I am wondering if taking low dose DXM (90 to 105 mg) every other day could lead to cognitive improvement/enhancement? DXM is structurally related to memantine, which is used for social anxiety/OCD/alzheimers improvement. I have always noticed that low doses always provide a great mood lift and make SWIM feel more like his old self before the traumatic life situations hit him. However insomnia has always been a bitch with DXM, even in low doses, does anyone have any tips on how to fix that? Cheers.