1) stress, (2) exposure to ionizing radiation, xenobiotics and another harmful man-made factors of the environment, (3) too much or too little physical activity due to traumas and rescue efforts, (4) administration of pharmaceuticals activating processes of oxidation induced by free radicals, such as antibiotics, narcotic and non-narcotic analgesics, and non-steroid anti-inflammatory preparations. The alcohol-free dietary concentrate Enoant developed by the National Institute for Vine and Wine "Magarach" represents a practical approach to use the Cabernet Sauvignon grape for prevention and treatment of various maladies. Experimental and clinical studies have shown curative and preventive benefits of Enoant as a part of methodology used in catastrophe medicine. These may contribute to the achievement, with better effectiveness, of clinical goals in complex treatment and rehabilitation of humans, possessing impaired functions of the cardio-respiratory system, red blood cells, the antioxidant system and lipid metabolism by improving the immunity and lessening of toxic side effects of radiation and pharmacotherapy. Data from experiments and clinical studies on effects exerted by Enoant indicate that the criteria for optimization of medical technologies should include both a sufficient daily dose of the concentrate and the absence of individual negative reactions or grape-induced allergy.