CClinicalTrials.gg
CompletedNCT05336994Updated Sep 2, 2022

Vitamin/Mineral Absorption From Two Different Supplements

An interventional study of Multivitamin/mineral supplement A and Multivitamin/mineral supplement B in Healthy Nutrition, sponsored by University of California, Davis. Completed at 1 site in United States. Open to participants aged 18 Years to 32 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-09-02.

Sponsored by University of California, Davis · Not applicable, Interventional, and Other

Phase
Not applicable
Study type
Interventional
Enrollment
17
Allocation
Randomized
Ages
18 Years to 32 Years
Sex
All
01

Study summary

The objective of this project is to evaluate the postprandial serum and plasma vitamin and mineral levels in healthy adult men and women between 18 and 32 years of age, following a single intake of a multivitamin and mineral supplement processed in two different ways.

Read the detailed description

Serum or plasma levels of five vitamins and four minerals will be measured at baseline, and 1, 2, 4, and 6 hours after the intake of a multivitamin/mineral supplement processed by two different methods. The two methods involve using either conventional isolated vitamins and minerals blended together to provide approximately 100% of the Daily Value, or using the same amount of vitamins and minerals that have first been processing into liposomal forms before blending.

Participants are required to come for two study visits which are 5 to 7 days apart. Health screening will also be done at Study Visit 1. The order of supplement assignment will be randomized, performed in a double-blind manner.

02

Conditions studied

  • Healthy Nutrition

Keywords

  • Minerals
  • Vitamins
  • Absorption
03

In context

Lead sponsor

University of California, Davis is the lead sponsor of 798 studies on the registry; 146 are open to participants now.

Of its 65 completed or terminated interventional studies of FDA-regulated products, 43 (66%) have results posted.

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

04

Who can participate

Ages eligible
18 Years to 32 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Healthy males and females 18-32 years of age
  • BMI 18.5-32 kg/m2
  • Free from disease
  • Normal blood levels in the comprehensive metabolic panel, or values slightly out of range as approved by the study physician
  • Normal blood pressure (individuals whose average blood pressure is greater than 140/90 will be excluded from the study)
  • Suitable vein structure and access for successful placement of an indwelling catheter, as determined by our nurse phlebotomist

Exclusion criteria

Exclusion Criteria:

  • Alcohol consumption > 3 drinks/week (i.e., 1 bottle of beer, 1 glass of wine, and 1 shot of hard liquor)
  • Smoking
  • Vaping or using cannabis in any form
  • Using multivitamin/mineral supplements in the past two months
  • Currently taking supplements including botanical supplements, probiotics or fiber
  • Fruit consumption ≥ 2 cups/day
  • Vegetable consumption ≥ 3 cups/day
  • Coffee/tea ≥ 3 cups/day
  • Chronic/routine high-intensity exercise
  • Any chronic health conditions
  • Self-reported malabsorption
  • Currently taking prescription drugs
  • Indications of substance or alcohol abuse within the last 3 years
  • Unable to consent
05

Study design

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

Study arms

  • Experimental
    Multivitamin/mineral supplement A to B

    Participants will be randomly assigned to receive Supplement A and after 5-7 days of follow-up, they will receive Supplement B.

    Dietary Supplement: Multivitamin/mineral supplement A · Dietary Supplement: Multivitamin/mineral supplement B

  • Experimental
    Multivitamin/mineral supplement B to A

    Participants will be randomly assigned to receive Supplement B and after 5-7 days of follow-up, they will receive Supplement A.

    Dietary Supplement: Multivitamin/mineral supplement A · Dietary Supplement: Multivitamin/mineral supplement B

Interventions

  • Dietary supplementMultivitamin/mineral supplement A

    Oral administration of Supplement A

  • Dietary supplementMultivitamin/mineral supplement B

    Oral administration of Supplement B

06

What researchers measure

Primary outcomes

  1. Assess the serum or plasma levels of five vitamins and four minerals

    Total area-under-the-curve of serum Vitamin A

    Time frame: 6 hours

  2. Assess the serum or plasma levels of five vitamins and four minerals

    Total area-under-the-curve of serum folate

    Time frame: 6 hours

  3. Assess the serum or plasma levels of five vitamins and four minerals

    Total area-under-the-curve of serum Vitamin D

    Time frame: 6 hours

  4. Assess the serum or plasma levels of five vitamins and four minerals

    Total area-under-the-curve of serum Vitamin B-12

    Time frame: 6 hours

  5. Assess the serum or plasma levels of five vitamins and four minerals

    Total area-under-the-curve of plasma Vitamin C

    Time frame: 6 hours

  6. Assess the serum or plasma levels of five vitamins and four minerals

    Total area-under-the-curve of serum zinc

    Time frame: 6 hours

  7. Assess the serum or plasma levels of five vitamins and four minerals

    Total area-under-the-curve of serum iron

    Time frame: 6 hours

  8. Assess the serum or plasma levels of five vitamins and four minerals

    Total area-under-the-curve of serum manganese

    Time frame: 6 hours

  9. Assess the serum or plasma levels of five vitamins and four minerals

    Total area-under-the-curve of serum magnesium

    Time frame: 6 hours

Secondary outcomes

  1. Assess the serum or plasma levels of five vitamins and four minerals

    Maximum serum level of Vitamin A (mg/dL)

    Time frame: 6 hours

  2. Assess the serum or plasma levels of five vitamins and four minerals

    Maximum serum level of folate (mg/dL)

    Time frame: 6 hours

  3. Assess the serum or plasma levels of five vitamins and four minerals

    Maximum serum level of Vitamin D (mg/dL)

    Time frame: 6 hours

  4. Assess the serum or plasma levels of five vitamins and four minerals

    Maximum serum level of Vitamin B-12 (mg/dL)

    Time frame: 6 hours

  5. Assess the serum or plasma levels of five vitamins and four minerals

    Maximum plasma level of Vitamin C (mg/dL)

    Time frame: 6 hours

  6. Assess the serum or plasma levels of five vitamins and four minerals

    Maximum serum level of zinc (mg/dL)

    Time frame: 6 hours

  7. Assess the serum or plasma levels of five vitamins and four minerals

    Maximum serum level of iron (mg/dL)

    Time frame: 6 hours

  8. Assess the serum or plasma levels of five vitamins and four minerals

    Maximum serum level of manganese (mg/dL)

    Time frame: 6 hours

  9. Assess the serum or plasma levels of five vitamins and four minerals

    Maximum serum level of magnesium (mg/dL)

    Time frame: 6 hours

07

Study locations

1 site
  • Ragle Human Nutrition Research Center
    Davis, California 95616, 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 Sep 2, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05336994
Lead sponsor
University of California, Davis
Responsible party
Sponsor
First posted
Apr 20, 2022
Start date
Apr 29, 2022
Primary completion
Jul 30, 2022
Completion
Jul 30, 2022
Last update
Sep 2, 2022

Study contacts

Robert M. Hackman, PhD
principal investigator · Research Nutritionist

Oversight

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

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