Qualia Vitamin C+ Placebo-Controlled Clinical Study Results

OVERVIEW OF QUALIA VITAMIN C+ STUDY

In a 4-week, placebo-controlled study, Qualia Vitamin C+ significantly increased blood Vitamin C levels compared to control.^* Study results have not yet been peer reviewed and the study findings may change during the publication process.

HOW THE QUALIA VITAMIN C+ STUDY WAS DESIGNED

There were two groups in the study: one took Qualia Vitamin C+ capsules and the other took placebo capsules. Participants were randomly assigned to be in one of the two groups.

The study was double-blinded, which means that neither the researchers conducting the study nor the participants knew who received Qualia Vitamin C+ or placebo capsules until after the participants had completed the study protocol. 

Participants took either Qualia Vitamin C+ or a placebo daily for 28 days. The instructions were to take two capsules every day anytime in the morning, with or without food. 

The primary study endpoint was the change in vitamin C levels, which was determined by comparing initial and final blood vitamin C results.

QUALIA VITAMIN C+ STUDY RESULTS

Qualia Vitamin C+ Increased Blood Vitamin C Levels Compared to Placebo^†*

The study was conducted between December 2025 and January 2026. A group of 36 healthy adults were recruited to participate and scheduled to measure baseline blood vitamin C levels at a participating lab location prior to beginning supplementation.

All participants successfully completed the initial test to obtain their baseline vitamin C levels and were instructed to take Qualia Vitamin C+ or placebo. Thirty-five of the 36 participants successfully completed a second vitamin C lab test after taking Qualia Vitamin C+ or a placebo for 28 days. 

Participants who had both initial and final vitamin C lab test data, and who took the products on at least 80% of days were considered to have fulfilled the protocol adequately. A per protocol data analysis was conducted on the 32 participants who fulfilled these criteria.

These participants ranged from 34 to 77 years old, with an average age of 48 years. Participants were a mix of females (N = 17) and males (N = 15).

Qualia Vitamin C+ increased blood Vitamin C levels. This increase was statistically significant compared to the placebo group.†*

†Disclaimer: Based on a placebo-controlled study registered at ClinicalTrials.gov (NCT07285109). Adjusted between-group difference from linear mixed model analysis controlling for age, sex, and baseline Vitamin C; group×time interaction p = 0.02. Individual results may vary. Preliminary results of the study can be found at https://clinicaltrials.gov/study/NCT07285109.*

Qualia Vitamin C+ was highly rated††*

After completing the study, participants were sent a follow-up survey and asked to rate Qualia Vitamin C+. Thirty-five of 36 participants completed this survey. The average rating for Qualia Vitamin C+ was 4.28 out of 5. 

Participants were also asked about their experience of taking Qualia Vitamin C+—answer choices were Excellent, Good, No Effect, Poor, and Very Poor. Two-thirds (67%) participants rated their experience taking Qualia Vitamin C+ as Good or Excellent, and half (50%) rated it as Excellent.††*

††Disclaimer: The survey contained a small number of participants who received the product for free.

*These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure or prevent any disease. The information on this site is for educational purposes only and should not be considered medical advice. Please speak with an appropriate healthcare professional when evaluating any wellness related therapy. Please read the full medical disclaimer before taking any of the products offered on this site.