Soy baby formula is usually the choice when a baby is allergic to cow's milk or has trouble digesting lactose. Some babies are sensitive to the protein in cow's milk and have to avoid it for several months. As always,check with your doctor before switching.

Soy baby formula is also much more expensive than regular baby formula. Two of the most popular Soy baby formulas are Similac Ismoil Soy Formula and Enfamil Soy Formula. Less expensive alternatives include a soy formula from Nestle Good Start.

Similac Soy Isomil Baby Formula 34 oz
Similac Soy Isomil Baby Formula 34 oz
Paypal   US $37.99
 

The American Academy of Pediatrics has found that the sucrose the fiber in soy formulas may help soothe a baby with colic.