Anhydrous

A term indicating the absence of water molecules in a compound's crystal structure or composition. "Anhydrous" forms of ingredients (e.g. caffeine anhydrous, citric acid anhydrous, betaine anhydrous) are fully dry, more concentrated per gram than hydrated equivalents, and typically easier to handle in powder blending for supplement manufacturing. Contrast with monohydrate (e.g. citric acid monohydrate, creatine monohydrate), which contains one molecule of water per molecular unit.