Selenium is a mineral that exists freely in nature. It can be found mainly in proteins and nuts. The best selenium is the one that appears in an organic derivative of seleno-l methionine. Solgar's yeast-free selenium is also called seleno-6 and contains seleno-l-methionine, which is 70% more absorbable than any other non-yeast-based form of selenium on the market. Psyllium fiber capsules from Solgar are served in a concentrated dose of 500 mg. Dietary fiber extracted from the shell of the seeds of the plantain plant (psyllium) containing glycosides and mucilage (a gelatinous substance containing amino acids and polysaccharides) and three fibers: cellulose, hemicellulose, and lignin. without preservatives GMP Certified Instructions for use: Two capsules with two glasses of water between meals. Be sure to drink at least one full glass of water with each capsule. Kosher, Parve, under the supervision of KOF-K New Jersey USA 50 capsules