HerbalFactors® Milk Thistle Phytosome by Natural Factors $30.79 90 Capsules - $30.79 Size 90 Capsules 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Milk Thistle Phytosome is the result of a unique, patented process that binds milk thistle and key actives to phosphatidylcholine (from non-GMO soy lecithin) resulting in superior bioavailability.