l-carnitine side effects fishy odor sweat L-Carnitine: Benefits, Risks, and Its Role in Fitness and Weight Loss Trimethylaminuria (Fish Odor Syndrome or

Curr Med Res Opin 2004;20:1377-84

Human studies have mainly focused on safety, how the body handles the peptide, and metabolic markers such as IGF-1 and glucose levels, but have not shown strong evidence of weight loss

Treatments (Medical & Natural) Most people (but not everyone) with Hashimotos disease develop hypothyroidism, which can drastically impact their quality of life

Last reviewed: June 1, 2026 Last updated: June 1, 2026 Written by: Jay Hastings, CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations