It has been established in experiments on white rats that prolonged (for 2 weeks) intoxication with antituberculous drugs (isoniazid plus rifampicin plus pyrazinamide) results in cytolytic liver injury. This manifests by hyperaminotransferasemia, initiation of lipid peroxidation, suppression of the antioxidant system and bile production. Daily injections of tocopherol acetate (15 mg/kg) and riboxine (100 mg/kg) together with administration of antituberculous drugs reduce their hepatotoxicity. The combined use of these hepatoprotectors and antioxidants provides a dramatic increase of their efficacy in durable intoxication with antituberculous drugs.
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