Infant formula, Similac Isomil Soy, ready-to-feed
Common food
Photo: Wikipedia
Similac Isomil Soy is a ready-to-feed, plant-based infant formula designed as a gentle alternative for babies with cow's milk protein sensitivity or lactose intolerance. It has a smooth, slightly sweet, milky texture and flavor, closely mimicking traditional formula. Nutritionally, it provides a balanced, calorie-dense profile with soy protein isolate as the primary protein source.
Calorie split: 10% protein · 41% carbs · 49% fat
↓ Full nutrition💚 Why it's loved
Parents love it for the peace of mind it offers when their baby struggles with standard formulas, providing a reliable and nutritionally complete option. The ready-to-feed format is a lifesaver for nighttime feeds or on-the-go convenience.
⚠️ Watch-outs & how to enjoy it better
Some infants may have a soy allergy or sensitivity, making this formula unsuitable. The added sugars (6.65g per 100g) are a consideration for long-term dietary habits. Always consult a pediatrician before use, and for older infants, consider pairing with solid foods to diversify nutrient sources.
Key benefits
- Hypoallergenic alternative for cow's milk protein allergy or lactose intolerance
- Provides complete nutrition with DHA, lutein, and vitamin E for brain and eye development
- Ready-to-feed convenience requires no mixing, reducing preparation errors
- Soy-based protein is easy to digest for sensitive tummies
- Fortified with iron to support healthy growth and development
🍽️ Popular dishes
🌍 Where it's eaten
💡 Did you know?
Soy-based formulas like Isomil were first developed in the 1920s, making them one of the earliest alternatives to cow's milk-based infant nutrition.
Full nutrition (USDA data · scales with serving)
| Water | 87.7 g |
| Energy | 65.0 kcal |
| Protein | 1.6 g |
| Total lipid (fat) | 3.5 g |
| Carbohydrate, by difference | 6.7 g |
| Fiber, total dietary | 0.00 g |
| Total Sugars | 6.7 g |
| Calcium, Ca | 68.0 mg |
| Iron, Fe | 1.2 mg |
| Magnesium, Mg | 5.0 mg |
| Phosphorus, P | 48.0 mg |
| Potassium, K | 70.0 mg |
| Sodium, Na | 28.0 mg |
| Zinc, Zn | 0.48 mg |
| Copper, Cu | 0.05 mg |
| Selenium, Se | 1.4 ug |
| Vitamin C, total ascorbic acid | 5.8 mg |
| Thiamin | 0.04 mg |
| Riboflavin | 0.06 mg |
| Niacin | 0.87 mg |
| Vitamin B-6 | 0.04 mg |
| Folate, total | 10.0 ug |
| Folic acid | 10.0 ug |
| Folate, food | 0.00 ug |
| Folate, DFE | 16.0 ug |
| Choline, total | 15.1 mg |
| Vitamin B-12 | 0.29 ug |
| Vitamin B-12, added | 0.29 ug |
| Vitamin A, RAE | 58.0 ug |
| Retinol | 58.0 ug |
| Carotene, beta | 0.00 ug |
| Carotene, alpha | 0.00 ug |
| Cryptoxanthin, beta | 0.00 ug |
| Lycopene | 0.00 ug |
| Lutein + zeaxanthin | 0.00 ug |
| Vitamin E (alpha-tocopherol) | 0.64 mg |
| Vitamin E, added | 0.64 mg |
| Vitamin D (D2 + D3) | 1.0 ug |
| Vitamin K (phylloquinone) | 7.1 ug |
| Alcohol, ethyl | 0.00 g |
| Caffeine | 0.00 mg |
| Theobromine | 0.00 mg |
Fat & fatty acid profile (per 100g)
| Fatty acids, total saturated | 1.2 g |
| SFA 4:0 | 0.00 g |
| SFA 6:0 | 0.01 g |
| SFA 8:0 | 0.09 g |
| SFA 10:0 | 0.06 g |
| SFA 12:0 | 0.45 g |
| SFA 14:0 | 0.17 g |
| SFA 16:0 | 0.26 g |
| SFA 18:0 | 0.12 g |
| Fatty acids, total monounsaturated | 1.4 g |
| MUFA 16:1 | 0.00 g |
| MUFA 18:1 | 1.3 g |
| MUFA 20:1 | 0.01 g |
| MUFA 22:1 | 0.00 g |
| Fatty acids, total polyunsaturated | 0.83 g |
| PUFA 18:2 | 0.74 g |
| PUFA 18:3 | 0.09 g |
| PUFA 18:4 | 0.00 g |
| PUFA 20:4 | 0.02 g |
| PUFA 20:5 n-3 (EPA) | 0.00 g |
| PUFA 22:5 n-3 (DPA) | 0.00 g |
| PUFA 22:6 n-3 (DHA) | 0.01 g |
| Cholesterol | 0.00 mg |
FAQ
Is Similac Isomil Soy formula suitable for newborns?
Yes, it is a nutritionally complete formula designed for infants from birth onwards, especially those with cow's milk protein allergy or lactose intolerance, under pediatric guidance.
Does this formula contain lactose?
No, Similac Isomil Soy is lactose-free, using corn syrup solids and sucrose as carbohydrate sources, making it suitable for lactose-intolerant infants.
Can I use this formula for a baby without any allergies?
While it is nutritionally complete, standard cow's milk-based formulas are typically the first choice unless there's a specific reason to avoid them. Always consult your pediatrician.
Nutrient density (calculated · NRF9.3)
Nutrient Rich Foods index: beneficial nutrients (protein, fiber, vitamins, minerals) minus saturated fat, added sugar & sodium, per 100 kcal.
NRF9.3 index — Fulgoni, Keast & Drewnowski, 2009. Computed from USDA nutrients.
Weight-loss friendliness (composite index)
Energy density 0.65 kcal/g · 10% calories from protein · 0.0 g fiber · 6.7 g sugar per 100 g.
Composite of energy density (Rolls et al., 1999), protein & fiber satiety, minus sugar. A calculated heuristic — ranks satiety-per-calorie, not a clinical measure.
Dietary load (calculated from USDA values)
Potential renal acid load. Positive = acid-forming, negative = alkaline-forming.
Sodium-to-potassium ratio: 0.40 (lower is better — aim for ≤ 1)
Sodium:potassium per WHO potassium guidance. Computed from USDA nutrients.