Best Sensitive Baby Formula: Similac 360 Total Care Sensitive Infant Formula (24-Pack), $66 Amazon For a formula that was designed to be easier on the GI tract, the Similac 360 Total Care ...

For gassy, colicky babies, there’s Earth’s Best Organic Gentle Infant Formula fortified with iron. It’s easy for small ...

Enfamil is another major name in infant nutrition, but not all of its formulas are free from criticism. Enfamil NeuroPro includes corn syrup solids and processed vegetable oils like soy, palm, and ...

More than 90 percent of those crops are grown from genetically altered seeds. The GMO-free Similac Advance will be available at Target by the end of May. ABC News contributed to this report.

For some babies, a soy-based formula can be a stand-in for cow’s milk-based options. But talk to your pediatrician – soy is also a common allergen, so this option is not considered hypoallergenic.

Protein makes up about 7% to 12% of the calories in formula. Common protein sources used in baby formula include ingredients from cow, soy and goat milk.

In turn, 98% of baby formula consumed in the U.S. is produced domestically. When the Abbott factory shut down, the market lacked an international supply to fill the gap.

Similac Isomil Soy "We will continue to monitor availability of infant formula, along with our federal partners, to ensure WIC participants have access to nutrition for their babies," Herring said.