Greetings Aptamil Premium and Aptamil Gold are both high-quality standard infant formulas, but they have distinct differences in their nutritional enhancements. Aptamil Gold typically contains advanced premium ingredients like special Human Milk Oligosaccharides (HMOs), specific prebiotic blends, and higher levels of DHA/ARA to closely mimic breast milk components for digestive and brain development. Aptamil Premium provides the core, essential standard nutrients required for healthy growth but may lack some of these highly specialized prebiotic and fatty acid upgrades found in the Gold version.

Preterm babies usually move from a preterm formula to a regular stage-1 formula once they cross a certain weight and corrected age, and that timing depends on your baby's growth, not the brand. If your baby is feeding well, gaining weight steadily and not vomiting or having loose stools on the current formula, staying on it for now is reasonable.