The Impact of Qualia Vitamin C+ on Blood Vitamin C Levels
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. Approximately 36 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, assessed via in lab blood collection at baseline and study completion. Secondary endpoints include questionnaires measuring health-related cognitive functioning and stress (PROMIS Cognitive Function - Short Form 8a and the Perceived Stress Scale-10), the Single-item Assessment of Immune Fitness, evaluation of safety and tolerability, and an Overall Experience Questionnaire (Appendices 1, 4-7). All assessments, including electronic questionnaires, are completed remotely without in-person visits.
• 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 years or older. 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. \[Note: The services offered by Ulta Lab Tests are available only in the United States and not to residents of the states of New Jersey, New York, and Rhode Island.\] Willing to avoid starting new or stopping any existing dietary supplements throughout the study.