When the kidneys become overloaded and impaired, they are unable to filter blood efficiently and a buildup of poisonous waste, such as urea, uric acid, creatinine occurs within the bloodstream. Eventually these toxins diffuse into the colon. Certain probiotic microorganisms, such as those found in Renadyl^™, can utilize these and other toxins as nutrients for growth within the colon. Additionally probiotic microorganisms multiply when a food source is readily available and therefore can create greater diffusion of these uremic toxins from the circulating blood into the bowel as they increase in number. This increased microbial growth is excreted along with the feces (which is normally 50% microbes by weight).

Taking certain scientifically proven probiotics, like those found in Renadyl^™, on a regular basis can help transform the colon into a blood-cleansing agent. By allowing the probiotics to bind to and break down the toxic waste that diffuses in the blood, the colon is able to indirectly remove the toxic waste and help eliminate it as fecal matter. This helps the body stay pure of toxins and helps alleviate strain on damaged kidneys