Vital Peptide 1.5 Cal, Vanilla, 8 Fl oz. Vital Peptide 1.5 Cal is a nutritionally complete, peptide-based formula for the nutritional needs for patients ages 14+ years with malabsorption, maldigestion, and other GI conditions. Complete, Balanced Nutrition for supplemental or sole-source nutrition. For oral or tube feeding. Use under medical supervision. Gluten-free, Kosher and Halal, and suitable for lactose intolerance, but is not for people with galactosemia.