CClinicalTrials.gg
CompletedNCT05540405Updated May 31, 2023

Effects of Bitter Melon on Cardiometabolic Health

An interventional study of Low-dose bitter melon and High-dose bitter melon in PreDiabetes, sponsored by Midwest Center for Metabolic and Cardiovascular Research. Completed at 3 sites in United States. Open to participants aged 18 Years to 74 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-05-31.

Sponsored by Midwest Center for Metabolic and Cardiovascular Research · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
75
Allocation
Randomized
Ages
18 Years to 74 Years
Sex
All
01

Study summary

The objectives of this study are to assess the effects of a bitter melon product at two doses, compared to control, on indicators of cardiometabolic health among men and women with prediabetes.

02

Conditions studied

03

In context

Prediabetic State

999 studies on the registry are indexed under Prediabetic State; 238 are open to participants now.

This study's enrollment of 75 is above the median of 65 across 844 interventional studies indexed under Prediabetic State.

Browse Prediabetic State studies →

Lead sponsor

Midwest Center for Metabolic and Cardiovascular Research is the lead sponsor of 28 studies on the registry; 3 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 74 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  1. Male or female 18 to 74 years of age, inclusive.
  2. Subject has BMI 25.00 to 39.99 kg/m2, inclusive.
  3. Subject has prediabetes defined as fasting capillary glucose 100 to 125 mg/dL, inclusive, and/or HbA1c 5.7% to 6.4%, inclusive, at screening.
  4. Subject is judged by the Investigator to be in generally good health on the basis of medical history and screening measurements.
  5. Subject is willing to abstain from consumption of bitter melon (other than the study products) throughout the study.
  6. Subject is willing and able to undergo the scheduled study procedures.
  7. Subject understands the study procedures and signs forms documenting informed consent to participate in the study and authorization for release of relevant protected health information to the study Investigator.

Exclusion criteria

Exclusion Criteria:

  1. Subject has consumed a bitter melon food or product within 8 weeks prior to the screening visit (week -1) (washout permitted).
  2. Subject has a laboratory test result of clinical significance based on the judgment of the Principal Investigator or qualified designee.
  3. Subject has a clinically significant medical condition that, in the opinion of the Investigator, could interfere with the interpretation of the study results.
  4. Subject has uncontrolled hypertension (systolic blood pressure ≥160 mm Hg and/or diastolic blood pressure ≥100 mm Hg) at screening.
  5. Subject has a history of cancer in the prior 5 years, except non-melanoma skin cancer or carcinoma in situ of the cervix.
  6. Subject has had a weight change of +/-4.5 kg (10 lbs) in the previous 3 months.
  7. Subject has extreme dietary habits (e.g., Atkins, vegan, very low carbohydrate diet).
  8. Subject has a history of bariatric surgery, is currently taking a weight loss drug, or is actively attempting to lose or gain body weight.
  9. Subject has taken a proprotein convertase subtilisin kexin type 9 (PCSK9) inhibitor agent within 12 weeks prior to screening.
  10. Subject has unstable use (defined as initiation or change in dose) of the following lipid-altering medications within 4 weeks prior to screening: bile acid sequestrants, fibrates, niacin (drug form), statins, ezetimibe, bempedoic acid, or omega-3-ethyl ester drugs.
  11. Subject has taken any hypoglycemic medications within 4 weeks prior to screening including: insulin, sodium-glucose cotransporter-2 (SGLT2)-inhibitors, alpha-glucosidase inhibitors, biguanides, thiazolidinediones, dipeptidyl peptidase-4 (DPP-4) inhibitors, meglitinides, sulfonylureas, glucagon-like peptide-1 (GLP-1) receptor agonists, GLP-1/glucose-dependent insulinotropic polypeptide (GIP) modulators.
  12. Subject has unstable use (defined as initiation or change in dose) of anti-hypertensive medications within 4 weeks prior to screening.
  13. Subject has used systemic corticosteroids within 4 weeks prior to screening.
  14. Subject has taken dietary supplements meant to regulate carbohydrate or lipid metabolism or body weight, within 4 weeks of screening, including, but not limited to, chromium picolinate, ginseng, starch blockers, omega-3 fatty acid supplements (e.g., flaxseed, fish or algal oils), red rice yeast supplements, garlic supplements, soy isoflavone supplements, niacin or its analogues at doses >400 mg/day, plant sterol or stanols, and/or irregular or inconsistent use of Metamucil® or other viscous fiber-containing supplements (consistent, daily use up to 1 teaspoon of a viscous-fiber supplement is acceptable).
  15. Subject has signs or symptoms of an active infection of clinical significance or has taken antibiotics within 5 days prior to any visit (washout is permitted for re-scheduling of the clinic visit).
  16. Subject has an allergy, sensitivity or intolerance to any components of the study products.
  17. Subject is a female who is pregnant, planning to be pregnant during the study period, lactating, or is of childbearing potential and is unwilling to commit to the use of a medically approved form of contraception throughout the study period.
  18. Subject has been exposed to any non-registered drug product within 30 days prior to screening.
  19. Subject has a current or recent history (within 12 months prior to screening) or strong potential for illicit drug or excessive alcohol intake defined as >14 drinks per week (1 drink = 12 oz beer, 5 oz wine, or 1.5 oz hard liquor).
  20. Subject has a condition the Investigator believes would interfere with his or her ability to provide informed consent, comply with the study protocol, which might confound the interpretation of the study results or put the person at undue risk.
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
75 participants (actual)

Study arms

  • Experimental
    Low-dose bitter melon

    Subject will receive 1 Insumate bitter melon capsule/d (300 mg) and 1 placebo capsule/d (300 mg)

    Dietary Supplement: Low-dose bitter melon

  • Experimental
    High-dose bitter melon

    Subject will receive 2 Insumate bitter melon capsules/d (300 mg each)

    Dietary Supplement: High-dose bitter melon

  • Placebo comparator
    Placebo

    Subject will receive 2 placebo capsules/d (300 mg each)

    Dietary Supplement: Placebo

Interventions

  • Dietary supplementLow-dose bitter melon

    Subject will receive 1 Insumate bitter melon capsule/d (300 mg) and 1 placebo capsule/d (300 mg)

  • Dietary supplementHigh-dose bitter melon

    Subject will receive 2 Insumate bitter melon capsules/d (300 mg each)

  • Dietary supplementPlacebo

    Subject will receive 2 placebo capsules/d (300 mg each)

06

What researchers measure

Primary outcomes

  1. Glycated hemoglobin (HbA1c)

    Change in HbA1c

    Time frame: Baseline to 12 weeks

Secondary outcomes

  1. Glycated hemoglobin (HbA1c)

    Change in HbA1c

    Time frame: Baseline to 6 weeks

  2. Fasting glucose

    Change in fasting glucose

    Time frame: Baseline up to 12 weeks

  3. Fasting insulin

    Change in fasting insulin

    Time frame: Baseline up to 12 weeks

  4. Homeostasis model assessment of insulin sensitivity (HOMA%S)

    Change in HOMA%S

    Time frame: Baseline up to 12 weeks

  5. Homeostasis model assessment of beta-cell function (HOMA%B)

    Change in HOMA%B

    Time frame: Baseline up to 12 weeks

  6. Total cholesterol

    Change in total cholesterol

    Time frame: Baseline up to 12 weeks

  7. Low-density lipoprotein cholesterol (LDL-C)

    Change in LDL-C

    Time frame: Baseline up to 12 weeks

  8. High-density lipoprotein cholesterol (HDL-C)

    Change in HDL-C

    Time frame: Baseline up to 12 weeks

  9. Non-HDL-C

    Change in non-HDL-C

    Time frame: Baseline up to 12 weeks

  10. Fasting triglycerides

    Change in triglycerides

    Time frame: Baseline up to 12 weeks

  11. Body fat

    Change in body fat

    Time frame: Baseline up to 12 weeks

  12. Skeletal muscle mass

    Change in skeletal muscle mass

    Time frame: Baseline up to 12 weeks

07

Study locations

3 sites
  • Excellence Medical & Research
    Miami Gardens, Florida 33169, United States
  • Health Awareness
    Port Saint Lucie, Florida 34952, United States
  • Biofortis, Inc.
    Addison, Illinois 60101, 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 May 31, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05540405
Lead sponsor
Midwest Center for Metabolic and Cardiovascular Research
Collaborators
Greenyn Biotechnology
Responsible party
Sponsor
First posted
Sep 14, 2022
Start date
Jan 24, 2023
Primary completion
May 24, 2023
Completion
May 24, 2023
Last update
May 31, 2023

Study contacts

Kevin C Maki, PhD
study director · MB Clinical Research & Consulting

Oversight

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

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