A pharmaceutical composition having antialcoholic activity, stimulating energy metabolism and acid-forming and secretory functions of stomach mucosa, having radioprotective and anticholera activities contains a mixture of succinic acid and citric acid or pharmaceutically acceptable salts thereof as an active ingredient.A method for preventing and treating alcohol intoxication and alcohol abstinence syndrome, stimulating energy metabolism stimulating and diagnosing acid-forming and secretory functions of stomach mucosa, protecting against radiation damage and preventing cholera which comprises oral administration of an effective amount of the present composition.