Cyclinex-1 Amino Acid-Modified Infant Formula

Cyclinex-1 is a specialized medical food from Abbott designed for infants and toddlers with urea cycle disorders or other conditions requiring reduced protein intake. Formulated as an iron-fortified, amino acid-modified powder, it provides the essential amino acids, fat, carbohydrates, vitamins, and minerals a growing child needs while intentionally omitting the nonessential amino acids that a compromised urea cycle cannot process safely.

Parents and dietitians managing conditions like citrullinemia, argininosuccinic aciduria, or ornithine transcarbamylase (OTC) deficiency rely on Cyclinex-1 as a foundation of dietary management from birth. Because it contains no arginine or nonessential amino acids, it must be used under the direction of a metabolic physician or registered dietitian, who will calculate how it combines with prescribed intact protein or other medical foods to meet individual nutritional targets.

We carry the unflavored 14.1-ounce powder can (item 67032), available individually or as a case of six for families and clinics that go through formula steadily and want to keep a reliable supply on hand. The unflavored profile makes it easy to reconstitute to the concentration your care team recommends and to combine with breast milk or standard infant formula when a small, controlled amount of complete protein is permitted.

As your child grows, dietary needs change. Cyclinex-1 is intended for the infant and toddler stage, with the companion product Cyclinex-2 formulated for older children and adults who continue to require urea cycle disorder nutrition management. For branched-chain amino acid disorders such as maple syrup urine disease, see the related metabolic formula BCAD 1.

Always store powder in a cool, dry place, use within the timeframe indicated after opening, and follow your metabolic team's mixing and feeding instructions precisely to keep plasma amino acid levels within safe ranges.