Pantesin ® Pantethine from Swanson is a food supplement in capsules suitable for use as a supplement in the daily diet of adults. The formula contains a metabolite of pantothenic acid (vitamin B5) - pantethine with high bioavailability. What is pantethine? Pantethine is a chemical compound produced from pantothenic acid by the addition of cysteamine. It contains a disulfide bridge in its chain. The metabolic activity of pantethine is due to its role in the formation of coenzyme A (CoA), a cofactor required for the metabolism of lipids, carbohydrates and proteins. It works at the cellular level. Each Swanson Pantesin ® Pantethine gelatin capsule contains 300 mg of patented pantethine with high bioavailability. The easy-to-swallow capsules are enclosed in a plastic package with a twist cap. 60 capsules will last up to two months of daily use.