before i started getting the 4 hours infusions a year a half ago (I've had 4 now, anywhere b/t 1000mg and 2000mg) i took ketamine regularly as my pain med. i started at 20mg/cc taking 2cc's every 2 hours, then bumped up to 3cc's after about 2 weeks. then once i began the infusions and they'd start to wear off (i'm up to 6 months completely pain free and off all meds after them) my pm bumped it up to 50mg/cc still at 2-3 cc's every 2 hours as needed. the first 15 min is usually only when i felt the real side affects... and that was just till i got used to it. its the only drug my body hasn't fully gotten used to and has continued to help my pain with only the one increase in dosage after 3 years.
lol i heart my special k