Max: 150-600 mg/day. 
Neuropathic pain associated w/ diabetic peripheral neuropathy CrCl at least 60 mL/min Initially 50 mg tid. May be increased to 300 mg/day w/in 1 wk. Max: 100 mg tid. 
Postherpetic neuralgia CrCl at least 60 mL/min 75-150 mg bid or 50-100 mg tid. Initially 75 mg bid or 50 mg tid, may be increased to 300 mg/day w/in 1 wk. 
Patient who does not experience sufficient pain relief following 2-4 wk w/ 300 mg/day 300 mg bid or 200 mg tid. 
Adjunctive therapy for adult patient w/ partial onset seizure 150-600 mg/day in 2 or 3 divided doses. 
Management of fibromyalgia 300-450 mg/day. Initially 75 mg bid, may be increased to 150 mg bid w/in 1 wk & may further increase to 225 mg bid. Doses >450 mg/day is not recommended. 
Neuropathic pain associated w/ spinal cord injury 150-600 mg/day. Initially 75 mg bid, may be increased to 150 mg bid w/in 1 wk. 
Patient who does not experience sufficient pain relief after 2-3 wk w/ 150 mg bid 300 mg bid. 
 Renal impairment CrCl ≥60 mL/min 150, 300, 450 or 600 mg/day bid or tid, 
30-60 mL/min 75, 150, 225 or 300 mg/day bid or tid, 
15-30 mL/min 25-50, 75, 100-150 or 150 mg as single daily dose or bid, 
<15 mL/min 25, 25-50, 50-75 or 75 mg as single daily dose.