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

10 juin 2026 mis à jour par: 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.

Aperçu de l'étude

Statut

Pas encore de recrutement

Les conditions

Intervention / Traitement

Description détaillée

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.

Type d'étude

Interventionnel

Inscription (Estimé)

152

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Sauvegarde des contacts de l'étude

Lieux d'étude

  • États-Unis
    • California
      • Carlsbad, California, États-Unis, 92008
        • Qualia Life Sciences

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

  • Adulte
  • Adulte plus âgé

Accepte les volontaires sains

Oui

La description

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.

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Science basique
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Double

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Expérimental: 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.
Complément alimentaire: 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.
Comparateur placebo: 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.
Autre: 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.
Expérimental: 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.
Complément alimentaire: 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.
Comparateur placebo: 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.
Autre: 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.

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Change in blood Vitamin C levels in the suboptimal stratum
Délai: 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

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Change in blood Vitamin C levels in the entire cohort
Délai: 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
Délai: 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
Délai: 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
Délai: 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
Délai: 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
Délai: 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
Délai: 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

Autres mesures de résultats

Mesure des résultats
Description de la mesure
Délai
Overall Experience Questionnaire
Délai: 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
Délai: 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

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Qualia Life Sciences

Les enquêteurs

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

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Estimé)

1 juillet 2026

Achèvement primaire (Estimé)

1 novembre 2026

Achèvement de l'étude (Estimé)

1 décembre 2026

Dates d'inscription aux études

Première soumission

10 juin 2026

Première soumission répondant aux critères de contrôle qualité

10 juin 2026

Première publication (Réel)

17 juin 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

17 juin 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

10 juin 2026

Dernière vérification

1 juin 2026

Plus d'information

Termes liés à cette étude

Mots clés

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • QLS-023

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

NON

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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