ClinicalTrials.gg
Not yet recruitingNCT04918667Updated Sep 14, 2023

Effect of Gamma-cyclodextrin on the Bioavailability of Berberine

A Phase 1 interventional study of Berberine incorporated in gamma cyclodextrin and Berberine in Drug Absorption, sponsored by EuroPharma, Inc.. Not yet recruiting at 4 sites in 2 countries. Open to participants aged 18 Years to 60 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-09-14.

Sponsored by EuroPharma, Inc. · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Nov 2025, 1 year ago, but the record still lists the study as not yet recruiting.
Phase
Phase 1
Study type
Interventional
Enrollment
16
Allocation
Randomized
Ages
18 Years to 60 Years
Sex
All
01

Study summary

In this study, we will evaluate the relative bioavailability of Berberine (BB) from capsules containing Indian Barberry (Berberis aristate DC.) Bark and Root Extract in the blood plasma of healthy subjects after oral administration of:

A. Capsules containing Berberine and GCD (BBA Berberine MetX™ Ultra Absorption, 250 mg) B. Capsules containing Berberine (BB, Berberine MetX™, 500 mg) - (reference product).

Read the detailed description

Study Background

A growing body of evidence suggests that gamma-cyclodextrin (GCD) can increase the clinical efficacy of water-insoluble biologically active compounds with low bioavailability. GCD is the most bio adaptable and helpful to increase the absorption of many drugs, including Berberine from Indian Barberry (Berberis aristate DC.) Bark and Root Extract by forming inclusion complexes or GCD/drug conjugates.

Berberine has been recommended in traditional practice and recognized by modern science to support healthy blood sugar†, cholesterol and triglyceride levels, and overall metabolic health. But despite these findings, standard Berberine can still be difficult for the body to absorb and use effectively.

It's estimated that only about five percent of any given dosage of Berberine makes it into the bloodstream, so finding a way to enhance absorption is key to the full advantage of its benefits.

Hypothesis: gamma-cyclodextrin increases absorption and bioavailability of Berberine from Berberine MetX™ Ultra Absorption capsules.

The study aims to provide experimental evidence supporting or rejecting this hypothesis.

This will be a double-blind, crossover design, pharmacokinetic study, where 16 healthy human volunteers will be randomly assigned to receive two different formulations BBA, and BB, in two consecutive phases of the study:

  • Phase A. All patients take capsules BBA., provide blood samples in 0.5, 0.75, 1, 2, 4, 6, 12, 24, and 48 hours (9 points) after administration following washout period for two weeks.
  • Phase B. All patients take capsules BB, provide blood samples in 0.5, 0.75, 1, 2, 4, 6, 12, 24, and 48 hours (9 points) after administration following washout period for two weeks.

Subjects will be in the clinic from not less than 11 hours pre-dose to ensure at least 10 hours fasting before administering the investigational product. They will remain in the facility post-dose until at least 24 hours each period, provided they are not suffering from any adverse event.

The concentration of Berberine in all blood samples will be determined using a validated for a limit of detection, accuracy, and precision analytical method (HPLC-MS) with the internal standard - digoxin. Appropriate mathematical methods and Kinetic 4.4.1 software will be used to generate basic pharmacokinetic parameters.

02

Conditions studied

  • Drug Absorption

Keywords

  • Berberine
  • gamma-cyclodextrin
  • Pharmacokinetic
  • Bioavailability
  • Berberine MetX™ Ultra Absorption
03

In context

Lead sponsor

EuroPharma, Inc. is the lead sponsor of 8 studies on the registry; 1 is open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

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

  • Healthy volunteers, as determined by medical history, physical examination, and clinical laboratory testing,
  • Willingness to stay in the unit overnight for the duration of the study,
  • Provide a signed written .

Exclusion criteria

Exclusion Criteria:

  • overweight ( >35 kg/m2),
  • pregnancy,
  • lactation,
  • drug abuse,
  • use of dietary supplements or any form of medication (with the exception of oral ),
  • heavy smokers, or ex-smokers with a remote history (> one pack/day),
  • frequent alcohol consumption (>20 g ethanol/d),
  • adherence to a restrictive dietary regimen,
  • physical activity of more than 5 h/wk,
  • respiratory tract infections, or suspicion thereof in the last 14 days before dosing,
  • history or presence of disease in the kidneys and heart, lungs, liver, gastrointestinal tract, endocrine organs or other conditions such as metabolic disease known to interfere with the absorption, distribution, metabolism, and excretion of drugs,
  • ,
  • disorders such as (but not limited to) lupus erythematosus, multiple sclerosis, rheumatoid arthritis, or sarcoidosis,
  • any other disease or condition, which, in the opinion of the Investigator, would make the subject unsuitable for this study,
  • currently taking medications known to be CYP2C9 inducers (i.e., carbamazepine and rifampicin).
Terms in these criteria, in plain language(5)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
16 participants (estimated)

Study arms

  • Experimental
    Berberine MetX™ Ultra Absorption

    16 healthy subjects will receive orally 500 mg of berberine in two capsules of Berberine MetX™ Ultra Absorption.

    Combination Product: Berberine incorporated in gamma cyclodextrin

  • Active comparator
    Berberine MetX™

    16 healthy subjects will receive orally 500 mg of berberine in one capsule of Berberine MetX™ (reference product).

    Dietary Supplement: Berberine

Interventions

  • Combination productBerberine incorporated in gamma cyclodextrin

    Experimental modified product. One capsule contains 250 mg of Berberine from Indian Barberry (Berberis aristate DC.) Bark and Root Extract incorporated in gamma-cyclodextrin

    Also known as: Berberine MetX™ Ultra Absorption, 250 mg

  • Dietary supplementBerberine

    Active comparator. One capsule contains 500 mg of Berberine from Indian Barberry (Berberis aristate DC.) Bark and Root Extract

    Also known as: Berberine MetX™, 500 mg

06

What researchers measure

Primary outcomes

  1. The area under the plasma concentration versus time curve (AUC, expressed in ng x h/mL) of berberine incorporated in gamma-cyclodextrin

    The changes from the baseline the concentration (ng/ml) of berberine in blood plasma obtained after oral administration of the experimental product BBA.

    Time frame: 0.5, 0.75, 1, 2, 4, 6, 12, 24, 48, 72 and 96 hours, post-dose

  2. The area under the plasma concentration versus time curve (AUC, expressed in ng x h/mL) of berberine

    The changes from the baseline the concentration (ng/ml) of berberine in blood plasma obtained after oral administration of the active comparator BB.

    Time frame: 0.5, 0.75, 1, 2, 4, 6, 12, 24, 48, 72 and 96 hours, post-dose

Secondary outcomes

  1. The absorption rate constants (Ka, h-1) of berberine incorporated in gamma-cyclodextrin

    The absorption rate constants (Ka, h-1) of berberine obtained after oral administration of the experimental modified product BBA.

    Time frame: 0.5, 0.75, 1, 2, 4, 6, 12, 24, 48, 72 and 96 hours, post-dose

  2. The absorption rate constants (Ka, h-1) of berberine

    The absorption rate constants (Ka, h-1) of berberine obtained after oral administration of the active comparator BB.

    Time frame: 0.5, 0.75, 1, 2, 4, 6, 12, 24, 48, 72 and 96 hours, post-dose

  3. Maximum plasma concentration (Cmax, ng/ml) of Berberine incorporated in gamma-cyclodextrin

    Maximum plasma concentration (Cmax, ng/ml), of berberine obtained after oral administration of the experimental modified product BBA

    Time frame: 0.5, 0.75, 1, 2, 4, 6, 12, 24, 48, 72, and 96 hours, post-dose

  4. Maximum plasma concentration (Cmax, ng/ml) of Berberine

    Maximum plasma concentration (Cmax, ng/ml), of berberine - obtained after oral administration of the active comparator BB.

    Time frame: 0.5, 0.75, 1, 2, 4, 6, 12, 24, 48, 72, and 96 hours, post-dose

  5. Time to reach maximum plasma concentration, Tmax (h) of berberine incorporated in gamma-cyclodextrin

    Time to reach maximum plasma concentration, Tmax (h) of berberine obtained after oral administration of the experimental modified product BBA

    Time frame: 0.5, 0.75, 1, 2, 4, 6, 12, 24, 48, 72, and 96 hours, post-dose

  6. Time to reach maximum plasma concentration, Tmax (h) of berberine

    Time to reach maximum plasma concentration, Tmax (h) of berberine obtained after oral administration of the active comparator BB.

    Time frame: 0.5, 0.75, 1, 2, 4, 6, 12, 24, 48, 72, and 96 hours, post-dose

  7. Mean absorption time MAT (h) of berberine incorporated in gamma-cyclodextrin

    Mean absorption time MAT (h) of berberine obtained after oral administration of the experimental modified product BBA

    Time frame: 0.5, 0.75, 1, 2, 4, 6, 12, 24, 48, 72, and 96 hours, post-dose

  8. Mean absorption time MAT (h) of berberine

    Mean absorption time MAT (h) of berberine obtained after oral administration of the active comparator BB

    Time frame: 0.5, 0.75, 1, 2, 4, 6, 12, 24, 48, 72, and 96 hours, post-dose

Other outcomes

  1. Relative bioavailability (%) of berberine incorporated in gamma-cyclodextrin

    Relative bioavailability (%) of Berberine from 0 to 96 hours defined as the ratio of AUC0-96h for the tested formulation (Berberine MetX™ Ultra Absorption capsules) to the AUC0-96h obtained for the reference product (100%, Berberine MetX™ Ultra capsules), given by the same route of administration in the same dose. F= AUCBBA/AUCBB x 100%

    Time frame: 0.5, 0.75, 1, 2, 4, 6, 12, 24, 48, 72, and 96 hours, post-dose

  2. Effect of gamma-cyclodextrin on absorption rate constant (Ka, h-1) of berberine

    The difference in the absorption rate constants (Ka, h-1) of berberine obtained after oral administration of BBA, and BB.

    Time frame: 0.5, 0.75, 1, 2, 4, 6, 12, 24, 48, 72, and 96 hours, post-dose

  3. Effect of gamma-cyclodextrin on the maximal concentration (ng/ml) of berberine in blood

    The difference in Cmax (ng/ml) of berberine obtained after oral administration of BBA and BB.

    Time frame: 0.5, 0.75, 1, 2, 4, 6, 12, 24, 48, 72, and 96 hours, post-dose

  4. Effect of gamma-cyclodextrin on time (h) to reach maximum plasma concentration of berberine

    The difference in Tmax (h) of berberine obtained after oral administration of BBA, and BB.

    Time frame: 0.5, 0.75, 1, 2, 4, 6, 12, 24, 48, 72, and 96 hours, post-dose

  5. Effect of gamma-cyclodextrin on Mean absorption time (h) of berberine

    The difference in MAT (h) of berberine obtained after oral administration of BBA, and BB.

    Time frame: 0.5, 0.75, 1, 2, 4, 6, 12, 24, 48, 72, and 96 hours, post-dose

07

Study locations

4 sites
  • CARDIOMED Family Health Center, LLC of the Ministry of Health of the Republic of Armenia
    Yerevan, Armenia
  • Institute of Fine Organic Chemistry of the National Academy of Science
    Yerevan, Armenia
    • Areg Hovhannisyan, PhD Areg Hovhannisyan, PhD, PhD · Contactareglab@mail.ru · +37494282018
  • Scientific Center of Drug and Medical Technologies Expertise
    Yerevan, Armenia
  • Phytomed AB
    Vaxtorp, HL 31275, Sweden
08

References and documents

Publications

  • Liu CS, Zheng YR, Zhang YF, Long XY. Research progress on berberine with a special focus on its oral bioavailability. Fitoterapia. 2016 Mar;109:274-82. doi: 10.1016/j.fitote.2016.02.001. Epub 2016 Feb 2. PubMed 26851175 ↗
  • Xu X, Yi H, Wu J, Kuang T, Zhang J, Li Q, Du H, Xu T, Jiang G, Fan G. Therapeutic effect of berberine on metabolic diseases: Both pharmacological data and clinical evidence. Biomed Pharmacother. 2021 Jan;133:110984. doi: 10.1016/j.biopha.2020.110984. Epub 2020 Nov 10. PubMed 33186794 ↗
  • Loftsson T, Moya-Ortega MD, Alvarez-Lorenzo C, Concheiro A. Pharmacokinetics of cyclodextrins and drugs after oral and parenteral administration of drug/cyclodextrin complexes. J Pharm Pharmacol. 2016 May;68(5):544-55. doi: 10.1111/jphp.12427. Epub 2015 Jun 9. PubMed 26059798 ↗
  • Kamigauchi M, Kawanishi K, Ohishi H, Ishida T. Inclusion effect and structural basis of cyclodextrins for increased extraction of medicinal alkaloids from natural medicines. Chem Pharm Bull (Tokyo). 2007 May;55(5):729-33. doi: 10.1248/cpb.55.729. PubMed 17473458 ↗
  • Hopwood VL, Pathak S. Improved quality of Giemsa banding by the use of trypsin concentrate. Am Biotechnol Lab. 1994 Oct;12(11):52. No abstract available. PubMed 7765426 ↗
  • Tannous M, Caldera F, Hoti G, Dianzani U, Cavalli R, Trotta F. Drug-Encapsulated Cyclodextrin Nanosponges. Methods Mol Biol. 2021;2207:247-283. doi: 10.1007/978-1-0716-0920-0_19. PubMed 33113141 ↗
  • Uekama K. Design and evaluation of cyclodextrin-based drug formulation. Chem Pharm Bull (Tokyo). 2004 Aug;52(8):900-15. doi: 10.1248/cpb.52.900. PubMed 15304981 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 14, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04918667
Lead sponsor
EuroPharma, Inc.
Collaborators
Scientific Center of Drug and Medical Technologies Expertise of the Ministry of Health, Armenia, Cardiomed LLC, Armenia, Institute of Fine Organic Chemistry of the National Academy of Science, Armenia, Phytomed AB, Sweden
Responsible party
Sponsor
First posted
Jun 9, 2021
Start date
Sep 2024 (estimated)
Primary completion
Nov 2025 (estimated)
Completion
Dec 2026 (estimated)
Last update
Sep 14, 2023

Study contacts

Alexander G. Panossian, PhD
Contact
ap@phytomed.se
+46733306226
Jennifer Hansgate
Contact
jhansgate@europharmausa.com
Aghavni Ginosyan, PhD, MD
principal investigator · Scientific Center of Drug and Medical Technologies Expertise of the Ministry of Health, Armenia
Samvel Hairumyan, PhD, MD
principal investigator · CARDIOMED Family Health Center, LLC of the Ministry of Health of the Republic of Armenia
Areg Hovhannisyan, PhD
principal investigator · Institute of Fine Organic Chemistry of the National Academy of Science, Armenia
Alexander G Panossian, PhD
study director · Phytomed AB, Sweden

Oversight

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

Not currently enrolling

This study is not yet recruiting, as verified in Sep 2023. You cannot join it, but the record below documents what was studied.

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