That's hard to say. It seems like there are some people that really respond to memantine (e.g., confidence, clear head, etc.) and others that get just the opposite effects from memantine. I am one of the latter. I get tremendous brain fog, impaired cognitive function and disassociation with memantine. It does, however, have a place in my stack since it resets tolerance to some of my other supplements. To me it is sort of like a necessary evil. I endure many hours of brain fog in order to get back the positive effects of my other supplements for 3-4 days.
It seems like there are two camps on the memantine. Those who respond really well and those who respond negatively. Since you and I are in different camps, I don't know if it makes sense for me to offer advice. All I can say is that for me uridine started working immediately and is the best addition to my stack in two years (after piracetam). I have been able to totally stop taking heavy 5Htp and light rasagaline due to the uridine. I am currently eyeing other supplements that I may be able to jettison also (piracetam??). Hopefully, you'll be able to find a way to make uridine work for you.
I've read in other forums that memantine requires an adaptation period before all the brain fog goes away. Memantine antagonizes the NMDA receptors which causes brainfog but then the NMDA receptors upregulate/sensitize or something like that and then mental cognition is supposed to actually enhance. Search through mind & muscle forums for a lot more specific info. I don't know if this also is of any relevance but when a lot of the mind & muscle forum users were posting on using memantine with amphetamine (for tolerance prevention), they said that during the adaptation phase amphetamine was pretty useless and didn't work, so maybe after the adaptation phase you could keep taking memantine for reset of tolerance for your supplements while still keeping taking them. Hope this helped.
Btw, adaptation phase for memantine in most users was about 1 week using 10 or 20mg and then the brain fog went away after that. You also have to use it consistantly, like everyday or else your NMDA receptors won't adapt.
Edited by Gamerzneed, 16 February 2012 - 11:56 PM.