Swanson’s Bioperine Nutrient Absorption Enhancer is a supplement that enhances the action of all other supplements. A standardised extract from black pepper (Piper Nigrum), Bioperine is the only piperine product which has obtained a patent for its ability to increase the bioavailability of nutrients. It is also the only source of piperine which has undergone clinical studies in the U.S. justifying and proving its safety and effectiveness. Those who love animals will appreciate the fact that Bioperine can be used by their pets as well.