I take it for peripheral neuropathy, a host of core compression due to spinal cysts, degenerative disc disease (diagnosed in teens, go me lol), osteoarthritis… tl;dr, it’s a bit of a clusterfudge.
I do have some pretty gnarly side effects though. Cognitive changes (like thinking with a brain made of lard), leg swelling, dissociation (I don’t drive thank goodness).
It’s a double edged sword for me. Whilst I can have some moderate neuropathic relief, it isn’t complete pain cover (at the highest dose).
I’ve been on it for over a decade now; I’m at the point where I have been cleared to only take it when needed (not recommended without medical advice, I was cleared to do so by my MDT) as the side effects were outweighing the benefits.
Other folk I know tolerate it well, others have gnarly side effects, for some it works like magic, you really don’t know until you try.
It may not seem like it, but it’s a useful part of my armoury to keep me able to keep living life.
FYI I also use amytriptaline & various opiates (synthetic and otherwise) and have been prescribed gabapentin & carbamazepine over the years. Pregabalin isn’t perfect for me, but it it helps.