Korean Journal of Biological Psychiatry (생물정신의학)
- Volume 4 Issue 2
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- Pages.265-271
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- 1997
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- 1225-8709(pISSN)
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- 2005-7571(eISSN)
An Open-label, Randomized, Comparative Assessment of the Efficacy and Safety between Tofisopam and Lorazepam in Anxiety Disorder
Tofisopam과 lorazepam의 항불안효과와 안전성에 대한 비교 연구
- Lee, Min Soo (Department of Psychiatry, College of Medicine, Korea University) ;
- Kim, Yong-Ku (Department of Psychiatry, College of Medicine, Korea University) ;
- Kwak, Dong-Il (Department of Psychiatry, College of Medicine, Korea University)
- Published : 1997.12.25
Abstract
Objective : A 4-week, single-blind, parallel group study was conducted to evaluate the efficacy and safety of tofisopam and lorazepam in 32 outpatients with anxiety disorder. Methods : Patients were randomized to receive either tofisopam(N=17) or lorazepam(N=15). The starting dose of tofisopam was 50mg t.i.d. daily, which could be increased to a maximum of 100mg t.i.d. according to the patient's clinical response and side effect. The starting dose of lorazepam was 0.75mg b.i.d. daily, which could be increased to a maximum of 1.5mg b.i.d. depending on the patient's clinical response and side effect. Efficacy evaluations at baseline, week 1, 2, and 4 used the 14-item Hamilton Rating Scale for Anxiety(HAM-A) and Clinical Global Impression(CGI). Tolerability was assessed by response to a nonleading question concerning adverse events. Laboratory parameters including vital sign, EKG, hematological, and biochemical values were measured during trial. Results : No significant differences between HAM-A total scores, two HAM-A factors(psychic, somatic) and CGI severity scores were recorded at any point during tofisopam and lorazepam treatments. However, in each group there was a significant decrease in HAM-A total scores, two HAM-A factor s(psychic, somatic), CGI severity scores over time. The pecentages of patients with tofisopam who at least minimally improved increased from 64.7% at week 1 to 94.1% at week 4. The pecentages of patients with lorazepam who at least minimally improved increased from 40.0% at week 1 to 66.7% at week 4. The pecentages of patients with tofisopam who had not any adverse event increased from 58.8% at week 1 to 87.9% at week 4. The pecentages of patients with lorazepam who had not any adverse event were not changed from 46.7% at week 1 to 46.7% at week 4. Laboratory parameters including vital sign, EKG, hematological, and biochemical values showed no significant changes during the trial in both groups. Conclusion : These data suggest that tofisopam may be effective in reducing anxiety and is a anti-anxiety drug of identical potency with lorazepam. Tolerability of tofisopam was superior to lorazepam. These findings should be confirmed by using double-blind crossover study with a large member of patients.
2,3-benzodiazepine계 항불안제인 tofisopam의 항불안 효과 및 안전성을 조사하기 위해 단일맹검 비교연구를 시행하였다. 외래로 내원한 불안 장애 환자 40명을 대상으로 무작위로 tofisopam군과 lorazepam군으로 할당하였으며, 최종 연구를 완결한 환자는 tofisopam군 17명(남자 7명, 여자 10명), lorazepam군은 15명(남자 6명, 여자 9명)이었다. 초기용량으로 tofisopam군은 50mg을 하루 3회 복용하고, lorazepam군은 0.75mg을 하루 2회 복용하도록 하였으며, 임상상태와 부작용에 따라 용량을 임의로 증감하도록 하였고, 일일 최대 용량은 tofisopam군 300mg, lorazepam군 3mg으로 하였다. 임상상태에 대한 평가는 Hamilton rating scale for anxiety(HAM-A)와 Clinical global impression(CGI)으로 하였으며, 약물 투여전과 투여 1주후, 2주후, 4주후에 측정되었다. 결과는 다음과 같다. 1) HAM-A 총점수의 경우, 약물 치료군과 시점을 변인으로 한 two-way repeated-measure ANOVA에서 양군간에 시점에 따른 유의한 차이는 없었다. HAM-A 심리적 불안과 신체적 불안아척도 점수에서 양군간 시점에 따른 유의한 차이는 없었다. 각 군에서 HAM-A 총점수의 시점에 따른 유의한 변화를 나타내었으며, 양군 모두 1주후부터 유의한 감소를 나타내었다. 2) CGI의 질병의 전반적인 심각도에서 약물 치료군과 시점을 변인으로 한 two-way repeated-measure ANOVA에서 양군간에 시점에 따른 유의한 차이는 없었다. 각 군에서 CGI 심각도의 시점에 따른 유의한 변화를 나타내었으며, tofisopam군은 1주후부터 lorazepam군은 4주후부터 유의한 감소를 나타내었다. CGI 호전도에선 각 시점에서"minimally improved"이상을 보인 환자군이 tofisopam군이 94.1%로서 lorazepam군 66.7% 보다 높았다. 3) 안전성 분석에서 각 군에서 생명징후, 혈액학, 생화학, 심전도, 체중에서 유의한 변화를 보이지 않았다. 4) 부작용 면에서 tofisopam군이 lorazepam군보다 각 시점에서 부작용을 호소한 환자수가 적었다. 이상에서 tofisopam은 lorazepam과 유사한 항불안효과를 보였으며, 내약성은 lorazepam에 비해 우수하였다.