TwoCal HN with FOS, 1000 mL, ready to hang with safety screw connector, vanilla, institutional. 2,000 calories per container. TwoCal HN calorie and protein dense nutrition with FOS is a nutritionally complete, high-calorie liquid food for stressed patients and those requiring low-volume feedings. For tube or oral feeding. For supplemental or sole-source nutrition. Often provided in 2-fl-oz amounts QID with Med Pass programs to assist with weight gain or maintenance. Use under medical supervision.