Table 2.

Estimated dose for anticonvulsant drugs included in a chart review of 347 patients

Drug	Estimated dose (mg)
	Units	N	Median	Min	IQ 25 %	IQ 75 %	Max
Gabapentin		94	6,000	300	2,700	12,000	96,000
Levetiracetam		11	15,000	1,000	2,500	29,250	50,000
Lamotrigine		53	1,000	200	400	2,000	50,000
Pregabalin		18	2,375	100	1,000	6,000	9,000
Tiagabine		10	28	12	16	48	144
Topiramate		43	750	100	400	2,000	30,000
Oxcarbazepine		45	3,150	60	1,800	6,600	36,000
Drug	Standardized dose (dose/max daily dose)
	N	Median	Min	IQ 25 %	IQ75%	Max
Gabapentin	94	1.7	0.1	0.8	3.3	26.7
Levetiracetam	11	5.0	0.3	0.8	9.8	16.7
Lamotrigine	53	2.5	0.5	1.0	5.0	125.0
Pregabalin	18	4.0	0.2	1.7	10.0	15.0
Tiagabine	10	0.5	0.2	0.3	0.9	2.6
Topiramate	43	1.9	0.3	1.0	5.0	75.0
Oxcarbazepine	45	1.3	0.3	0.8	2.8	15.0