Will pregabalin cause tolerance like benzodiazepines? I'm into my second week now and been pretty knocked out and sleepy with this drug, though it has stopped my racing thoughts and calmed me down A LOT, plus stabalised my mood! I'm currently on 100mg 2 x daily, I feel a lot less anxious in familiar settings now such as my house etc, whether that calmness translates into the outside world I'm not sure as I haven't really tested it yet, I suspect I will need a higher dose to feel calm outside. I'm worried this drug works for me really well, then just stops working, is that common? has anyone had continued positive outcomes from long term pregabalin use?