• Phenyl-Free® 2 - Medical food powder for children and adults with phenylketonuria (PKU).

Phenyl-Free® 2

Medical food powder for children and adults with phenylketonuria (PKU).

Last Updated: Monday, October 5, 2015

  • Indication
    • Phenyl-Free 2 is a medical food powder that is free of the essential amino acid phenylalanine for children and adults with phenylketonuria (PKU). It provides all other essential amino acids as well as nonessential amino acids, carbohydrate, fat, essential fatty acids, vitamins and minerals. Phenyl-Free 2 has less fat and fewer total calories than Phenyl-Free® 1. Use under direct and continuing supervision of a doctor.

  • Product Features
      • Phenylalanine-free

      • 22 g protein equivalents/100 g powder

      • Higher level of protein equivalents than found in Phenyl‑Free 1

      • Suitable for someone with lactose intolerance

      • Vanilla scent

      • Can be easily modified with preferred flavor enhancers

      • Mixes easily and stays in suspension well

  • Nutrients*
    • Per 100 grams Powder
      Calories 410
      Protein equivalent, g 22
      Fat, g 8.6
      Linoleic acid, mg 4200
      Linolenic acid, mg 520
      Carbohydrate, g 60
      Per 100 grams Powder
      Vitamins ⁄ Other Nutrients
      Vitamin A, IU 1430
      Vitamin D, IU 290
      Vitamin E, IU 9.8
      Vitamin K, mcg 41
      Thiamin (Vitamin B1), mcg 1220
      Riboflavin (Vitamin B2), mcg 980
      Vitamin B6, mcg 980
      Vitamin B12, mcg 2.4
      Niacin, mcg 22000
      Folic acid (Folacin), mcg 350
      Pantothenic acid, mcg 4900
      Biotin, mcg 49
      Vitamin C (Ascorbic acid), mg 49
      Choline, mg 98
      Inositol, mg 49
      Taurine, mg 49
      Carnitine, mg 49
      Per 100 grams Powder
      Calcium, mg 730
      Phosphorus, mg 730
      Magnesium, mg 163
      Iron, mg 12.2
      Zinc, mg 12.2
      Manganese, mcg 1310
      Copper, mcg 1220
      Iodine, mcg 63
      Selenium, mcg 29
      Sodium, mg 610
      Potassium, mg 1100
      Chloride, mg 860
      Molybdenum, mcg 37
      Chromium, mcg 37

      * Product nutrient values and ingredients are subject to change. Please see product label for current information.

      † Protein is incomplete since it does not contain the essential amino acid phenylalanine.

  • Nutrient Facts
    • Protein Equivalent (% Calories) 22
      Fat (% Calories) 19
      Carbohydrate (% Calories) 59
      Lactose-Free Suitable for someone with lactose intolerance
      Galactose-Free Yes

      † Protein is incomplete since it does not contain the essential amino acid phenylalanine.

  • Product Form
    • Phenyl-Free® 2 is available in powder.

      Item #: 891301
      Description: Powder
      Unit Size: 1 lb can
      Cal./Unit: 1860
      Prod. Yield / Unit (fl oz): Varies
      Case: 6 cans per case
      HCPCS Code: B4162
      Reimbursement Code: 00087-510003

      HCPCS Code

  • Composition
    • Ingredients: Sugar, amino acids (L-glutamine, L-leucine, potassium aspartate, L-lysine hydrochloride, L-tyrosine, L-proline, L-valine, L-isoleucine, L-alanine, L-arginine, L-threonine, L-serine, glycine, L-histidine, L-methionine, L-tryptophan, L-cystine), corn syrup solids, soy oil, modified corn starch, calcium phosphate, sodium citrate, magnesium phosphate, potassium chloride, and less than 1%: sodium phosphate, potassium citrate, choline chloride, ascorbic acid, taurine, inositol, ferrous sulfate, L-carnitine, zinc sulfate, niacinamide, vitamin E acetate, vitamin A palmitate, calcium pantothenate, cupric sulfate, manganese sulfate, vitamin B12, thiamin hydrochloride, vitamin B6 hydrochloride, riboflavin, folic acid, vitamin D3, chromic chloride, sodium molybdate, sodium iodide, sodium selenite, biotin, vitamin K1, ethyl vanillin.

  • Preparation of Feedings
    • Metabolic clinician should consult with patients about the correct amounts of water and powder for consumption. The patient's health depends on carefully following these directions.

      Measure the correct amount of water into a suitable container for mixing. Then add the required amount of Phenyl-Free 2. Mix well until blended. Consume the prepared beverage immediately or cover and refrigerate. Use within 48 hours of preparation. Mix before drinking.

      Throw away prepared unrefrigerated beverage left in cup within 1 hour after consumption begins.

      Powder Storage (cans)

      Store cans at room temperature. After opening can, keep tightly covered, store in a dry area and use contents within 1 month. Do not freeze powder, and avoid excessive heat. Use by date on bottom of can.


      An unpacked level scoop delivers approximately 14.4 g of powder. Store the DRY scoop in this can.


      This product is nutritionally incomplete. Continuing medical supervision and frequent blood tests are required. Care must be taken to provide enough phenylalanine to support growth, using other foods with this amino acid as required.

      Nutritional powders are not sterile.

      WARNING: Not for parenteral (I.V.) use.

  • Product Characteristics
    • Fat

      Fat provides 19% of total calories in Phenyl-Free 2. The fat source is soy oil. Soy oil is a source of the essential omega-6 and omega-3 fatty acids: linoleic acid and alpha-linolenic acid.


      Protein equivalents provide 22% of total calories in Phenyl-Free 2. The product provides the essential amino acids (except phenylalanine) as well as nonessential amino acids (see Amino Acids table). Care must be taken to provide enough phenylalanine from other foods to support growth and tissue maintenance. The higher protein equivalent concentration in Phenyl-Free 2 helps children and adults with PKU meet their protein needs while consuming fewer calories from the product. This, in turn, allows Phenyl-Free 2 users to consume a greater variety of foods in order to meet their phenylalanine and calorie needs.

      Amino Acids

      Essential Amino Acids Per 100 g Powder
      Histidine, mg 550
      Isoleucine, mg 1560
      Leucine, mg 2900
      Lysine, mg 1760
      Methionine, mg 480
      Cystine, mg 330
      Phenylalanine, mg 0
      Tyrosine, mg 2200
      Threonine, mg 1010
      Tryptophan, mg 400
      Valine, mg 1690
      Nonessential Amino Acids Per 100 g Powder
      Arginine, mg 1320
      Alanine, mg 1450
      Aspartic acid, mg 1740
      Glutamic acid, mg 3500
      Glycine, mg 790
      Proline, mg 1740
      Serine, mg 860

      ‡ Added as glutamine.


      Carbohydrate provides 59% of total calories in Phenyl-Free 2. The carbohydrate blend is 51% sucrose (table sugar), 42% corn syrup solids and 7% modified corn starch. The sucrose in the product helps mask the taste of amino acids. Phenyl-Free 2 is suitable for someone with lactose intolerance.

      Vitamins and Minerals

      Vitamin and mineral levels in Phenyl-Free 2 are generally appropriate for older children and adults. Compared to Phenyl-Free 1, Phenyl-Free 2 has higher levels of the B vitamins thiamin, vitamin B12, niacin, folic acid, pantothenic acid and biotin.