Glytactin® BUILD 20/20

Glytactin BUILD is the lowest Phe GMP powdered medical food for PKU available!

Glytactin BUILD 20/20 is a versatile glycomacropeptide (GMP) based-protein powdered medical foods for the dietary management of PKU for those on a low phenylalanine diet and are seeking more protein, fewer calories and lower Phe than other GMP-based PKU medical foods.

Contains a complete profile of vitamins and minerals and is neutral in flavor to be taken alone or to build up the protein level of other PKU formulas or low protein food items. View our helpful tips for mixing BUILD.

  • Made with GMPure: The lowest Phe GMP protein-based medical foods for PKU
    • 30-44% less Phe than other GMP PKU formulas learn more
    • Only 1 mg Phe per gram of protein
  • Natural protein boost – GMP plus naturally fermented amino acids*
  • Only 100 calories
  • Only 1g carbohydrates
  • No added sugars or colors
  • No artificial flavoring, coloring, or sweetener
  • Contains DHA to support brain and heart health
  • Contains complete profile of vitamins and minerals
  • Contains probiotics to support digestive health
  • Neutral taste
  • Convenient powder packet to take on-the-go
  • Flexible - add to food, beverages or your PKU formula

Glytactin BUILD 20/20 is for use in the dietary management of phenylketonuria in people ages one year and older. BUILD 20/20 is intended for those ages 1 year and older who are under medical supervision for proven PKU. Protein in prescribed amounts must be supplemented to completely meet phenylalanine requirements. Work with your metabolic clinician to determine the daily protein intake (number of grams) you will use per day. Always use Glytactin BUILD 20/20 as directed by your physician or dietitian.

Glycomacropeptide, calcium lactate, L-arginine, L-leucine, L-tyrosine, soy lecithin, glycine, L-lysine acetate, less than 2% of vitamin A palmitate, thiamin mononitrate, riboflavin, pyridoxine hydrochloride, L-tryptophan, L-histidine, DHA algal oil, inulin, sunflower oil, canola oil, d-calcium pantothenate, niacinamide, phytonadione, menaquinone-7, folic acid, biotin, cyanocobalamin, ascorbic acid, cholecalciferol, dl-alpha-tocopheryl acetate, potassium phosphate, magnesium phosphate, maltodextrin, ferrous fumarate, zinc sulfate, manganese sulfate, copper gluconate, potassium iodide, sodium selenite, sodium molybdate, chromium chloride, potassium chloride, salt, Bacillus coagulans GBI-30 6086. Contains milk and soy.

1 oz (30g) packet per 100g
Protein Equivalent, g 20 67
Calories 100 335
Phenylalanine, mg 20 66.7
Fat, g 1.3 4.2


30 x 1 oz (30g) packets


* Produced by fermentation categorized as a natural process by USDA