NCT05843617

Brief Summary

The aim of the study was to compare the profiles of vitamin C serum concentration in healthy volunteers after the single oral administration either in a liposomal or traditional formulation.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
10

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Feb 2022

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

February 28, 2022

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 9, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

June 9, 2022

Completed
11 months until next milestone

First Submitted

Initial submission to the registry

April 25, 2023

Completed
11 days until next milestone

First Posted

Study publicly available on registry

May 6, 2023

Completed
Last Updated

August 1, 2024

Status Verified

July 1, 2024

Enrollment Period

3 months

First QC Date

April 25, 2023

Last Update Submit

July 31, 2024

Conditions

Keywords

Ascorbic AcidLiposomal Vitamin C

Outcome Measures

Primary Outcomes (2)

  • Total amount of ascorbic acid that has been absorbed, defined as AUC

    Comparison of the bioavailability of formulations based on the total amount of ascorbic acid that has been absorbed, defined as AUC (area under the curve)

    baseline, 30 minutes, 1, 2, 3, 4, 6, 8, 10, 24 hours post the administration

  • Maximum concentration of ascorbic acid (Cmax)

    Maximum concentration of ascorbic acid achieved in the blood after administration of both formulations

    baseline, 30 minutes, 1, 2, 3, 4, 6, 8, 10, 24 hours post the administration

Secondary Outcomes (1)

  • Concentration of ascorbic acid after 24 hours (C24h)

    24 hours post the administration

Study Arms (2)

Liposomal Vitamin C

EXPERIMENTAL

Single oral dose of liposomal vitamin C formulation

Dietary Supplement: Liposomal Vitamin C

Traditional Vitamin C

ACTIVE COMPARATOR

Single oral dose of traditional vitamin C formulation

Dietary Supplement: Traditional Vitamin C

Interventions

Liposomal Vitamin CDIETARY_SUPPLEMENT

1000 mg of ascorbic acid in liposomal formulation

Liposomal Vitamin C
Traditional Vitamin CDIETARY_SUPPLEMENT

1000 mg of ascorbic acid in traditional formulation

Traditional Vitamin C

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Women and men, 18-65 years old.
  • Signed informed consent.
  • No injuries or hospitalizations within the last 3 months.
  • Refraining from consuming any vitamin C supplements or foods enriched with vitamin C for a period of 72 hours. Limiting excessive consumption of red peppers, parsley (stalks), Brussels sprouts, broccoli, turnip, tomatoes, cabbage, spinach, watercress, citrus fruits, and citrus juices. Not taking acetylsalicylic acid (aspirin, polopiryna, etopiryna) during the study.
  • Participants should fast for at least 8-12 hours prior to the administration of the preparations.

You may not qualify if:

  • Unwilling to give consent.
  • Injuries within the last 3 months.
  • Cancer (current or past).
  • Renal dysfunction (eGFR \< 60 ml/min).
  • Gastrointestinal disorders (including use of antacids).
  • Tobacco use in any form.
  • Pregnancy/breastfeeding.
  • Patient after organ transplantation, after a stroke, use of anticoagulants, use of immunosuppressants.
  • Female patient receiving hormonal therapy (contraception).

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Medical University of Warsaw

Warsaw, Poland

Location

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Purpose
OTHER
Intervention Model
CROSSOVER
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 25, 2023

First Posted

May 6, 2023

Study Start

February 28, 2022

Primary Completion

June 9, 2022

Study Completion

June 9, 2022

Last Updated

August 1, 2024

Record last verified: 2024-07

Data Sharing

IPD Sharing
Will not share

Locations