I, myself, but we shouldn't compare, one "case" of CRPS isn't the other... I myself am on 2700 mg a day, so 3x (3x300mg), a "dosage" right below the max. for me. My doctor wanted me to have some room to go up should that need ever arise. The rest has been "dealt with" with pain patches (max. buprenorfine). I have chronic recalcitrant (stubborn) CRPS, though. I haven't been offered Ketamine treatments so far. TBH, I'm a little scared of the product, no matter what anyone says.