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Efficacy of Transfer Factor to Prevent Upper Respiratory Tract Infections in Healthy Adults

A Double Blind Study on the Efficacy of a Colostrum and Egg Yolk Supplement vs. Placebo to Reduce Frequency and Duration of Upper Respiratory Tract Infections in Healthy Adults

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01106183
Enrollment
49
Registered
2010-04-19
Start date
2010-01-31
Completion date
2010-03-31
Last updated
2025-03-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Upper Respiratory Tract Infections Due to Influenza or Rhinovirus

Brief summary

The goals of our study are to critically evaluate if a healthy population supplemented with Transfer factor experiences fewer incidences of colds and flu, or experience shorter duration of illness compared to an identical population taking placebo. In this study we will give either Transfer factor or a placebo to two groups of healthy adult men and women for a period of 7 weeks in a double-blind experimental design. The frequency and duration of colds and flu-like symptoms will be recorded during the course of the study. Saliva samples will be collected weekly and assessed for salivary IgA secretion rate. Data from this study will establish the efficacy of Transfer Factor to support a healthy immune system.

Interventions

DIETARY_SUPPLEMENTtransfer factor

capsules, 2 per day by mouth for 7 weeks.

DIETARY_SUPPLEMENTPlacebo

cornstarch, 2 capsules per day by mouth.

Sponsors

University of Utah
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 40 Years
Healthy volunteers
Yes

Inclusion criteria

* Males and females (18 - 40) who are in good health

Exclusion criteria

* Subjects who are allergic to eggs (on which the supplement is based). If a volunteer is not sure if they are allergic to eggs or milk. Those who are currently smoking, have cardiovascular disease, cancer, diabetes, liver disease, renal insufficiency, any chronic disease that might interfere with study participation, BMI above 40 kg/m2, consumption of \>12 alcoholic drinks weekly, or unwillingness to stop current supplement intake. Women who are pregnant or lactating will also be excluded from the study.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026