# Observational Study to Assess the Frequency of Lidocaine Ineffectiveness in Hard-to-treat ADHD

> **NCT04167189** · EARLY_PHASE1 · COMPLETED · sponsor: **PhenoSolve, LLC** · enrollment: 28 (actual)

## Conditions studied

- ADHD

## Interventions

- **DRUG:** Lidocaine gel

## Key facts

- **NCT ID:** NCT04167189
- **Lead sponsor:** PhenoSolve, LLC
- **Sponsor class:** INDUSTRY
- **Phase:** EARLY_PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2018-01-20
- **Primary completion:** 2020-03-30
- **Final completion:** 2020-03-30
- **Target enrollment:** 28 (ACTUAL)
- **Last updated:** 2021-07-02

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04167189

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04167189, "Observational Study to Assess the Frequency of Lidocaine Ineffectiveness in Hard-to-treat ADHD". Retrieved via AI Analytics 2026-06-01 from https://api.ai-analytics.org/clinical/NCT04167189. Licensed CC0.

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