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Completed

NCT Number: NCT06573814

The Effects of Bio Gelee Royale Forte on Immune Health in Healthy Adults

The objective of this study is to evaluate the safety and efficacy of Bio Gelee Royale Forte compared to placebo on frequency, severity, and duration of upper respiratory tract infections (URTIs) among adults who are otherwise healthy but susceptible to URTIs during cold and flu season. Additionally, the safety and tolerability of Bio Gelee Royale Forte, as compared to placebo, will be measured by the occurrence of and/or changes in treatment emergent adverse effects.

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Key information

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

KGK Science Inc.

London, Ontario, N6B3L1, Canada

About this study

The investigational product (IP), Bio Gelee Royale Forte, contains royal jelly which is secreted by the hypopharyngeal and mandibular glands of nurse bees. Royal jelly is commonly used as a functional food due to its antibacterial, anti-oxidant, anti-inflammatory, and anti-aging properties. While current evidence suggests royal jelly may play a role in improving human health, little is known about the effects of royal jelly on immune function. Therefore, the objective of this study is to investigate the efficacy of Bio Gelee Royale Forte compared to placebo on immune health in a healthy adult population with self-reported susceptibility to URTIs during cold and flu season.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Males and females between 18-65 years of age, inclusive
  • Females not of child-bearing potential, defined as those who have undergone a sterilization procedure (e.g. hysterectomy, bilateral oophorectomy, bilateral tubal ligation, complete endometrial ablation) or have been post-menopausal for at least 1 year prior to screening

Or,

Individuals of child-bearing potential must self-report confirmation they are not pregnant, do not plan to become pregnant, and agree to use a medically approved method of birth control for the duration of the study. All hormonal birth control must have been in use for a minimum of three months. Acceptable methods of birth control include:

  • Hormonal contraceptives including oral contraceptives, hormone birth control patch (Ortho Evra), vaginal contraceptive ring (NuvaRing), injectable contraceptives (Depo-Provera, Lunelle), or hormone implant (Norplant System)
  • Double-barrier method
  • Intrauterine devices
  • Non-heterosexual lifestyle or agrees to use contraception if planning on changing to heterosexual partner(s)
  • Vasectomy of partner at least 6 months prior to screening
  • Abstinence
  • At least two self-reported incidences of URTI in the last 12 months
  • Agrees to maintain current lifestyle as much as possible throughout the study, including diet, exercise, and sleep
  • Agrees to maintain medications/supplements (particularly those used for immunity support) as much as possible throughout the study and not add new supplements to their routine
  • Able and willing to complete all study assessments
  • Provided voluntary and informed consent to participate in the study
  • Generally healthy as determined by medical history with no unstable diagnosed medical conditions

Exclusion criteria

  • Individuals who are pregnant, breast feeding, or planning to become pregnant during the study
  • Allergy, sensitivity, intolerance, or dietary restriction preventing consumption of investigational product or placebo ingredients
  • Self-reported allergy to bees or other insects
  • Self-reported autoimmune disease or are immune compromised due to other factors
  • Self-reported current or anticipated severe environmental allergies during the study period requiring medication or need for allergy shots
  • Self-reported ongoing diagnosis of acute or chronic respiratory illness (e.g., asthma, chronic bronchitis, sinusitis, pharyngitis, chronic obstructive pulmonary disease (COPD))
  • Self-reported ongoing and unstable diseases/conditions in the past three months, including:
  • Arthritis and joint diseases
  • Gastrointestinal diseases
  • Hypertension
  • Type I or type II diabetes
  • Cardiovascular disease
  • Kidney diseases
  • Liver diseases
  • Thyroid condition
  • Self-reported surgery in the past three months or individuals who have planned surgery during the course of the study
  • Self-reported cancer, except skin basal cell carcinoma completely excised with no chemotherapy or radiation with a follow up that is negative. Volunteers with cancer in full remission for more than five years after diagnosis are acceptable
  • Alcohol intake average of >2 standard drinks per day
  • Alcohol or drug abuse within the last 12 months that has required treatment
  • Current use of prescribed and/or over-the-counter (OTC) medications/supplements that may impact the efficacy and/or safety of the investigational product
  • Participation in other clinical research studies 30 days prior to screening
  • Individuals who are unable to give informed consent
  • Any other condition or lifestyle factor that may adversely affect the participant's ability to complete the study or its measures or pose significant risk to the participant

Treatment and study plan

Bio Gelee Royale Forte

Dietary Supplement

Two capsules of Bio Gelee Royale Forte will be taken in the morning on empty stomach once per day for 98 days.

Other names: Royal Jelly

Placebo

Other

Two capsules of placebo will be taken in the morning on empty stomach once per day for 98 days.

Primary outcomes

  1. The difference in frequency, severity, and duration of upper respiratory tract infections (URTI).

    Time frame: Day -14 to day 84

    The difference in frequency, severity, and duration of URTIs as assessed by the Wisconsin Upper Respiratory Symptom Survey-24 (WURSS-24) questionnaire over the 84-day supplementation period between Bio Gelee Royale Forte and Placebo. The average severity score of each symptom is scored on scale of 0- no symptom to 7-severe symptom. A higher score would indicate worse outcome.

Secondary outcomes

  1. The difference in frequency of URTIs from day -14 to day -1.

    Time frame: day -14 to day -1

    The difference in frequency of URTIs from day -14 to day -1 as assessed by the WURSS-24 questionnaire, will be compared between Bio Gelee Royale Forte and Placebo.

  2. The difference in frequency of URTIs from day -14 to day 84.

    Time frame: day -14 to day 84

    The difference in frequency of URTIs from day -14 to day -1 as assessed by the WURSS-24 questionnaire will be compared between Bio Gelee Royale Forte and Placebo.

  3. The difference in severity of URTI symptoms from day -14 to day -1.

    Time frame: day -14 to day -1

    The difference in severity of URTIs from day -14 to day -1 as assessed by the WURSS-24 questionnaire and determined by the average severity scores of URTI symptoms will be compared between Bio Gelee Royale Forte and Placebo.

  4. The difference in severity of URTI symptoms from day -14 to day -1.

    Time frame: day -14 to day -1

    The difference in severity of URTIs from day -14 to day -1 as assessed by the WURSS-24 questionnaire and determined by the area under the curve (AUC) for daily total symptom scores will be compared between Bio Gelee Royale Forte and Placebo. Area under the curve (AUC) for URTI symptoms from WURSS-24 is calculated daily from day -14 to day -1.

  5. The difference in severity of URTI symptoms from day -14 to day 84.

    Time frame: day -14 to day 84

    The difference in severity of URTIs from day -14 to day 84 as assessed by the WURSS-24 questionnaire and determined by the average severity scores of URTI symptoms will be compared between Bio Gelee Royale Forte and Placebo.

  6. The difference in severity of URTI symptoms from day -14 to day 84.

    Time frame: day -14 to day 84

    The difference in severity of URTIs from day -14 to day 84 as assessed by the WURSS-24 questionnaire and determined by the area under the curve (AUC) for daily total symptom scores will be compared between Bio Gelee Royale Forte and Placebo.

  7. The difference in duration of URTI symptoms from day -14 to day -1.

    Time frame: day -14 to day 84

    The difference in duration of URTIs from day -14 to day -1 as assessed by the WURSS-24 questionnaire will be compared between Bio Gelee Royale Forte and Placebo.

  8. The difference in duration of URTI symptoms from day -14 to day 84.

    Time frame: day -14 to day 84

    The difference in duration of URTIs from day -14 to day 84 as assessed by the WURSS-24 questionnaire will be compared between Bio Gelee Royale Forte and Placebo.

  9. Severity of URTI symptoms over the 84-day supplementation period.

    Time frame: baseline to day 84

    Severity of URTI symptoms over the 84-day supplementation period as determined by the average severity score of URTI symptoms. The average severity score of each symptom is scored on scale of 0- no symptom to 7-severe symptom. A higher score would indicate worse outcome.

  10. The difference in proportion of participants with incidence of URTIs from day -14 to day -1.

    Time frame: day -14 to day -1

    The difference in proportion of participants with incidence of URTIs from day -14 to day -1 as assessed by the WURSS-24 questionnaire will be compared between Bio Gelee Royale Forte and Placebo.

  11. The difference in proportion of participants with incidence of URTIs from baseline to day 84.

    Time frame: baseline to day 84

    The difference in proportion of participants with incidence of URTIs from baseline to day 84 as assessed by the WURSS-24 questionnaire will be compared between Bio Gelee Royale Forte and Placebo.

  12. The difference in proportion of participants with incidence of URTIs from day -14 to day 84.

    Time frame: day -14 to 84

    The difference in proportion of participants with incidence of URTIs from day -14 to day 84 as assessed by the WURSS-24 questionnaire will be compared between Bio Gelee Royale Forte and Placebo.

  13. The difference in number of sick days from day -14 to day -1.

    Time frame: day -14 to day -1

    The difference in number of sick days from day -14 to day -1 as assessed by the WURSS-24 questionnaire will be compared between Bio Gelee Royale Forte and Placebo.

  14. The difference in number of sick days from baseline to day 84.

    Time frame: baseline to day 84

    The difference in number of sick days from baseline to day 84 as assessed by the WURSS-24 questionnaire will be compared between Bio Gelee Royale Forte and Placebo.

  15. The difference in number of sick days from day -14 to day 84.

    Time frame: day -14 to day 84

    The difference in number of sick days from day -14 to day 84 as assessed by the WURSS-24 questionnaire will be compared between Bio Gelee Royale Forte and Placebo.

  16. Use of prescription and non-prescription cold/flu medications to treat URTI symptoms between day -14 to day -1.

    Time frame: day -14 to day -1

    Use of prescription and non-prescription cold/flu medications to treat URTI symptoms between day -14 to day -1 will be compared between Bio Gelee Royale Forte and Placebo.

  17. Use of prescription and non-prescription cold/flu medications to treat URTI symptoms between baseline to day 84.

    Time frame: baseline to day 84

    Use of prescription and non-prescription cold/flu medications to treat URTI symptoms between baseline to day 84 will be compared between Bio Gelee Royale Forte and Placebo.

  18. Use of prescription and non-prescription cold/flu medications to treat URTI symptoms between day -14 to day 84.

    Time frame: day -14 to day 84

    Use of prescription and non-prescription cold/flu medications to treat URTI symptoms between day -14 to day 84 will be compared between Bio Gelee Royale Forte and Placebo.

Other outcomes

  1. Incidence of post-emergent adverse effects between day -14 to day 84.

    Time frame: day -14 to day 84

    Incidence of post-emergent adverse effects between day -14 to day 84.

Sponsors and collaborators

Lead sponsor

Medex d.o.o.

Industry

Registry information

Official study title

A Randomized, Triple-blind, Placebo Controlled, Parallel Clinical Trial to Investigate the Efficacy of Bio Gelee Royale Forte on Immune Health in Healthy Adults

Important dates

Study start
2024
Primary completion
2025
Study completion
2025
First posted
Aug 27, 2024
Registry last updated
Apr 29, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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