From the Manufacturer:
Chlorella is a single-cell, freshwater algae that contains a large amount of proteins and amino acids that not only help detoxify... but assist in boosting the immune system.
Chlorella gets its name from the amount of chlorophyll it possesses. Chlorophyll has been shown to be one of the most effective ways to cleanse the bowels and other elimination systems, such as your liver and blood. In fact, Chlorella contains more chlorophyll per gram than any other plant.
Research indicates that chlorella is greatly beneficial in relieving high levels of DDT, PCB, mercury, cadmium and lead in the body. Chlorella also contains the powerful digestive enzymes chlorophyllase and pepsin…these assist in increasing good intestinal bacteria, eliminating bad breath and decreasing the instances of constipation.