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Effect of supplement containing N-acetyl glucosamine, proteoglycan and lutein, on knee joint symptoms. - a randomized, double blind, placebo-controlled study -

Effect of supplement containing N-acetyl glucosamine, proteoglycan and lutein, on knee joint symptoms. - a randomized, double blind, placebo-controlled study - - Effect of supplement containing N-acetyl glucosamine, proteoglycan and lutein, on knee joint symptoms.

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000020503
Enrollment
80
Registered
2016-07-01
Start date
2016-01-09
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 volunteer

Interventions

Ingestion of supplement containing N-acetyl glucosamine, proteoglycan complex and lutein for 12 weeks Ingestion of placebo without N-acetyl glucosamine, proteoglycan complex and lutein for 12 weeks

Sponsors

Soiken Inc.
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Subject, aged from 30 to 65 years Males and females with uncomfortable feeling of knee 2) Subject, be diagnosed KLgrade 0 or 1 3) Subject, upon briefing of the content of the present study, fully understanding and agreeing to its objective; and being able to personally sign a written informed consent

Exclusion criteria

Exclusion criteria: 1)Subjects having a medical history of rheumatism 2)Subjects who have leg pain or numbness 3)Subjects who have injury of semi-lunar disc or the other knee joint disease 4)Subjects receiving treatment for osteoarthritis 5)Subject receiving treatment for serious liver, renal, cardio-vascular, respiratory, endocrine, or metabolic disorders 6)Subject presenting known allergy or history of hypersensitivity to gelatin, crab and salmon 7)For female subject: pregnancy or breast feeding, or possibility of pregnancy, or intention to be pregnant during the study 8)Subject having blood sample of 200 ml or more taken (e.g., donated blood) within 1 month, or 400 ml or more within 3 months prior to the start of the present study 9)Subject who took part in another clinical trial within 3 months prior to the start of the present study or who is currently taking part in another clinical trial 10)Subject deemed unsuitable by the investigator

Design outcomes

Primary

MeasureTime frame
JKOM and Knee Society Score(ver 2011)

Secondary

MeasureTime frame
knee joint subjective symptoms(VAS)

Countries

Japan

Contacts

Public ContactTomohiro Sugino

Soiken Inc. President & CEO

sugino@soiken.com06-6871-8888

Outcome results

None listed

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