Dietary Supplement. Crystalline pure. Yeast free. Twinlab Choline & Inositol Caps are easier to swallow and assimilate. Well tolerated by the most highly allergic individuals. No tablet binders, coatings or colorings. No added flavorings, salt, artificial sweeteners, colorings, preservatives or salicylates. Packaged in a glass bottle for maximum stability, quality and freshness. This product is manufactured at our own state of the art facility. twinlab.com.