Metabolites as regulators of insulin sensitivity and metabolism Nature Reviews Molecular Cell Biology PDF) Improvement of insulin resistance via increase of GLUT4 and PPAR in metabolic syndrome induced rats treated with omega 3 fatty acid or l carnitine: ZAYED et al. Acetyl L Carnitine (ALCAR) Supplement for Horses Mad Barn Berberine and L Carnitine: Safety, Benefits and Dosage Guide Bolt Pharmacy There's a reason L carnitine keeps showing up in PCOS research Because PCOS is closely tied to insulin resistance, inflammation, and metabolic dysfunctionand L carnitine plays a role in energy metabolism and fat utilization.