Pure Bliss by Similac Infant Formula with Iron is modeled after breast milk and carefully crafted to nourish your baby for the first 12 months of life. Our formula starts with fresh milk from grass-fed cows and has no artificial growth hormones or antibiotics, and it's non-GMO.† Pure Bliss has DHA and ARA, nutrients like those found in breast milk that support brain and eye development. It's thoughtfully crafted nutrition from the brand trusted by moms for over 90 years. Four 24.7-oz can of Pure Bliss by Similac makes approximately 188 (4-fl-oz) bottles. No significant difference has been shown between milk derived from rbST-treated and non-rbST-treated cows. Ingredients not genetically engineered.