When it comes to Pau D’ Arco, capsules and tablets are not effective. The effectiveness of Pau D’ Arco comes 1st, from the inner bark and not the outer bark (used mostly in tablets and capsules) 2nd, from the proper preparation of the bark. Pau D’ Arco bark must be boiled and extracted to release the volatile oils and esters, the key components that make Maxx Herb Pau D’ Arco and Pau D’ Arco Plus as effective as herbal dietary supplements! Your body’s digestive system is not capable of extracting these volatile oils and esters from capsules or tablets. Consequentially, Pau D’ Arco capsules and tablets are useless and a waste of your money! Our Pau D’ Arco and Pau D’ Arco Plus are in a concentrated liquid form rendering them far superior for maximum effectiveness than any Pau D’ Arco liquids, capsules or tablets on the market.