Zhou's Chlorella is a superfood that is made from single-celled, green freshwater algae called Chlorella vulgaris. It's an alga rich in several nutrients, including vitamins B12 and C, folic acid, protein, fiber, omega-3s, and minerals such as iron, magnesium, zinc, copper and calcium. Chlorella has been traditionally used to cleanse the body and to support a healthy immune system. Because it's a rich source of nutrients, it's also been used to help fill nutritional gaps in a typical Western diet. Chlorella is made up of antioxidants, which are known for helping to tackle free radicals caused by oxidative stress. Because of its nutrient-dense profile, it is considered a superfood. Zhou's Chlorella Tablets pack a whole lotta nutrients into one tablet to help support your health and wellness goals!