About 3 weeks I‘d say. Maybe a bit more or less . It’s really hard to remember but I do know it was a couple of weeks or so. But once it started to really work it was recognizable at once. I could feel a difference quite readily.

I still got/get Allodynia, but I was amazed at how much the Namenda took away. I also still have many other types of "pain" and PN symptoms. Unfortunately there has not been any medicine to help all of my symptoms a lot. Instead, I have a lot of medicines that help a little, and Namenda that does a decent job on the Allodynia - especially for recovery. That was the most beneficial to me. Because like said before, it used to be that when my pain got high it stayed high until I fell asleep, now if it will recede.

I never read up on it once I got the presciption; I didn't want to bias myself in any way. I just waited for the results and since they were positive I never looked into it. So you have found out that others did not have a very positive experience? I am so sorry about that ... It has really helped me for this sort of pain. Well good luck :)

Yes, two drugs are Nuedexta and Namenda that people are getting benifit from.

Some say it does nothing while others like you say it works well.

What sort of symptoms do these drugs help? Just allodynia?

They can also help with pain in general since they work on the NMDA receptors.

There is one other drug that works on Allodynia.

Called Neurotropiin. It's been out in Japan over 30 years and testing in NIH for 10 years.

I spoke to someone who has CRPS and she said it reduced allodinya by 40 percent.

http://clinicaltrials.gov/ct2/show/N...otropin&rank=2

I tried to apply for trial but you need to have CRPS.