Dechra Porus® One Kidney Supplement for CatsDechra Porus One Kidney Supplement for Cats Dechra's Porus One features Renaltec, a selective carbon based absorber of protein byproducts with a large absorption capacity. Cat's energy derives from protein rich food. Protein metabolism leads to a large amount of waste products, which are typically excreted by the kidneys. Porus One binds protein byproducts in the intestines where they are excreted in the feces. This binding process helps to keep the