References

Citing a study does not mean it tested PrimeBiome. None of the papers below evaluated this specific product. They describe the underlying science of individual ingredients and concepts. Please verify each citation in PubMed and read the original paper before drawing conclusions.

Gut-skin axis

1. Salem I, Ramser A, Isham N, Ghannoum MA. The gut microbiome as a major regulator of the gut-skin axis. Frontiers in Microbiology. 2018;9:1459.
2. O'Neill CA, Monteleone G, McLaughlin JT, Paus R. The gut-skin axis in health and disease: a paradigm with therapeutic implications. BioEssays. 2016;38(11):1167-1176.

Probiotics and prebiotics

3. Hill C, Guarner F, Reid G, et al. Expert consensus document: the ISAPP consensus statement on the scope and appropriate use of the term probiotic. Nature Reviews Gastroenterology & Hepatology. 2014;11:506-514.
4. Gibson GR, Hutkins R, Sanders ME, et al. Expert consensus document: the ISAPP consensus statement on the definition and scope of prebiotics. Nature Reviews Gastroenterology & Hepatology. 2017;14:491-502.
5. Sanders ME, Merenstein DJ, Reid G, Gibson GR, Rastall RA. Probiotics and prebiotics in intestinal health and disease: from biology to the clinic. Nature Reviews Gastroenterology & Hepatology. 2019;16:605-616.
6. Konuray G, Erginkaya Z. Potential use of Bacillus coagulans in the food industry. Foods. 2018;7(6):92.
7. Borgeraas H, Johnson LK, Skattebu J, Hertel JK, Hjelmesaeth J. Effects of probiotics on body weight, body mass index, fat mass and fat percentage in subjects with overweight or obesity: a systematic review and meta-analysis of randomized controlled trials. Obesity Reviews. 2018;19(2):219-232.

Botanical ingredients

7. Chaudhuri RK, Bojanowski K. Bakuchiol: a retinol-like functional compound revealed by gene expression profiling and clinically proven to have anti-aging effects. International Journal of Cosmetic Science. 2014;36(3):221-230. (Topical use.)
8. Dhaliwal S, Rybak I, Ellis SR, et al. Prospective, randomized, double-blind assessment of topical bakuchiol and retinol for facial photoageing. British Journal of Dermatology. 2019;180(2):289-296. (Topical use.)
9. Neelakantan N, Narayanan M, de Souza RJ, van Dam RM. Effect of fenugreek (Trigonella foenum-graecum L.) intake on glycemia: a meta-analysis of clinical trials. Nutrition Journal. 2014;13:7.
10. Kennedy DO, Scholey AB, Tildesley NT, Perry EK, Wesnes KA. Modulation of mood and cognitive performance following acute administration of Melissa officinalis (lemon balm). Pharmacology Biochemistry and Behavior. 2002;72(4):953-964.
11. Viljoen E, Visser J, Koen N, Musekiwa A. A systematic review and meta-analysis of the effect and safety of ginger in the treatment of pregnancy-associated nausea and vomiting. Nutrition Journal. 2014;13:20.
12. Mori K, Inatomi S, Ouchi K, Azumi Y, Tuchida T. Improving effects of the mushroom Yamabushitake (Hericium erinaceus) on mild cognitive impairment: a double-blind placebo-controlled clinical trial. Phytotherapy Research. 2009;23(3):367-372.

Regulatory and consumer-protection sources

13. U.S. Food and Drug Administration. Dietary Supplements and the Dietary Supplement Health and Education Act of 1994 (DSHEA). fda.gov.
14. U.S. Food and Drug Administration. Structure/function claims for dietary supplements. fda.gov.
15. Federal Trade Commission. Guides Concerning the Use of Endorsements and Testimonials in Advertising, 16 CFR Part 255.

Manufacturer information

• PrimeBiome official page, refund policy and shipping policy (pricing, ingredient list, guarantee and shipping terms), reviewed October 2026: getprimebiome.com.