I really can't imagine that it's worth it. Then again, snorting it works incredibly well and is a lot better than eating it imo so who knows. It might be decent if you can somehow extract it, but like Tryptamite said, would be really hard to prep it
If u extracted the pregabalin u could experiment with safe solvents like PG or different salts with higher h2o solubility I'm pretty sure its commercially available as the freebase
^I've snorted it, it didn't seem to do anything in terms of kicking in harder or faster. In fact, the jury is out as to whether it even had any effect, the few times I snorted it I was already pretty high.
I used to open the capsules and dissolve them in liquid- thats the only method that has woked in terms of getting this stuff to start working a bit faster but I don't believe it changes bioavailabilty or anything significant.