Pure Encapsulations vitamin supplements is one of the finest healthcare practitioner brands. There are absolutely no hidden fillers or coatings, binders, shellacs, artificial colors, fragrance or excipients in our products that would disrupt or diminish the bioavailability of any of our ingredients. Furthermore, our products are free of wheat, yeast, gluten, corn, sugar, starch, preservatives or hydrogenated oils. Pure Encapsulations manufactures their supplements in a state-of-the-art facility in Sudbury, Massachusetts. Their dedication to cleanliness is obvious from the moment our plant is entered. A large staff is dedicated full-time to the task of ensuring that our plant is impeccable.