In order to detox effectively and allow your liver to excrete toxins, you need to cut out caffeine. Caffeine is a powerful stimulant and a highly addictive toxin. As well as the obvious sources of coffee and tea, it is found in colas (including diet varieties), energy drinks and chocolate. You may also be surprised to find it in decaf coffee, some herbal teas like green tea, sodas such as Sunkist Orange and root beer, and even some over-the-counter medications.