A Within-Subject Cross-Over Comparison Between Immediate Release and Extended Release Adderall
试验速览
- 阶段
- 4 期
- 状态
- 已完成
- 入组人数
- 62
- 试验地点
- 1
- 主要终点
- Medication Event Monitoring System (MEMS®) Dosage Adherence
研究概览
简要总结
The purpose of this pilot study is to compare Adderall ® and Adderall XR ® in terms of their effectiveness and side effects for the treatment of ADHD in adults.
详细描述
This will be a randomized, cross-over study in which adults with ADHD will receive three weeks of treatment with Adderall (IR) (15, 30, or 45 mg TID) and three weeks of treatment of Adderall XR (XR) (15, 30, or 45 mg QD) for evaluation of dosing adherence and treatment efficacy. The order of the two conditions (TID-QD or QD-TID) will be counterbalanced across subjects, with a washout period in between treatment periods. Participants will be required to come to the site for 9 visits over approximately an 8-week period.
The study will consist of the following four phases:
-
Phase 1
-
Screening Visit (Visit 1)
-
Treatment "A" Baseline Visit (Visit 2)
-
Phase 2
o Treatment Period "A" - participants will take either Adderall or Adderall XR for 3 weeks (Visits 3-5)
- Phase 3
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Single (Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 55 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •At the time of consent, are between the ages of 18-55, inclusive.
- •Meet DSM-IV criteria for ADHD as assessed by the Adult ADHD Clinician Diagnostic Scale (ACDS) v1.
- •Female participants of childbearing potential must test negative for pregnancy at the time of enrollment based on a urine pregnancy test and agree to use a reliable method of birth control during the study. Females of childbearing potential are defined as women not surgically sterilized and are between menarche and 2 years post-menopause.
- •Must have a satisfactory medical assessment with no clinically significant abnormalities as determined by medical history, physical exam, ECG, and clinical laboratory testing.
- •Must be able to swallow capsules.
- •Must be able to begin the daily dose of study medication in the morning.
- •Must be off previous amphetamine or methylphenidate treatment for 1 week prior to baseline (visit 2). Must be off past non-stimulant ADHD medication (i.e., atomoxetine) for 3 weeks prior to baseline (visit 2).
- •In the opinion of the investigator, the subject must understand and be able, willing and likely to fully comply with the study procedures and restrictions.
- •Must have given signed and dated informed consent in accordance with Good Clinical Practice (GCP) Guidelines.
排除标准
- •Lifetime or present history of bipolar disorder, schizophrenia or schizoaffective disorder.
- •Uncontrolled comorbid major depressive disorder, anxiety disorder or dysthymia. Participants with controlled depressive or anxiety disorders may participate if their medications have been stabilized for a minimum of four weeks and, in the opinion of the Principal Investigator, will not interfere with adherence, safety, or efficacy assessments.
- •Anyone who meets current DSM-IV-TR criteria for alcohol or any non-alcohol substance abuse or dependence disorder (excluding nicotine).
- •Have organic brain disease (such as dementia) or traumatic brain injury residua. Have a history of seizure disorder (other than febrile seizures) or participants who have taken (or are currently taking) anticonvulsants for seizure control.
- •Females who are currently pregnant or breast feeding, and women of child-bearing potential who are not currently using an adequate form of birth control.
- •Participants with clinically significant ECG or laboratory abnormalities at screening that are deemed exclusionary in the opinion of the Principal Investigator.
- •Participants who work the night shift or another schedule that would preclude beginning the daily dose of study medication in the morning.
- •Participants with a positive urine drug result at Screening.
- •Participants with any concurrent chronic or acute illness or unstable medical condition that could, in the opinion of the study physician, confound the results of safety assessments, increase risk to the subject or lead to difficulty complying with the protocol. Subjects who have a history of mental retardation or severe learning disability will be excluded.
- •Participants with a history of structural cardiac abnormalities as well as any other condition that may affect cardiac performance.
- •Participants with documented history of allergy, intolerance, or non-responsivity to methylphenidate or amphetamines. This includes a history of two or more failed stimulant treatment trials, as deemed by the Principal Investigator.
- •Participants who in the investigator's opinion meet any of the exclusionary criteria specified on the FDA label of either Adderall or Adderall XR.
研究组 & 干预措施
Adderall Extended Release First
This group was treated with Adderall extended release, either during phase 2 of the trial, or during phase 3 (this subset received Adderall immediate release during phase 2 and then underwent a washout period). This was a counterbalanced crossover study, with a washout period in between treatment periods. Participants were randomized in a 1:1 ratio to one of two schedules Adderall IR followed by Adderall XR, or Adderall XR followed by Adderall IR.
干预措施: Adderall ® Immediate Release (Drug)
Adderall Extended Release First
This group was treated with Adderall extended release, either during phase 2 of the trial, or during phase 3 (this subset received Adderall immediate release during phase 2 and then underwent a washout period). This was a counterbalanced crossover study, with a washout period in between treatment periods. Participants were randomized in a 1:1 ratio to one of two schedules Adderall IR followed by Adderall XR, or Adderall XR followed by Adderall IR.
干预措施: Adderall XR ® (Drug)
Adderall Immediate Release First
This group was treated with Adderall immediate release, either during phase 2 of the trial, or during phase 3 (this subset received Adderall extended release during phase 2 and then underwent a washout period). This was a counterbalanced crossover study, with a washout period in between treatment periods. Participants were randomized in a 1:1 ratio to one of two schedules Adderall IR followed by Adderall XR, or Adderall XR followed by Adderall IR.
干预措施: Adderall ® Immediate Release (Drug)
Adderall Immediate Release First
This group was treated with Adderall immediate release, either during phase 2 of the trial, or during phase 3 (this subset received Adderall extended release during phase 2 and then underwent a washout period). This was a counterbalanced crossover study, with a washout period in between treatment periods. Participants were randomized in a 1:1 ratio to one of two schedules Adderall IR followed by Adderall XR, or Adderall XR followed by Adderall IR.
干预措施: Adderall XR ® (Drug)
结局指标
主要结局
Medication Event Monitoring System (MEMS®) Dosage Adherence
时间窗: The MEMS information was noted at clinic visit 3, 4, 5, 7, 8, and 9 (over 8 weeks)
Dosage adherence (MEMSd) is the number of bottle openings divided by number of doses prescribed. Adherence was measured as ≥ 75% of the doses. The number below is the total percentage of subjects who were adherent.
Medication Event Monitoring System (MEMS®) Regimen Adherence
时间窗: The MEMS information was noted at clinic visit 3, 4, 5, 7, 8, and 9 (over 8 weeks)
Regimen adherence (MEMSr) is a percentage of the number of days in which the complete dose regimen was taken as prescribed. Adherence was measured as complete dose regimen taken on ≥ 90% of days. The number below is the total percentage of subjects who were adherent.
Medication Event Monitoring System (MEMS®) Time Adherence
时间窗: The MEMS information was noted at clinic visit 3, 4, 5, 7, 8, and 9 (over 8 weeks)
Time adherence (MEMSt) is the percentage of doses taken as prescribed within a specified time period. Adherence was measured as ≥ 80% of doses taken at the correct time. The number below is the percentage of subjects who were adherent.
次要结局
- Pill Count(At clinic visit 3, 4, 5, 7, 8, and 9 (over 8 weeks))
- Self Report(At clinic visit 3, 4, 5, 7, 8, and 9 (over 8 weeks))