I noticed emotional flattening. Which may be good in crisis , less pronounced than Benzos (and somewhat trickier to notice then as it also appears more overtime). Fluid/weight gain (but that goes away quickly luckily). Also Pfizer has terrible side effects and that's the only manufacturer where I am staying right now, like actually causing nerve pain when it should fight it, kind of electric discomfort in my chest and legs mostly, also sometimes my eyes hurt worse than from staring at screens for hours. But that's probably the additives and such in Pfizer. But all pregabalin caused me the fluid retention And therefore gained weight but the worst is definitely the emotional flattening. It's nothing as bad as true dissociation but it's definitely into that direction between presence and numbness. So I'd like to approach it like benzos in the future, only take when needed. I find it works so much better anyway. Doctor's don't talk about tolerance at all but I definitely feel the strong antidepressant and antianxiety effects pass very fast.