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CompletedNCT05347602Updated Jul 12, 2022

Gold Factor on Knee Joint Health and Function

An interventional study of Gold Factor (Gold Nanoparticles, AuNPs) and Placebo in Knee Arthritis, Knee Osteoarthritis and Knee Pain Chronic, sponsored by 4Life Research, LLC. Completed at 1 site in United States. Open to participants aged 18 Years to 87 Years. Per ClinicalTrials.gov, last updated 2022-07-12.

Sponsored by 4Life Research, LLC · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 1 year 8 months after the study started (first participant enrolled Aug 2020, registered Apr 2022).
Phase
Not applicable
Study type
Interventional
Enrollment
51
Allocation
Randomized
Ages
18 Years to 87 Years
Sex
All
01

Study summary

The purpose of this clinical study was to determine whether gold nanoparticles (AuNP) supplement holds clinical value in improving joint health, function, and quality of life for arthritis patients.

Read the detailed description

The purpose of this clinical study was to determine whether gold nanoparticles (AuNP) supplement holds clinical value in improving knee joint health, function, and quality of life for arthritis patients. A total of 51 participants were followed for 20 weeks through a three phase longitudinal study. Both subjective and objective parameters were used to measure and monitor changes in knee joint health and function, as well as quality of life.

02

Conditions studied

  • Knee Arthritis
  • Knee Osteoarthritis
  • Knee Pain Chronic
  • Knee Discomfort
  • Rheumatoid Arthritis
  • Knee Pain Swelling

Keywords

  • Knee joint health
  • Arthritis
  • Gold nanoparticles (AuNPs)
  • Knee joint function
  • Osteoarthritis
  • Rheumatoid Arthritis
03

In context

Osteoarthritis, Knee

3,391 studies on the registry are indexed under Osteoarthritis, Knee; 628 are open to participants now.

This study's enrollment of 51 is below the median of 69 across 2,808 interventional studies indexed under Osteoarthritis, Knee.

Browse Osteoarthritis, Knee studies →

Lead sponsor

4Life Research, LLC is the lead sponsor of 7 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 87 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • ≥ 18 and \<87 years of age
  • Having arthritis
  • Suffering from chronic knee pain
  • Failed treatments to date - including surgery, Physical Therapy, NSAIDs
  • Must agree to maintain the same eating, exercise, and sleep arrangements for the whole duration of the study

Exclusion criteria

Exclusion Criteria:

  • Having bacterial, intra-articular, or knee infections
  • Had any knee related partial or complete total knee replacement within 3 months prior to the start of the study
  • Had recent (3 months prior to start of the study) knee injection
  • Currently on NSAIDs
  • currently pregnant or lactating
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Sequential assignment
Masking
Double (Participant, Investigator)
Enrollment
51 participants (actual)

Study arms

  • Other
    Phase 1: double-blinded placebo-controlled Supplement vs Placebo

    Phase 1 (8 weeks): Supplement and Placebo groups ingested 3 oz of Supplement and Placebo per day respectively for the first four weeks as a loading dose, and then switched to 2 oz per day for weeks 5 - 8. This phase was double-blinded.

    Dietary Supplement: Gold Factor (Gold Nanoparticles, AuNPs) · Dietary Supplement: Placebo

  • No intervention
    Washout Phase

    Phase 2 (4 weeks): Both groups underwent a month-long "wash out" period, during which they did not ingest any of the Supplement or Placebo. This lasted from weeks 9-12. This phase was not double-blinded as all participants and the researchers were aware of the wash-out procedure.

  • Active comparator
    Phase 3: Supplement

    Phase 3 (8 weeks): Both groups took the Supplement at 3 oz per day as a loading dose for four weeks (weeks 13 - 16), and then 2 oz per day for the final four weeks (weeks 17 - 20). This phase was open labeled, as all participants and the researchers were aware that all participants were ingesting the Supplement.

    Dietary Supplement: Gold Factor (Gold Nanoparticles, AuNPs)

Interventions

  • Dietary supplementGold Factor (Gold Nanoparticles, AuNPs)

    AuNP used in the study is an aqueous suspension of clean-surfaced, faceted gold nanoparticles that have extraordinary catalytic capabilities. AuNP were 8 - 28 nm in diameter, with varying shapes from bipyramids to polyhedrons. To avoid contamination, AuNP was suspended in ultra-pure water, and were not coated with any proteins or molecules to avoid negative reactions within living tissues. This resulted in a rose-pink color due to the incident light inducing a specific resonance known as the localized surface plasmon resonance. The AuNP supplement used in this study contains elemental gold at 6 ppm. Study dosage is 1 oz per day, which is about 0.17 mg elemental gold per day.

    Also known as: AuNP Supplement

  • Dietary supplementPlacebo

    For the Placebo, water and red dye were mixed to create a placebo liquid with the same rose-pink shade as the AuNP supplement, along with flavoring that matched the AuNP supplement.

06

What researchers measure

Primary outcomes

  1. Knee injury and Osteoarthritis Outcome Score (KOOS): Pain score

    The KOOS survey was chosen due to its repeatability, and it gave scores of 0-100 for four separate categories: Symptoms, Pain, Function \& Daily Living, Sports \& Recreational Activities, and Quality of Life. Under KOOS scoring guidelines, a score of zero represents extreme knee problems, and 100 represents complete function of the knee with no pain, discomfort, or other joint related problems.

    Time frame: 20 weeks

  2. Knee injury and Osteoarthritis Outcome Score (KOOS): Symptoms score

    The KOOS survey was chosen due to its repeatability, and it gave scores of 0-100 for four separate categories: Symptoms, Pain, Function \& Daily Living, Sports \& Recreational Activities, and Quality of Life. Under KOOS scoring guidelines, a score of zero represents extreme knee problems, and 100 represents complete function of the knee with no pain, discomfort, or other joint related problems.

    Time frame: 20 weeks

  3. Knee injury and Osteoarthritis Outcome Score (KOOS): Function in Activities of Daily Living (ADL) score

    The KOOS survey was chosen due to its repeatability, and it gave scores of 0-100 for four separate categories: Symptoms, Pain, Function \& Daily Living, Sports \& Recreational Activities, and Quality of Life. Under KOOS scoring guidelines, a score of zero represents extreme knee problems, and 100 represents complete function of the knee with no pain, discomfort, or other joint related problems.

    Time frame: 20 weeks

  4. Knee injury and Osteoarthritis Outcome Score (KOOS): Function in Sports and Recreation score

    The KOOS survey was chosen due to its repeatability, and it gave scores of 0-100 for four separate categories: Symptoms, Pain, Function \& Daily Living, Sports \& Recreational Activities, and Quality of Life. Under KOOS scoring guidelines, a score of zero represents extreme knee problems, and 100 represents complete function of the knee with no pain, discomfort, or other joint related problems.

    Time frame: 20 weeks

  5. Knee injury and Osteoarthritis Outcome Score (KOOS): Quality of Life score

    The KOOS survey was chosen due to its repeatability, and it gave scores of 0-100 for four separate categories: Symptoms, Pain, Function \& Daily Living, Sports \& Recreational Activities, and Quality of Life. Under KOOS scoring guidelines, a score of zero represents extreme knee problems, and 100 represents complete function of the knee with no pain, discomfort, or other joint related problems.

    Time frame: 20 weeks

  6. C-Reactive Protein

    C-Reactive Protein levels were measured at T0 for baseline scores, and then measured again at T1, T2, and T3. As CRP levels are biomarkers of systemic inflammation, it was expected to see a decrease in CRP levels when taking AuNP Supplement.

    Time frame: 20 weeks

  7. Range of Motion Bilateral Flexion score

    All participants completed a physical assessment conducted by an assigned physical therapist: Range of Motion Bilateral Flexion, Leg Press, Walk Test, Sit-to Stand and Single Leg Squats.

    Time frame: 20 weeks

  8. Leg Press repetition number

    All participants completed a physical assessment conducted by an assigned physical therapist: Range of Motion Bilateral Flexion, Leg Press, Walk Test, Sit-to Stand and Single Leg Squats.

    Time frame: 20 weeks

  9. 6-minute Walk distance (meter)

    All participants completed a physical assessment conducted by an assigned physical therapist: Range of Motion Bilateral Flexion, Leg Press, Walk Test, Sit-to Stand and Single Leg Squats.

    Time frame: 20 weeks

  10. Sit-to Stand repetition number

    All participants completed a physical assessment conducted by an assigned physical therapist: Range of Motion Bilateral Flexion, Leg Press, Walk Test, Sit-to Stand and Single Leg Squats.

    Time frame: 20 weeks

  11. Single Leg Squats repetition number

    All participants completed a physical assessment conducted by an assigned physical therapist: Range of Motion Bilateral Flexion, Leg Press, Walk Test, Sit-to Stand and Single Leg Squats.

    Time frame: 20 weeks

Secondary outcomes

  1. Number of Event for Loss of Balance (LOB)

    DorsaVi Assessments: Loss of Balance (LOB), Movement efficiency index, Squat Lumbar Flexion Deviation, Squat Lateral Shift Deviations, single leg squat scores, speed, and tibial inclination

    Time frame: 20 weeks

  2. Movement efficiency index

    DorsaVi Assessments: Loss of Balance (LOB), Movement efficiency index, Squat Lumbar Flexion Deviation, Squat Lateral Shift Deviations, single leg squat scores, speed, and tibial inclination

    Time frame: 20 weeks

  3. Squat Lumbar Flexion Deviation score

    DorsaVi Assessments: Loss of Balance (LOB), Movement efficiency index, Squat Lumbar Flexion Deviation, Squat Lateral Shift Deviations, single leg squat scores, speed, and tibial inclination

    Time frame: 20 weeks

  4. Squat Lateral Shift Deviation score

    DorsaVi Assessments: Loss of Balance (LOB), Movement efficiency index, Squat Lumbar Flexion Deviation, Squat Lateral Shift Deviations, single leg squat scores, speed, and tibial inclination

    Time frame: 20 weeks

  5. single leg squat speed

    DorsaVi Assessments: Loss of Balance (LOB), Movement efficiency index, Squat Lumbar Flexion Deviation, Squat Lateral Shift Deviations, single leg squat scores, speed, and tibial inclination

    Time frame: 20 weeks

  6. single leg squat tibial inclination

    DorsaVi Assessments: Loss of Balance (LOB), Movement efficiency index, Squat Lumbar Flexion Deviation, Squat Lateral Shift Deviations, single leg squat scores, speed, and tibial inclination

    Time frame: 20 weeks

  7. Percentage of participants that would continue taking the product after the study ended.

    Acceptability of AuNP Supplement was analyzed at the end of the study. Participants were asked if they would continue taking the product after the study in their final exit survey.

    Time frame: 20 weeks

07

Study locations

1 site
  • Professional Athletic Orthopedics
    St Louis, Missouri 63122, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 12, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05347602
Lead sponsor
4Life Research, LLC
Collaborators
Professional Athletic Orthopedics, St. Louis University
Responsible party
Sponsor
First posted
Apr 26, 2022
Start date
Aug 3, 2020
Primary completion
Dec 30, 2020
Completion
Dec 30, 2020
Last update
Jul 12, 2022

Study contacts

Richard C Lehman, MD
principal investigator · Professional Athletic Orthopedics

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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