15x Standardized Extract is our highest quality and most popular Kratom thus far. It is the only grade on the market today that is strong enough to be active at approximately 1 gram. In addition to being the strongest grade available, it is standardized, meaning no more guess work, no more weak batches, no more wondering. This new offering will be consistent from batch to batch, ensuring even active alkaloid content with every order. Giving a stronger aroma and relaxing effect.  Buy this now and you won't be disappointed!!