Colosan is a blend of various oxides of magnesium designed to gently release oxygen in the digestive tract for the purpose of cleansing it. Colosan comes in powder form and should always be mixed with liquid before taking it. This drink produces oxygen in the intestinal tract, which eliminates all old fecal material, parasites, and mucus. This is not a laxative. A laxative is similar to vacuuming your carpet (intestinal walls), whereas using Colosan is more like steam cleaning them.