PhytocidalPhytocidal: Supports Immune Function and Microbial Balance Phytocidal is a blend of powerful botanicals formulated to aid in reducing immune burden in those with high spirochete load and provide potent antioxidant support to help fend off microbial challenges. Each two capsule serving of Phytocidal contains Andrographis, cats claw, Japanese knotweed and sweet wormwood, which are botanicals well studied for their strong microbial balancing properties.