Forever Changes
Bluelighter
Actually, that just means it doesn't get metabolized into something else, not that only 2% reaches your brain. Some drugs get excreted unchanged even though they affect you, for example, the active compound in Amanita muscaria mushrooms. In fact you can drink your urine and keep redosing yourself on the same mushrooms. Sounds like that's probably true with pregabalin too, at least if that line you quoted is true.
well I might save some money, but I think I'll give the urine recycling a miss - I'm not that desperate :D