B-Complex Kirkland Vitamin B Complex 500 tablets  There are more than twelve kinds of B vitamins, and nine of are unanimously recognized, all of which are water-soluble vitamins that can only remain in the body for a few hours and must be supplemented every day. The B group is indispensable nutrient for all human tissues, especially suitable for people who often suffer from canker sores, long-term drinking, and rough cracked skin.。