The 1 Hour Fast Flush Capsules work as a flushing agent to cleanse your body of all unwanted drug metabolites allowing you to pass a urine drug test. After taking the 1 Hour Fast Flush Capsules, individuals should be prepared to urinate frequently. This detoxifying product temporarily speeds up the urinary process during which the body breaks the drug metabolites down. Capsules remain effective from 1 hour after consumption up to 5 hours depending on metabolism and level of toxins in your system. Once the effects of the capsules have worn off the individual will continue to test positive for drug metabolites.