Evaluation of the effect of ginger extract powder on blood flow rate in healthy subjects

Evaluation of the effect of ginger extract powder on blood flow rate in healthy subjects - Evaluation of the effect of ginger extract powder on blood flow rate in healthy subjects

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000044983

Enrollment

100

Registered

2021-07-28

Start date

2021-07-28

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

Healthy

Interventions

Subjects take 1 capsule per day containing 100 mg of ginger extract powder for 8 weeks. Subjects take 1 placebo capsule per day for 8 weeks.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Healthy 2) Feeling visual fatigue and shoulder stiffness

Exclusion criteria

Exclusion criteria: 1) Ocular disorder requiring prompt treatment 2) Taking medicines or functional food that may affect the trial 3) Participation in any clinical trial within 90 days of the commencement of the trial 4) In pregnancy or nursing a child 5) Judged as ineligible by the investigators

Design outcomes

Primary

Measure	Time frame
8-week change in retinal blood flow	—

Secondary

Measure	Time frame
>8-week changes in the followings: muscle hardness in shoulder, peripheral blood flow rate, visual analogue scales (VAS) for visual fatigue, VAS for shoulder stiffness, VAS for warmth of a body, dioptometry, radius of curvature of the cornea, central corneal thickness, visual acuity, intraocular pressure, and a fundus photo >The relationship among retinal blood flow, intraocular pressure, and eye stiffness	—

Measure

Time frame

>8-week changes in the followings: muscle hardness in shoulder, peripheral blood flow rate, visual analogue scales (VAS) for visual fatigue, VAS for shoulder stiffness, VAS for warmth of a body, dioptometry, radius of curvature of the cornea, central corneal thickness, visual acuity, intraocular pressure, and a fundus photo >The relationship among retinal blood flow, intraocular pressure, and eye stiffness

—

Countries

Japan

Contacts

Public ContactFumiko Higashikawa

Graduate School of Biomedical and Health Sciences, Hiroshima University Department of Probiotic Science for Preventive Medicine

fumiko@hiroshima-u.ac.jp0822571533

Outcome results

None listed

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