Prophylaxis and treatment of pellagra (PP vitamin deficiency); complex therapy ischemic disorders of cerebral circulation, obliterating diseases of the vessels of the extremities (obliterating endarteritis, Raynaud's disease) and kidneys, complications of diabetes mellitus (diabetic polyneuropathy, microangiopathy); liver diseases (acute and chronic hepatitis), gastritis with low acidity, neuritis of the facial nerve, various intoxications (professional, medicamentous,alcoholic), long-term non-healing wounds and ulcers.