Glytactin RTD Lite — Lowest-Calorie, Ultra-Low-Phenylalanine Ready-to-Drink Solution for PKU

Glytactin RTD Lite is a convenient, ready-to-drink medical food designed for individuals with Phenylketonuria (PKU) aged 1 year and up who are managing very low phenylalanine (Phe) intake. With only 120 calories per serving and just ~15 mg Phe per 15 g protein equivalent, this formula offers superior flexibility and portability for the PKU diet.

Key Features & Benefits

• Ultra-low Phe, high precision: Delivers 15 g protein equivalent while keeping phenylalanine around 15 mg per 8.5 fl oz (≈250 mL) carton — ideal for lower-tolerance PKU regimens.
• Minimal calories & carbs: At ~120 kcal per carton and approximately 8–10 g carbs, this product supports body-weight and metabolic control for those with restricted energy budgets.
• Ready-to-drink convenience: No mixing needed — just shake and enjoy. Ideal for on-the-go use (school, work, outings) or as a convenient part of a PKU management plan.
• Flavor variety: Offered in two easy-to-accept flavors — Coffee Mocha and Vanilla — which helps support compliance and enjoyment in daily use.
• GMP-based protein technology: Uses glycomacropeptide (GMP) with a refined amino acid profile, offering a whole-protein structure rather than solely free-amino-acid formulas — designed to enhance satiety and real-food feel in PKU therapy.

How to Use

• Use only under the supervision of your metabolic dietitian or physician.
• Simply open the 8.5 fl oz (≈250 mL) carton, shake well, and drink. Serve chilled for best flavor.
• The carton is designed to provide 15 g of protein equivalent per serving; the number of cartons needed per day will be determined by your clinician based on your phenylalanine tolerance and overall diet.
• Store unopened cartons at room temperature in a cool, dry place. After opening, follow storage instructions from the label (typically refrigerate if not consumed immediately).

Important Things to Know

• This product is a medical food for the dietary management of PKU. It must be used under medical supervision and within a complete low-Phe diet plan.
• It is not intended as a sole source of nutrition — the rest of your diet (including natural-protein exchanges, fluids, other permitted foods) must be managed by your metabolic care team.
• Because it still contains a small amount of phenylalanine (~15 mg), your dietitian will account for this in your total Phe allowance.
• If you have milk or whey allergy (GMP derived from whey), check with your clinician before use.
• Monitor your metabolic markers and growth (for children) regularly as directed by your specialist.