Similac Pro-Advance

Why We Like It

Similac Pro-Advance has earned its place as America's most recommended formula through decades of clinical use, consistent quality, and its inclusion of 2'-FL HMO — a breakthrough prebiotic previously found only in breast milk. Its unmatched retail availability is a meaningful practical advantage, especially in supply-uncertain environments.

Pros & Cons

Pros

• Contains 2'-FL human milk oligosaccharide (HMO), a prebiotic found in breast milk that supports immune development
• Available in virtually every grocery store, pharmacy, and online retailer nationwide
• OptiGRO blend of DHA, lutein, and vitamin E supports brain and eye development with a strong clinical evidence base

Cons

• Corn syrup solids appear relatively high in the ingredient list, which some parents prefer to avoid
• Not certified organic, which is a dealbreaker for families prioritizing organic sourcing

Score Breakdown

We ranked 5 infant formulas. Criteria: nutritional profile on top of FDA requirements (not instead of them); carbohydrate and fat sources; reported digestibility and when a pediatrician — not a ranking page — should steer you to a specialty formula; U.S. retail or reputable-channel availability; and cost per prepared ounce rather than per can. Store-brand equivalence follows AAP guidance. We did not invent extra formulas or a lab test set we do not have.