Do you get relief the next day from taking it the night before?

I've also read about Gaba causing neuropathy or making it worse for some people. I really wonder why. I've even read about people taking it just for anxiety or insomnia, and reacting with nerve pain. One of the reasons I haven't tried it.

I believe the relief does hang over all the way into the next afternoon. But every time I go on this drug I want off of it . If I do go off of it I find myself having to return to it because of the pain level.

I would say if you can avoid taking it to do so. It's a masking drug. It isn't a cure. It attempts to trick the brain to not see the pain signals that are being sent from the nerves. But there are clear side effects and I really think it's a survival issue. For some they have no choice but to take it. It's not something I think anyone should be on long term. I found Lyrica got rid of a lot of the pain but it was an awful drug to take, total zombie time, walking around like Frankenstein and cymbalta made me literally want to end my life.

I notice a difference in the food myself but I am not pain free either way. A milder low carb no dairy diet is the best tolerated for me but it is miserable like you said. Oddly enough I have felt caffeine helps my pain which goes against what everyone says to do.

Anything artificial, sweetener, coloring, processed anything, etc... Those can take my sfn to another level though. I can go from a mild burning to an intense electrical buzzing that will have me house bound for days. I assume sfn affects everyone different.

Is it the same pain level prior to starting it or worse?

MSG can be a huge trigger for symptoms. It is an inorganic glutamate salt, and stimulates the NMDA pain receptors.

It triggers me hugely. Also too much nutrasweet... with its aspartic acid should be avoided. It is also a NMDA agonist.
Some supplements have aspartate in them... avoid those too.
Magnesium aspartate is one example.

Having adequate magnesium levels works as an NMDA antagoinst though, and that is why magnesium is so helpful for PNers and diabetics.