in general, no. JW is far more than a davinyl extract. That being said, DS was the first to get a high % dav. extract onto the market and they deserve credit where it is due. I personally have used 4 JW per day along with 2 Activate per day to add in free test increases. THey are both great products. I personally look at JW as a superior version of the NHA stack by designer in a single product. Start adding in BAM, restore and the final component of the Evolution stack, and......:jaw: