Our unique expertise Based on over 40 years of research, our team of more than 500 NUTRICIA scientists and experts has helped develop our unique Aptamil® PDF (Post Discharge Formula). Aptamil® PDF is specifically designed for premature infants with increased growth requirements after hospital discharge, starting from a body weight of 1,800 g. Aptamil® PDF - Developed for premature infants with increased growth needs after hospital discharge High protein:energy ratio Essential nutrients Supports catch-up growth Important note: Breastfeeding is the best nutrition for your baby. Please speak to your pediatrician or clinic if you wish to use Aptamil® PDF.