Unflavored, pure & soluble L-Citrulline powder

A Medical Food for the dietary management of MELAS Syndrome, Urea Cycle Disorders, or Nitric Oxide Production disorders. Cytolline® is a pure, soluble, and slightly sweet-tasting L-Citrulline powder.

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Cytolline® is a Medical Food that consists of pure L-Citrulline, a Nitric Oxide precursor. L-Citrulline may increase Nitric Oxide production and, therefore may be used therapeutically in patients with compromised Nitric Oxide synthesis capability. This product has a slightly sweet taste. 

Product Form: Powder

Indications: MELAS Syndrome, Urea Cycle disorders, or Nitric Oxide Production disorders


  • Non-flavored with no added sweeteners.
  • It contains no artificial flavorings or preservatives.
  • It may be consumed orally or via tube feeding.

Scoop Size: 

Grams per scoop Grams per Teaspoon Grams per Tablespoon
Scoop Size (cc) Powder Powder Powder
4 3 3.70 11.09

Reimbursement Code: 57771-0001-16

HCPCS Code: B4155

This GMO-free Medical Food is allergen tested at No-Detectable Limit (NDL) for eggs, dairy, fish, crustacean, soy, gluten, corn, tree nuts, and peanut.

Net Weight: 9.7 oz (275 g)



Directions for Use

Cytolline® is soluble and can be consumed either orally or via tube feeding. The daily intake of this powder is to be determined by your physician or dietitian. It is formulated to be consumed or administered enterally under the supervision of a physician. 

  1. Measure (using the scoop provided or a gram scale) the recommended amount of powder.
  2. For oral consumption, consume powder by either sprinkling on food or into liquids, or taken directly by mouth followed with water.
  3. For tube feeding, add powder in 1 g (one scoop) increments to the formula (room temperature or cold) and stir well. Stir or agitate tube feeding mixture if powder separates from formula during feeding. Formula mixture should be used within 4 hours.


Unopened bottles should be kept in a cool, dry place. Reseal opened bottles and use within three months.


This product is intended only for those under the supervision of a healthcare professional. It is not for the general population of consumers. Not for parenteral use. Not for use as a sole source of nutrition, only for individuals with MELAS syndrome, Urea Cycle disorders, or Nitric Oxide Production disorders.

Additional information

Weight 0.74 lbs
Dimensions 4 × 4 × 4 in

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