Conditions: ADHD Attention-Deficit/Hyperactivity Disorder, Predominantly Inattentive Type
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 300
Healthy volunteers: no

Brief summary:
This study is a multisite, randomized, double-blind, placebo-controlled, phase 2/3 study of MG01CI (1400 mg daily) for 6 weeks compared with placebo in a 1:1 ratio of 300 adults with ADHD.

Detailed description:
This study is a multisite, randomized, double-blind, placebo-controlled, phase 2/3 study of MG01CI (1400 mg once daily) for 6 weeks compared with placebo in a 1:1 ratio of 300 adults with ADHD. The study comprises a Screening Visit at which initial assessment will be made and then a Washout Period during which prospective subjects must discontinue ADHD medication for 14 days (for psychotropic medications other than fluoxetine) or for 28 days (for fluoxetine) before randomization into the study. The Washout Period is 14 days, but may be extended to 28 days for a fluoxetine washout. Subjects requiring either a 14-day or a 28-day Washout Period will have an Interim Visit (off drug) on or about Day -8 (Day -10 to Day -3) for CAARS-Inv assessment after the Washout Period. The Baseline CAARS Inv assessment will be conducted on Day 0. If there is a ≥25% change in the CAARS-Inv results between the Interim Visit (off drug) assessment and the Baseline assessment, or if the subject does not return for the Baseline CAARS-Inv assessment, the subject will not be randomized. For subjects not needing washout, if there is a ≥25% change in the CAARS-Inv results between the Screening Visit assessment and the Baseline assessment, or if the subject does not return for the Baseline CAARS-Inv assessment, the subject will not be randomized. Following the Washout Period for those requiring a washout, or following the Screening Visit for those subjects who do not require a washout, eligible subjects will undergo baseline assessments and be randomized on Day 0 to MG01CI 1400 mg or to matching placebo and begin the Double-blind Treatment Period. The Double-blind Treatment Period will be 6 weeks in duration. There will be a 2-week Follow-up Period after the last dose of study treatment or early termination.

Arms:
arm 1: Placebo tablet identical in appearance to study investigational product Route, frequency: Administered orally once daily arm 2: MG01CI (Metadoxine Immediate-release/Slow-release, Bilayer Caplet) Dose, route, and frequency: 1400 mg administered orally once daily

Interventions: intervention 1: MG01CI (1400 mg) intervention 2: placebo
Intervention descriptions: intervention 1: MG01CI (Metadoxine Immediate-release/Slow-release, Bilayer Caplet) 1400 mg administered orally once daily intervention 2: Placebo 1400 mg administered orally once daily

Protocol document: