Chlorella Extract is a type of algae that is grown in fresh water, typically in Japan and Taiwan. It aids in the removal of toxins and metals from your body, and is said to boost your immune system and may prevent cancer. Chlorella extract aids in the removal of toxins and metals from your body. It also boosts your immune system, and may prevent cancer. Chlorella is also rich in antioxidants, Vitamins A, C, E, beta carotene, and chlorophyll. Chlorella is also said to decrease the side effects of chemotherapy.