Similac® Soy Isomil®

Complete nutrition for sensitive tummies

Comfort your baby's fussiness and gas with Similac Soy Isomil — specially designed with the gentleness of soy to soothe the tummy.

Some issues, such as fussiness and gas, are a common part of feeding your baby. However, if these common feeding issues continue, ask your physician about switching to Similac Soy Isomil.

Soy-based formulas such as Similac Soy Isomil have been clinically shown to help reduce these feeding problems. And no other soy-based formula has been studied more than Isomil®.

Soy formulas are not recommended for premature infants with birth weights of less than 1800 g.
Similac® Soy Isomil®
tummy care guarantee
Parents know that every tiny tummy is unique.

So if your baby's tummy doesn't agree with a Similac product,
you can try another one FREE*

*Refund of purchase price (excluding taxes and shipping) on select products
only. Limit 2 refunds per household. Must redeem within 30 days of purchasing
alternative formula.

Similac now has OptiGRO

OptiGRO is our unique blend of DHA, Lutein and Vitamin E; these important ingredients are found in breast milk.

  • DHA for brain and eye development

  • Lutein to support eye health

  • Vitamin E an important nutrient found in breast milk to support developing cells

OptiGRO is available in most Similac formulas.

Knowing Means Growing™

Formula types

  • Powder formula
  •  |  Ready To Feed formula
Powder formula
Ready To Feed formula

Powder formula

Just add powder formula to water and mix.
Similac® Soy Isomil® SimplePac

Available in the Similac® SimplePac®

Mom Preferred. Similac SimplePac. And chosen easier to use 3 to 1 over the Enfamil® refill tub.*

*Formula Package Study 2010.

Feeding solutions

It takes time for a baby’s digestive system to mature, so a fussy baby
doesn’t have to mean switching formulas. 

Always talk to your pediatrician about feeding issues before making a switch.
Soy formulas are not recommended for premature infants with birth weights of less than 1800 g.

Before switching, try these suggestions:

  • Use a different bottle or nipple.
  • Use a different burping position.
  • Adjust your body position.
  • Use liquid formula instead of powder.

Have more feeding questions?

Go to Feeding Expert 
Keep learning about your baby's development every week
Get nutrition guidance and feeding help delivered right to your inbox.  
Join Similac® StrongMoms® now.   

Your Similac StrongMoms membership is free, and includes:
  • Expert nutrition guidance for your pregnancy
  • Weekly updates on how your baby is developing and growing
  • Up to $329 in membership benefits
Offers may vary.  
Get up to $329† in great offers. Sign up now >

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