SLI381 (Adderall XR), a Two-Component, Extended-Release Formulation of Mixed Amphetamine Salts: Bioavailability of Three Test Formulations and Comparison of Fasted, Fed, and Sprinkled Administration
作者:Simon J. Tulloch、Yuxin Zhang、Angus McLean、Kathleen N. Wolf
DOI:10.1592/phco.22.16.1405.33687
日期:2002.11
Study Objectives. To assess the bioavailability of three test formulations of a single dose of extended-release Adderall 20-mg capsules compared with two doses of immediate-release Adderall 10-mg tablets, and to assess the bioequivalence of a single 30-mg dose of the chosen extended-release Adderall formulation (designated as SLI381) administered in applesauce (sprinkled) and the same dose administered as an intact capsule with or without food. Design. Randomized, open-label, crossover study. Setting. Clinical research unit. Patients. Forty-one healthy adults. Interventions. Study A had four treatment sequences: three test formulations (A, B, and C) of a single dose of extended-release Adderall 20 mg, and two 10-mg doses of Adderall given 4 hours apart. Study B had three treatment sequences: a single dose of SLI381 30 mg as an intact capsule after overnight fast, an intact capsule after a high-fat breakfast, and the contents of a capsule sprinkled in 1 tablespoon of applesauce. Measurements and Main Results. The 20-mg test formulation A had comparable pharmacokinetic profiles and bioequivalence in rate and extent of drug absorption to Adderall 10 mg twice/day for both d- and l-amphetamine. Formulations B and C had statistically significant differences from the reference drug in some pharmacokinetic parameters. A 30-mg dose of SLI381 showed no significant differences in rate and extent of absorption of d- and l-amphetamine for fasted or sprinkled conditions compared with the high-fat meal condition. Conclusion. SLI381 20 mg/day is bioequivalent to Adderall 10 mg twice/day. SLI381 30 mg administered in applesauce is bioequivalent in terms of both rate and extent of absorption to the same dose administered as an intact capsule in both fasted and fed states.
研究目的:评估单剂量缓释Adderall 20毫克胶囊的三种试验制剂与两剂量即释Adderall 10毫克片剂的生物利用度,并评估所选择的缓释Adderall 30毫克单剂量制剂(指定为SLI381)以苹果泥(撒粉)形式给药与相同剂量完整胶囊给药(有无食物)的生物等效性。设计:随机、开放标签、交叉研究。环境:临床研究中心。对象:41名健康成人。干预:研究A有四个治疗序列:三种试验制剂(A、B、C)的单剂量缓释Adderall 20毫克,以及间隔4小时的两剂10毫克Adderall。研究B有三个治疗序列:过夜禁食后单剂SLI381 30毫克完整胶囊,高脂早餐后完整胶囊,以及1汤匙苹果泥中撒粉的胶囊内容物。测量与主要结果:20毫克试验制剂A在d-和l-安非他命的药物动力学曲线与生物等效性方面与Adderall 10毫克每日两次相当。制剂B和C在某些药物动力学参数上与参照药物存在统计学显著差异。SLI381 30毫克在d-和l-安非他命的吸收速率和程度方面,禁食或撒粉条件下与高脂餐条件下无显著差异。结论:SLI381 20毫克每日一次与Adderall 10毫克每日两次生物等效。SLI381 30毫克以苹果泥形式给药在吸收速率和程度方面与禁食和进食状态下完整胶囊给药等效。