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The Impact of Qualia Vitamin C+ on Individuals With Suboptimal and Adequate Vitamin C Levels

10 juni 2026 bijgewerkt door: Qualia Life Sciences
This is a randomized, double-blind, placebo-controlled, parallel-group, study evaluating the effect of a Qualia Vitamin C+ formulation on Whole Blood Vitamin C levels in the blood of healthy adults aged 25 years or older that have suboptimal vitamin C blood levels (i.e., 0.4 - 0.9 mg/dL) and those with adequate vitamin C blood levels (≥0.9 mg/dL). Approximately 152 (76 in the suboptimal stratum and 76 in the adequate stratum) participants will be randomized to one of two study arms: Qualia Vitamin C+ or placebo. Each participant will take two capsules of their assigned product once daily in the morning, with or without food, over a 28-day period. The primary outcome is the change in blood vitamin C levels in the suboptimal stratum, assessed via lab blood collection at baseline and study completion. Secondary endpoints include the change in blood vitamin C levels, assessed via lab blood collection at baseline and study completion in the entire group, questionnaires measuring health-related Quality of Life and fatigue (RAND-36 and the FACIT-Fatigue Scale), the Single-item Assessment of Immune Fitness, evaluation of safety and tolerability, and an Overall Experience Questionnaire. Further, a sub-group analysis of fatigued participants meeting at least mild to moderate fatigue as measured by the FACIT-Fatigue will be a secondary objective. The NCI Fruits and Vegetable Screener - All-Day Screener will also be used to assess intake at baseline and study completion. All assessments, including electronic questionnaires, are completed remotely without in-person visits.

Studie Overzicht

Toestand

Nog niet aan het werven

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

Design: Randomized Double-Blind Placebo-Controlled Parallel 4-Armed Trial (4 arms) with 1:1:1:1 allocation, stratified by gender, age, and baseline vitamin C levels. Arms: (1) Suboptimal Qualia Vitamin C+, (2) Suboptimal Placebo, (3) Adequate Qualia Vitamin C+, and (4) Adequate Placebo. Participants will be stratified by gender and age at screening before being randomly assigned in a 1:1:1:1 ratio to one of the two study arms per stratum. Each participant will take two capsules of their assigned product daily in the morning, with or without food, for 28 consecutive days. Participants will receive a 28-day supply (56 capsules) of their assigned intervention. The active product Qualia Vitamin C+ delivers 500 mg total vitamin C per daily serving (2 capsules) and contains a blend of Vitamin C (from liposomal vitamin C, mineral ascorbates, and fruit extracts), bioflavonoids, and ferulic acid. The placebo contains inert rice powder in a vegetable/cellulose capsule. Blood vitamin C levels will be measured via blood draws through Ulta Labs, which uses licensed blood draw centers operated by Quest Diagnostics. To maintain double-blinding, a designated Qualia Life Sciences staff member independent of the research team will assign and label all study products as A or B. Both participants and study personnel will remain blinded to group assignments until study completion. The primary analysis will be ANCOVA on Day 28 serum vitamin C in the suboptimal stratum, with baseline serum vitamin C, age, and sex as covariates and treatment arm as the factor of interest. Total enrollment: 152.

Studietype

Ingrijpend

Inschrijving (Geschat)

152

Fase

  • Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Contact Back-up

Studie Locaties

  • Verenigde Staten
    • California
      • Carlsbad, California, Verenigde Staten, 92008
        • Qualia Life Sciences

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Volwassen
  • Oudere volwassene

Accepteert gezonde vrijwilligers

Ja

Beschrijving

Inclusion Criteria:

  • Provide voluntary, written, informed consent to participate in the study.
  • Agree to provide a valid cell phone number and are willing to receive communications through text.
  • Can read and write English.
  • Willing to complete questionnaires, records, and diaries associated with the study.
  • Healthy male and female participants aged 25 to 75 years old.
  • Willing to go to an Ulta Labs Patient Service Center location for a Blood Vitamin C Test (baseline and Day 29) and located within a convenient distance of participating locations. The services offered by Ulta Lab Tests are available only in the United States and not to residents of the states of New Jersey, New York, and Rhode Island.
  • Willing to avoid starting new or stopping any existing dietary supplements throughout the study.
  • Willing to maintain a consistent diet throughout the study.

Exclusion Criteria:

  • Women who are pregnant, breastfeeding, or planning to become pregnant or start breastfeeding during the trial.
  • Known food intolerances/allergy to any ingredients in the product.
  • Having any of the following conditions: Psychiatric conditions, neurologic disorders, endocrine disorders, cancer.
  • Having had a significant cardiovascular event in the past 6 months.
  • Taking MAO inhibitors, SSRIs, or any other psychiatric or neurological medicines.
  • On immunosuppressive therapy.
  • Adults lacking capacity to consent.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Fundamentele wetenschap
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Dubbele

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Suboptimal Qualia Vitamin C+
Participants with suboptimal vitamin C blood levels (0.4 - 0.9 mg/dL) taking two capsules of Qualia Vitamin C+ once daily in the morning, with or without food, for 28 days. 38 participants.
Voedingssupplement: Qualia Vitamin C+
A novel multi-ingredient formulation delivering 500 mg total vitamin C per daily serving (2 capsules). It contains a blend of Vitamin C (from liposomal vitamin C, mineral ascorbates, and fruit extracts), bioflavonoids, and ferulic acid. Participants take two capsules daily in the morning, with or without food, for 28 consecutive days.
Placebo-vergelijker: Suboptimal Placebo
Participants with suboptimal vitamin C blood levels (0.4 - 0.9 mg/dL) taking two capsules of placebo (inert rice powder in a vegetable/cellulose capsule) once daily in the morning, with or without food, for 28 days. 38 participants.
Ander: Placebo
Contains inert rice powder in a vegetable/cellulose capsule. Participants take two capsules daily in the morning, with or without food, for 28 consecutive days.
Experimenteel: Adequate Qualia Vitamin C+
Participants with adequate vitamin C blood levels (≥0.9 mg/dL) taking two capsules of Qualia Vitamin C+ once daily in the morning, with or without food, for 28 days. 38 participants.
Voedingssupplement: Qualia Vitamin C+
A novel multi-ingredient formulation delivering 500 mg total vitamin C per daily serving (2 capsules). It contains a blend of Vitamin C (from liposomal vitamin C, mineral ascorbates, and fruit extracts), bioflavonoids, and ferulic acid. Participants take two capsules daily in the morning, with or without food, for 28 consecutive days.
Placebo-vergelijker: Adequate Placebo
Participants with adequate vitamin C blood levels (≥0.9 mg/dL) taking two capsules of placebo (inert rice powder in a vegetable/cellulose capsule) once daily in the morning, with or without food, for 28 days. 38 participants.
Ander: Placebo
Contains inert rice powder in a vegetable/cellulose capsule. Participants take two capsules daily in the morning, with or without food, for 28 consecutive days.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Change in blood Vitamin C levels in the suboptimal stratum
Tijdsspanne: Baseline to Day 28
To assess between-group differences in the change in blood Vitamin C levels in the suboptimal stratum from baseline to Day 28 following supplementation with Qualia Vitamin C+ versus placebo. Assessed via Ulta Labs Vitamin C Test (lab blood collection).
Baseline to Day 28

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Change in blood Vitamin C levels in the entire cohort
Tijdsspanne: Baseline to Day 28
To assess between-group differences in the change in blood Vitamin C levels in the entire cohort from baseline to Day 28 following supplementation with Qualia Vitamin C+ versus placebo.
Baseline to Day 28
FACIT-Fatigue Scale
Tijdsspanne: Baseline to Day 28
To assess within-group and between-group differences in the FACIT-Fatigue Scale in both the sub-optimal vitamin C stratum and the entire cohort. Final score ranges from 0 to 52, where higher scores indicate less fatigue and better quality of life.
Baseline to Day 28
RAND-36
Tijdsspanne: Baseline to Day 28
To assess within-group and between-group differences in the RAND-36 (primary attention to the Vitality, General Health Perceptions, and Physical Functioning subscales) in both the sub-optimal vitamin C stratum and the entire cohort. Each domain is scored on a 0-100 scale, with higher scores indicating better health.
Baseline to Day 28
Single-item Assessment of Immune Fitness
Tijdsspanne: Baseline to Day 28
To assess within-group and between-group differences in the Single-item Assessment of Immune Fitness in both the sub-optimal vitamin C stratum and the entire cohort. A single numerical score between 0 and 10 is produced, with higher scores indicating better self-rated immune fitness.
Baseline to Day 28
Within-group change in blood Vitamin C levels
Tijdsspanne: Baseline to Day 28
To assess within-group differences in the change in blood Vitamin C levels in both the suboptimal stratum and entire cohort.
Baseline to Day 28
Proportion of suboptimal group achieving status normalization
Tijdsspanne: Week 4
To estimate the proportion of the suboptimal group participants achieving plasma vitamin C (≥0.9 mg/dL; i.e., 'status normalization') at Week 4.
Week 4
Safety and Tolerability survey
Tijdsspanne: Baseline, Day 7, Day 14, Day 21, and Day 28
To evaluate side effect profiles using a custom Safety and Tolerability survey.
Baseline, Day 7, Day 14, Day 21, and Day 28

Andere uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Overall Experience Questionnaire
Tijdsspanne: 5-7 days after final dose (Day 34-36)
Captures information that may be used for product evaluation and marketing, asked 5-7 days after the final dose of the test product.
5-7 days after final dose (Day 34-36)
NCI Fruits and Vegetable Screener - All-Day Screener
Tijdsspanne: Baseline and Day 28
Used to assess fruit and vegetable intake at baseline and study completion, for statistical control purposes only.
Baseline and Day 28

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Qualia Life Sciences

Onderzoekers

  • Hoofdonderzoeker: William Scuba, Qualia Life Sciences
  • Hoofdonderzoeker: Colin Gardner, PhD, Qualia Life Sciences
  • Hoofdonderzoeker: Sarah Blomquist, PhD, Qualia Life Sciences

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Geschat)

1 juli 2026

Primaire voltooiing (Geschat)

1 november 2026

Studie voltooiing (Geschat)

1 december 2026

Studieregistratiedata

Eerst ingediend

10 juni 2026

Eerst ingediend dat voldeed aan de QC-criteria

10 juni 2026

Eerst geplaatst (Werkelijk)

17 juni 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

17 juni 2026

Laatste update ingediend die voldeed aan QC-criteria

10 juni 2026

Laatst geverifieerd

1 juni 2026

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • QLS-023

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

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