Axsome Therapeutics Inc.’s AXS-05 (dextromethorphan + bupropion) has notched another success by hitting its phase III primary endpoint in treating a notoriously difficult Alzheimer’s disease (AD) indication when compared to placebo. Newly released data from the Accord study showed AXS-05, an oral, NMDA receptor antagonist with multimodal activity, statistically significantly delayed time to relapse of AD agitation vs. placebo (p=0.014), which was the primary endpoint.