FIELD: medicine, neurology, psychiatry. SUBSTANCE: invention relates to the use of ladanum, ladanum extracts, ladanum components, their physiologically acceptable salts, derivatives and physiologically acceptable salts of these derivatives, pure bosvellic acid, physiologically acceptable salt, derivative, derivative salt as an agent for prophylaxis or treatment of patients with Alzheimer's disease and as an active substance used for these agent preparing. EFFECT: enhanced effectiveness of treatment. 9 cl
