Aptamil Pepti Syneo 400g. Aptamil Pepti Syneo is a Food for Special Medical Purposes for use under medical supervision.. Aptamil Pepti Syneo is a whey-based extensively hydrolysed formula with galacto- and fructo- oligosaccharides (GOS/FOS) and Bifidobacterium breve M-16V, for the dietary management of cow’s milk allergy.. Aptamil Pepti Syneo is a nutritionally complete hypoallergenic formula, suitable for infants from birth. Suitable as a sole source of nutrition up to 6 months of age, and/or as part of a balanced diet from 6 months.