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Similac® Soy Isomil®

Complete nutrition for sensitive tummies

Fussiness and gas can be a common part of feeding your baby.

Similac Soy Isomil is specially designed to comfort with the gentleness of soy to soothe the tummy.

Soy-based formulas have been clinically shown to help reduce feeding problems. No other soy-based formula has been studied more than Isomil.

Has OptiGRO to support your baby's brain and eye development.

If your baby’s fussiness or gas seems excessive, ask your physician about switching to Similac Soy Isomil.

Soy formulas are not recommended for premature infants with birth weights of less than 1800 g.

Similac Soy Isomil formula product for infants

Available In:

1.45-lb Powder

12.4-oz Powder

1-qt Ready to Feed

NoPalmOil-Video-2 No Palm Oil/Palm Olein Oil

Soy for fussiness and gas

Nutrition Information

Powder / 1.45 lb

Serving size: 100 Cal (prepared as directed)*

Amount per serving

  • Calories:


  • Volume, mL:


  • Protein, g:


  • Fat, g:


  • Carbohydrate, g:


  • Water, g:


  • Linoleic Acid, mg:


Vitamins & Minerals

* Nutrient values are applicable when prepared as directed.

Similac® Soy Isomil®
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Similac Soy Isomil Reviews

Rated 1 out of 5 by from Caused major gas, fussiness and long periods of inconsolable crying. I usually use Gerber Good Start Soy but unfortunately when I went to the store 3 days ago all my usual brand was sold out. However much to my surprise Similac Soy Isomil was not only stocked but also on sale I was fairly excited. My 9 month old daughter has 2 bottom teeth 1 top tooth and the other trying to come in so I assumed that the fussiness was due to teething till she started slapping at the bottle during feeding and pushing it away as well as eating slow and letting a large amount drip out of her mouth and spitting it out blowing raspberries. I was quite shocked because my daughter has always been a good eater even through the previous formula side affects. She hasn't eaten well since she started this formula and she even wakes up in the middle of the night crying with gas which she never has done before.
Date published: 2020-10-28
Rated 5 out of 5 by from The only milk that fixed every single stomach problem!! My son is 5 weeks old and before I could leave the hospital he became constipated from breast milk. After leaving the hospital, I then put him on Enfamil Gentlease. He was so gassy, uncomfortable and constipated. He would cry for hours. Then I tried Enfamil Reguline for his constipation which made his gassiness even worse! So I figured I should try the hypoallergenic formula called Nutramigen and he started throwing up everything he was eating. The Wic office suggested me to try Similac Soy. I was hesitant at first because I read that babies don’t gain weight as well but it worked. It instantly fixed every problem. No more gassiness and no more crying for hours. No more crying from being super constipated. His bowels move very easily. I am so thankful this formula was recommended to me.
Date published: 2020-10-13
Rated 5 out of 5 by from Small ready made bottles Order the small ready made bottles straight from Abbott’s website
Date published: 2020-06-16
Rated 4 out of 5 by from Great Product This has really helped our baby! Our only wish is that it came in the 8 oz. ready made bottle packs like some of the other products! We travel a good bit and once you open the big bottle you still need a place to store it and therefore also needing a way to warm it...very inconvenient. =(
Date published: 2020-06-15
Rated 4 out of 5 by from please make 2oz bottles!!! I have twins and we are now on Isomil. I wish they made the 2oz bottles ready to feed in bulk!!! PLEASEEEEEE!!!
Date published: 2020-02-25
Rated 5 out of 5 by from Galactosemia My little one has a rare metabolic disorder called Galactosemia. He can not break down galactose or lactose in milk no dairy or breast milk. We had the option of an Alimentum formula or Similac and given the extreme price difference we stayed with Similac as the NICU gave him. We LOVES it and is growing so well. Who says you need dairy to grow big and strong? The amount of calcium in this formula gives us a great peace of mind. We're very grateful for similac isomil soy.
Date published: 2020-01-29
Rated 5 out of 5 by from Ready to Feed I agree with another post I saw! It would be nice to have the ability to buy the 2oz bottles in bulk. Our 4 week loved the ready to drink isomil soy in the hospital but since we came home and switched to powder he spits it up
Date published: 2020-01-07
Rated 4 out of 5 by from Worked for my little guy We went through almost every other formula before finding this one! Within a day my baby was happier and spitting up less. Just wish it wasn’t so expensive, my bank account is hurting a little. But we will do anything for a happy and healthy baby!! Would recommend to anyone having issues on other formulas.
Date published: 2020-01-06
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