Probiotic Supplementation and Food Intake and Knowledge Among Patients and Consumers

M. Nguyen, K. K. Ferge, A. R. Vaughn, W. Burney, L. H. Teng, A. Pan, V. Nguyen, Raja K. Sivamani

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


The consumption of probiotics has gained popularity, highlighting the importance for consumers and clinicians to be aware of their compositions and health effects. The primary objective was to determine incentives for taking probiotics and knowledge about probiotic composition among consumers of various education levels, ethnicities, and locations. A secondary objective was to determine brands, dosages, prices, advertised benefits, and refrigeration status of commercially available probiotics in the Sacramento region. This was a voluntary anonymous online survey conducted from May to August 2017. Surveys were administered at the University of California Davis (UCD) Dermatology Clinic, as well as at approved locations within a 100-mi. radius. Data analysis was performed at the UCD Dermatology clinic. Eligible participants age 18 years and older were asked to complete a voluntary anonymous online survey. A random sample of participants were recruited from the UCD Dermatology clinic, local schools, and health food stores within the designated parameters. We collected 396 surveys, 97% of which were completed. Of those surveyed, 39.4% have previously taken probiotics, 44.6% could identify at least one species present in their supplement, 42.5% could identify the number of strains, and 33.0% could identify the dosage. Gut health was the most common reason for taking probiotics (58.1%). Most rated price as important when purchasing probiotics (70.3%). Although probiotic use is prevalent in Sacramento, most people are unfamiliar with the composition of their supplement. More evidence is needed to guide consumers in making more educated decisions.

Original languageEnglish (US)
JournalProbiotics and Antimicrobial Proteins
StateAccepted/In press - Jan 1 2019


  • Health
  • Probiotic
  • Supplements
  • Survey

ASJC Scopus subject areas

  • Microbiology
  • Molecular Medicine
  • Molecular Biology


Dive into the research topics of 'Probiotic Supplementation and Food Intake and Knowledge Among Patients and Consumers'. Together they form a unique fingerprint.

Cite this