# A Comparative Effectiveness Study Evaluating OROS Methylphenidate HCl, Ritalin (Methylphenidate HCl), and Placebo for the Treatment of Attention Deficit Hyperactivity Disorder in Children

> **NCT00269789** · PHASE3 · COMPLETED · sponsor: **Alza Corporation, DE, USA**

## Conditions studied

- Attention Deficit Hyperactivity Disorder

## Interventions

- **DRUG:** Ritalin
- **DRUG:** OROS Methylphenidate HCl
- **DRUG:** Placebo

## Key facts

- **NCT ID:** NCT00269789
- **Lead sponsor:** Alza Corporation, DE, USA
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 1998-03
- **Primary completion:** —
- **Final completion:** 1998-05
- **Target enrollment:** — (—)
- **Last updated:** 2011-06-10


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00269789

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00269789, "A Comparative Effectiveness Study Evaluating OROS Methylphenidate HCl, Ritalin (Methylphenidate HCl), and Placebo for the Treatment of Attention Deficit Hyperactivity Disorder in Children". Retrieved via AI Analytics 2026-09-25 from https://api.ai-analytics.org/clinical/NCT00269789. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*