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Tyrex 1 Amino Acid-Modified Infant Formula With Iron

By Abbott Nutrition

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Item# Description Size Price

Powder 14.1 oz.

Case of 6
$49.148 each



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Tyrex®-1 is an Amino Acid-Modified Infant Formula by Abbott Nutrition that's fortified with iron for infants one year of age and younger with tyrosinemia types I, II, and III. This condition can cause kidney and liver damage due to the inability to metabolize amino acid tyrosinemia. Tyrex 1 Amino Acid-Modified Infant Formula has been specifically designed for infants with this condition and is tyrosine-free. It's also phenylalanine-free in order for greater tolerance to intact protein. The infant formula is fortified with iron for healthy growth and development of baby. It contains 100 grams of L-carnitine and 100 grams of taurine to mimic diets with animal protein. The formula has 6.6 percent of energy from linolenic acid and provides adequate amounts of all nutrients when protocols are followed. Tyrex 1 is not intended as sole source nutrition. For toddlers, children, and adults use Tyrex-2 Amino Acid-Modified Medical Food.

Features, Benefits, Ingredients, Safety Precautions, Preparation, Nutrition Information

Features and Benefits:

  • Specifically Designed for Infants
  • Phenylalanine and Tyrosine-Free
  • Iron-Fortified to Support Growth and Development
  • Added L-Carnitine and Taurine
  • Lactose-free
  • Gluten-Free
  • Halal


  • Manufacturer: Abbott Nutrition
  • Item Number: 51128
  • Weight: 14.1 oz Canister
  • Powder
  • Quantity: Case of 6
  • Flavor: Unflavored
  • Tyrex-1 Nutrition Guide


Powder Unflavored: Corn Syrup Solids, High Oleic Safflower Oil, Coconut Oil, Soy Oil. Less than 2% of the Following: LLeucine, L-Proline, L-Lysine Acetate, Calcium Phosphate, L-Arginine, DATEM, L-Glutamine, L-Valine, LIsoleucine, L-Alanine, Potassium Phosphate, Glycine, L-Asparagine, L-Serine, L-Threonine, Sodium Citrate, Potassium Citrate, Magnesium Chloride, L-Histidine, L-Methionine, Calcium Carbonate, L-Glutamic Acid, Ascorbic Acid, L-Cystine Dihydrochloride, L-Tryptophan, L-Aspartic Acid, Choline Chloride, Taurine, m-Inositol, Ferrous Sulfate, Zinc Sulfate, Ascorbyl Palmitate, L-Carnitine, dl-Alpha-Tocopheryl Acetate, Niacinamide, Mixed Tocopherols, Calcium Pantothenate, Salt, Cupric Sulfate, Thiamine Chloride Hydrochloride, Manganese Sulfate, Vitamin A Palmitate, Riboflavin, Pyridoxine Hydrochloride, Folic Acid, Beta-Carotene, Potassium Iodide, Biotin, Phylloquinone, Sodium Selenate, Chromium Chloride, Sodium Molybdate, Vitamin D3, and Cyanocobalamin.

Safety Precautions:

  • Use under medical supervision and can only be given to infants with tyrosinemia types I, II, or III.
  • Formula must be supplemented with prescribed amounts of protein and fluid to meet the phenylalanine, tyrosine and water requirements.
  • When formula is mixed with water, do not boil contents or use terminal sterilization.
  • Formula is not for sole-source of nutrition.
  • Formula is for oral consumption and not for IV use.
  • Do not microwave formula to warm contents as serious burns can result.
  • Powdered infant formulas are not sterile and should not be fed to premature infants or infants with compromised immune systems unless directed by pediatrician.


Proper hygiene and handling is critical when preparing infant formula. Ask pediatrician if you need to use sterile water or cooled water to prepare formula as well as sterilize the bottle components.

  • Begin with washing hands, surfaces and utensils.
  • Pour designated amount of water into a clean container.
  • Add correlating amount of Tyrex-1 powder.
  • Shake contents for 10-15 seconds or no more than 5 seconds in an electric blender.
  • Pour mixture into clean cup.
  • It's best when serve chilled.
  • Use within one hour or discard.

Approximate Weights for Unpacked, Level U.S. Standard Dry Household Measures for Powder*

Household Measure (US) Weight (g)
1 Tbsp 8
1/4 Cup 30
1/3 Cup 40
1/2 Cup 60
1 Cup 120

* For most accurate results, Tyrex-1 should be weighed on a scale that reads in grams.

Storage and Handling:

  • Once powder has been mixed with water, store unused contents in refrigerator and use within 24 hours
  • Store unopened or opened can at room temperature.
  • Avoid exposing can to extreme temperatures.
  • Use opened can contents within 1 month.

Tyrex-1 Nutrition Information:

Volume100 g Powder
Protein Equivalent SourceL-Amino Acids
Fat SourceHigh Oleic Safflower, Coconut and Soy Oils
Osmolality380 mOsm/kg H2O
Carbohydrate SourceCorn Syrup Solids
Fat14 grams
Protein Equivalent15 grams
Linolenic Acid3500 mg
Linoleic Acid350 mg
Carbohydrates53 grams
Vitamin A1400 IU
Vitamin A420 mcg RE
Vitamin D300 IU
Vitamin D7.5 mcg
Vitamin E15 IU
Vitamin E10.1 mg alpha-TE
Vitamin K50 mcg
Vitamin C50 mg
Vitamin B124.9 mcg
Vitamin B6750 mcg
Thiamin Vitamin B11900 mcg
Folic Acid230 mcg
Niacin10000 mcg
Niacin12.8 mg NE
Biotin65 mcg
Choline80 mg
Pantothenic Acid6900 mcg
Calcium575 mg
Phosphorus400 mg
Magnesium50 mg
Iodine65 mcg
Inositol40 mg
Manganese500 mcg
Iron9 mg
Zinc8 mg
Selenium20 mcg
Chromium11 mcg
Molybdenum12 mcg
Sodium190 mg
Sodium8.3 mEq
Potassium675 mg
Potassium17.3 mEq
Chloride375 mg
Chloride9.2 mEq
Additional Information

Additional Information

Manufacturer Abbott Nutrition
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WARNING: This product may contain chemicals that are known to the State of California to cause cancer, birth defects or other reproductive harm. This product complies with all state and federal safety standards.

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