Find Baby Formula And Supplements at Target.com! Up & up Sensitivity Infant Formula is a complete, milk based formula with 95% less lactose than standard milk based formulas, designed for babies experiencing fussiness or gas. Up & up Sensitivity is fortified with iron and contains all the vitamins, minerals and nutrients required for baby's first year. Up & up Sensitivity infant formula is nutritionally comparable to Similac Sensitive infant formula. Now up & up infant formulas are easier than ever to prepare! Our new Mom-friendly SmarTub™ formula container has an easy-open zip top foil opening, a scoop holder, and a built in scoop leveler to make.