Ultra Preventive® X, Douglas Laboratories' signature formula includes vitamin K2 for bone and vascular health, bioflavonoids from quercetin, and alpha lipoic acid for healthy blood sugar metabolism. In addition, Ultra Preventive® X contains an organic phytonutrient blend with polyphenols, increased choline content for methylation and liver support, increased lutein and zeaxanthin for vision health, three types of vitamin B12, and preferred mineral forms for bioavailability.