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Journal Article
Review
Clinical conditions requiring elevated dosages of vitamins.
With a normal and varied food intake, the vitamin supply is often sufficient to avoid vitamin deficiency. Since synthetic vitamins have become available, it has become possible to take with one dose the amount of vitamins normally taken up from food in one year. In these pharmacological doses vitamins must therefore be considered as drugs. And in pharmacological doses, their actions are often different and not directly linked to their physiological activity. Two types of pathologic state are unquestionably the concern of vitaminotherapy: More or less specific and intense vitamin deficiencies: Rickets, scurvy, beri beri, pellagra, vitamin deficiency related to alcohol consumption, polyneuritis, encephalopathy, malabsorption, mucoviscidosis, etc. Genetic defects of vitamin metabolism: Prescriptions for these cases represent only a tiny part of the vitamin pharmaceutic market. The prescription of vitamins as adjuvants in other pathologic states without vitamin deficiency, such as neurological pains, psychosis, prevention of common cold, alopecia, anemia, asthenia, carpal tunnel defect, etc., is frequent. The results may be good; however, in some cases, the efficacy is due to chance or placebo effect, and there is no scientific or experimental evidence of beneficial activity. At the moment, the pharmacological vitamin research is very active. New products with vitamin-like structures are being synthesized for specialized therapeutic applications. They will in the near future probably replace elevated and mega-doses for clinical prescription, except, of course, for the treatment of vitamin deficiency. On the other hand, the use of multivitamin preparations in nutritional dosage will greatly increase.
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