C15: The 'New Vitamin' Nobody Told You About — A Research-Backed 2026 Guide to Pentadecanoic Acid

What is C15 (pentadecanoic acid), is it really the first new essential fatty acid in 90 years, and what does the actual NIH and peer-reviewed research say? A funny but careful 2026 guide with real footnotes from PubMed, the Library of Congress, and the FDA — no hype, no affiliations.

South Florida Trim Clinic provides physician-directed telehealth care from Naples, Florida.