PMID- 15200740 OWN - NLM STAT- MEDLINE DCOM- 20040921 LR - 20181130 IS - 0300-7995 (Print) IS - 0300-7995 (Linking) VI - 20 IP - 6 DP - 2004 Jun TI - Safety of 25- and 50-mg capsules in the initiation of zonisamide therapy in patients with epilepsy: an uncontrolled, open-label study. PG - 837-42 AB - OBJECTIVE: This study was designed to assess the safety of 25- and 50-mg dosage strengths of zonisamide for initial titration in patients with epilepsy. RESEARCH DESIGN AND METHODS: This phase 3, multicenter, open-label, uncontrolled study conducted at 26 study sites in the United States included male and female patients with epilepsy >or= 12 years of age. After a screening visit, subjects began zonisamide therapy at a dosage depending on their body weight. Zonisamide was titrated to 100 mg/day. MAIN OUTCOME MEASURES: At the study's conclusion, information regarding adverse events (AEs) and body weight was recorded. RESULTS: One hundred forty-three subjects enrolled and received at least one zonisamide dose. Of these subjects, 125 reached at least the 100-mg dosage before terminating the study. Eighty-two subjects (57.3%) experienced at least one AE. Most commonly reported AEs included headache, somnolence, asthenia, rhinitis, nausea, and rash. No significant change in patient body weight was noted during the study (95% confidence interval: -0.1, 0.6). CONCLUSIONS: Study limitations include the open-label design and the lack of direct comparison between lower (25- and 50-mg) and higher (100-mg) starting dosages. Despite these limitations, the 25- and 50-mg zonisamide dosage formulations were well tolerated in this study. FAU - Uthman, Basim M AU - Uthman BM AD - Malcom Randall Department of Veterans Affairs Medical Center; University of Florida College of Medicine and the McKnight Brain Institute, Gainesville, FL 32608, USA. basim.uthman@med.va.gov FAU - Miller, G Steven AU - Miller GS FAU - Montouris, Georgia AU - Montouris G FAU - James, Steven P AU - James SP FAU - Anthony, Stacy AU - Anthony S CN - Zonisamide 501 Study Group LA - eng PT - Clinical Trial PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't PL - England TA - Curr Med Res Opin JT - Current medical research and opinion JID - 0351014 RN - 0 (Anticonvulsants) RN - 0 (Isoxazoles) RN - 459384H98V (Zonisamide) SB - IM MH - Adult MH - Anticonvulsants MH - Dose-Response Relationship, Drug MH - Epilepsy/*drug therapy MH - Female MH - Humans MH - Isoxazoles/*administration & dosage/adverse effects/therapeutic use MH - Male MH - United States MH - Zonisamide EDAT- 2004/06/18 05:00 MHDA- 2004/09/24 05:00 CRDT- 2004/06/18 05:00 PHST- 2004/06/18 05:00 [pubmed] PHST- 2004/09/24 05:00 [medline] PHST- 2004/06/18 05:00 [entrez] AID - 10.1185/030079904125003629 [doi] PST - ppublish SO - Curr Med Res Opin. 2004 Jun;20(6):837-42. doi: 10.1185/030079904125003629.