Inc. names Seraphina Therapeutics among the top fastest-growing private consumer product companies

In an August 12, 2025, press release¹, Seraphina Therapeutics announced that Inc. had named the company the fifth fastest-growing private consumer product company in the US, ranking 117 on its list of 5000 American companies. The list recognizes independent, entrepreneurial businesses.

The health and wellness company develops fatty acid supplements, food fortifiers, and nutritional interventions and developed the C15:0 supplement, marketed at fatty15. As the press release explains, the fatty acid was discovered while Seraphina's co-CEO and co-founder Stephanie Venn-Watson, DVM, MPH, served as a veterinary epidemiologist for the U.S. Navy, working with aging dolphins. Her team discovered that C15:0 (pentadecanoic acid) was the strongest indicator of health in the aging dolphins, an outcome also found in humans.

"We are incredibly grateful to the Navy and the Navy's dolphins for helping us unlock a core evolutionary tool of longevity that truly supports long-term wellness and healthy aging at all stages of life," stated Dr. Venn-Watson, in the press release. "Our discovery of C15:0 as an essential nutrient is proof that there are still simple and wholly meaningful discoveries to be made that can improve the health of all."

The healthy aging supplement is intended to help strengthen cell membranes against breakdown related to aging², as described in a 2024 study published in the journal Metabolites. Additionally, another 2024 study³, published in The Journal of Nutrition, found that C15:0 may have a beneficial impact on metabolic health, with participants demonstrating a 1.88 μg/mL greater mean increase in circulating C:15:0 than the placebo group after 12 weeks. A 2022 study⁴ found that C15:0 is metabolized into an endocannabinoid called pentadecanoylcarnitine (PDC), which demonstrated dose-dependent anti-inflammatory activities along cell systems associated with treating cardiovascular, immune, neoplastic, pulmonary, and skin diseases.

In March 2025, Nutritional Outlook sat down with Dr. Venn-Watson to discuss⁵ her book The Longevity Nutrient⁶, in which she discusses her initial research and the subsequent scientific studies over the past decade. The book also notes findings that demonstrate C:15 nutritional deficiencies resulting in Cellular Fragility Syndrome.

Seraphina Therapeutics was named Best of the Industry Ingredient Supplier⁷ in 2021 by Nutritional Outlook. The ingredient had also been regarded as Generally Recognized as Safe (GRAS) for use in food and beverages⁸ in 2021.

References

1. Seraphina Therapeutics. Groundbreaking Longevity Supplement, Fatty15, Catapults Seraphina Therapeutics to Inc. 5000's Fifth Fasting-Growing Consumer Products Company in America https://www.prnewswire.com/news-releases/groundbreaking-longevity-supplement-fatty15-catapults-seraphina-therapeutics-to-inc-5000s-fifth-fasting-growing-consumer-products-company-in-america-302526098.html (accessed 2025-08-15).
2. Krawiec, S. Recent review states that pentadecanoic acid may support cellular stability for better longevity https://www.nutritionaloutlook.com/view/recent-review-states-that-pentadecanoic-acid-may-support-cellular-stability-for-better-longevity (accessed 2025-08-15).
3. Krawiec, S. Recent study found that pentadecanoic acid may have beneficial impact on metabolic health https://www.nutritionaloutlook.com/view/recent-study-found-that-pentadecanoic-acid-may-have-beneficial-impact-on-metabolic-health (accessed 2025-08-15).
4. Krawiec, S. New study finds pentadecanoic acid metabolizes into full-acting endogenous cannabinoid called pentadecanoylcarnitine https://www.nutritionaloutlook.com/view/new-study-finds-pentadecanoic-acid-metabolizes-into-full-acting-endogenous-cannabinoid-called-pentadecanoylcarnitine (accessed 2025-08-15).
5. Krawiec, S. Nutritional Outlook interviews Stephanie Venn-Watson on her new book, The Longevity Nutrient, Part 1 https://www.nutritionaloutlook.com/view/nutritional-outlook-interviews-stephanie-venn-watson-on-her-new-book-the-longevity-nutrient-part-1 (accessed 2025-08-15).
6. Krawiec, S. New book makes the case for a new essential fatty acid that protects health and promotes longevity https://www.nutritionaloutlook.com/view/new-book-makes-the-case-for-a-new-essential-fatty-acid-that-protects-health-and-promotes-longevity (accessed 2025-08-15).
7. Grebow, J. Nutritional Outlook’s 2021 Best of the Industry Award Winners https://www.nutritionaloutlook.com/view/nutritional-outlook-s-2021-best-of-the-industry-award-winners (accessed 2025-08-15).
8. Grebow, J. Recently discovered fatty acid ingredient, FA15, gets GRAS nod for food use https://www.nutritionaloutlook.com/view/recently-discovered-fatty-acid-ingredient-fa15-gets-gras-nod-for-food-use (accessed 2025-08-15).