all of that to say, even though legal red tape prevents serenity kids from marketing their formula as infant formula: the serenity kids A2 “toddler” formula is completely safe to feed to even the youngest of babes — not just toddlers. and it is the ONLY formula I will feed my children if we end up in that situation again. the serenity kids formula contains a macronutrient profile (high-quality proteins, fats, and carbs) and fortifications (HMOs, nucleotides, and prebiotics) that make it more similar to breastmilk than any other formula out there.