<prompt> Nootropic drugRivastigmineTacrineAmantadinePiracetam  <response>: Ans. d Piracetam. Ref. KD Tripathi, Pharmacology, 4th ed., 481CEREBROACTIVE DRUGS COGNITION ENHANCERS1NootropicPiracetam2Metabolic enhancerDihydrergotaxine,Nicergoline,Piribedil3Cholinergic activatorTacrine4Vasoactive cerebral protectorsPyritinol, Ginko biloba.Educational Points:DRUGUsed in Rx of:Newer cholinesterase inhibitors Donepezil, Revastigmine, Galantamine Mementine NMDA antagonistAlzheimers diseaseRiluzoleAmyotropic lateral sclerosisD2 receptor blockers Chlorpromazine, haloperidolHuntingtons choreab-IFN, Glatiramer NatalizumabMultiple sclerosisTemozolomide, an orally administered alkylating agent, has replaced nitrosureas, including carmustine BCNU and lomustine CCNU, as the most widely used chemotherapeutic agent for :High-grade gliomas. 