Effects of 5-aminolevulinic acid supplementation on stress in healthy workers

Effects of 5-aminolevulinic acid supplementation on stress in healthy workers - Effects of 5-aminolevulinic acid supplementation on stress in healthy workers

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000038821

Enrollment

Registered

2019-12-07

Start date

2019-12-08

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 workers

Interventions

5-aminolevulinic acid intake washout period Placebo intake placebo intake washout period 5-aminolevulinic acid intake

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1.25-70age 2.Continuous worker over 6-monthes (over 30-hours per week) 3.Subjects with no physical disease and no psychiatric disorder 4.Subjects with no exercise habit 5.Subjects who want to participated in the study voluntarily and who agreed to participate.

Exclusion criteria

Exclusion criteria: 1.History of psychiatric disorders 2.Above 16 CES-D score(Center for Epidemiologic Studies Depression Scale) 3.Subjects who are pregnant,breastfeeding 4.Subjects with photosensitivity(porphyria) 5.Subjects who are taking foods containing St.John's Wort 6.Subjects participated in other clinical trials within 3-monthes, or planning to participate in others during this study 7.Subjects judged by the investigator as inappropriate

Design outcomes

Primary

Measure	Time frame
stress VAS(visual analog scale)	—

Countries

Japan

Contacts

Public ContactHiroshi Suzuki

Aoba-Promotion Co.,Ltd. investigator

aoba@jtrc-tokyo.com03-5976-0556

Outcome results

None listed

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