NCD2 (1.35 oz. Bottle)With 4 million bottles sold, Natural Cellular Defense (NCD & NCD2), the Original Liquid Zeolite, is the "category creator" for zeolite products used for health and wellness. The benefits of NCD2 include: Supports a healthy immune system.* Helps balance pH levels in the body.* 100 percent natural and non toxic.* Using a proprietary micronization and activation process, NCD2 isn't just a superior product, it is the only zeolite product proven effective.