Which does not act by blocking NMDA receptors-

Ans. is 'd' i.e., Diltiazem o Drugs acting bv blocking NMD A receptors are:i) Methoxetamineii) Methadoneiii) Felbamateiv) Acamprostv) Ketaminevi) Phencyclidinevii) Dizocilpineviii) Dextropropoxypheneix) Tramadolx) Pethidinexi) Atomoxetinexii) Nitrous oxide