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A single-blind placebo-controlled cross-over study of Yoku-kan-san for sedative effects in healthy Japanese male subjects : objective evaluations of sedative effects by analysis of saccadic eye movement.

A single-blind placebo-controlled cross-over study of Yoku-kan-san for sedative effects in healthy Japanese male subjects : objective evaluations of sedative effects by analysis of saccadic eye movement. - Objective evaluation of sedative effects of Yoku-kan-san.

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCTs031220185
Enrollment
6
Registered
2022-07-06
Start date
2022-07-06
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

none Healthy volunteer

Interventions

The following three drugs will be administered to six healthy volunteers in a randomized single-blind cross-over design. 1. Yoku-kan-san (Tsumura) 2.5 g 2. Etizolam 1 mg + lactose 2.4 g 3. Lactose 2.5
D016037, D018592, D011897
single-blind, crossover design, random allocation

Sponsors

Uchida Naoki
Lead Sponsor

Eligibility

Sex/Gender
Male

Inclusion criteria

Inclusion criteria: 1) Age: between 20 and 40 years old at the time of obtaining consent. 2) Gender: male 3) BMI (Body Mass Index: kg/m2) is between 18.5 and 25.0 (rounded to the first decimal place). 4) Those who have the capacity to give consent, comply with the rules and regulations during participation in the study, undergo the preliminary examination specified in the study protocol, and report subjective symptoms. 5) Those who are judged to be healthy and eligible to participate in this study by the physician in charge of the research at the preliminary examination specified in the study protocol.

Exclusion criteria

Exclusion criteria: 1) Those with a history of drug abuse/dependence, alcohol abuse/dependence, cardiac, hepatic, renal, pulmonary, occular, or hematologic disease that may affect the evaluation or safety of this study. 2) Those with sleep disturbace with a score of 6 or more evaluated by the Japanese version of Pittsburgh Sleep Quality Index. 3) Those with excessive daytime sleepiness with a score of 11 or more evaluated by the Japanese version of Epworth Sleepiness Scale. 4) Those who had worked or will work a night shift between 2200 and 0700 from a week before the first term until the end of the third term. 5) Those who are taking medications including dietary supplements that may affect the evaluation and safety of this study. 6) Those who have a history of drug allergy. 7) Those who have an allergy to gelatin. 8) Those who have participated in another clinical trial within the last 3 months. 9) Those who are judged by the investigator to be ineligible for the study.

Design outcomes

Primary

MeasureTime frame
Saccadic eye movement peak velosity

Secondary

MeasureTime frame
1. Saccadic eye movement reaction time and inaccuracy 2. Plasma orexin concentration 3. Subjective drowsiness evaluated by Visual Analog Scales

Contacts

Public ContactJun Miura

Showa University Clinical Research Institute for Clinical Pharmacology and Therapeuticsical

junmiura0815@med.showa-u.ac.jp+81-3-3300-5247

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026