Sinapultide
Also known as: KL4 peptide, lucinactant
Synthetic surfactant protein B analogue studied for respiratory distress and lung surfactant replacement.
Quick Reference
Sinapultide - Research Images
PSO vial render · Scientific images from Wikipedia · Tap to enlarge
Overview
Pharmaceutical compound
Lucinactant is a liquid medication used to treat infant respiratory distress syndrome. It is a pulmonary surfactant for infants who lack enough natural surfactant in their lungs. Whereas earlier medicines of the class, such as beractant, calfactant (Infasurf), and poractant (Curosurf), are derived from animals, lucinactant is synthetic. It was approved for use in the United States by the U.S. Food and Drug Administration (FDA) on March 6, 2012.
Mechanism of Action
Lucinactant is a liquid medication used to treat infant respiratory distress syndrome. It is a pulmonary surfactant for infants who lack enough natural surfactant in their lungs. Whereas earlier medicines of the class, such as beractant, calfactant (Infasurf), and poractant (Curosurf), are derived from animals, lucinactant is synthetic. It was approved for use in the United States by the U.S. Food and Drug Administration (FDA) on March 6, 2012.
What Researchers Are Saying
Community Reports - Not Medical Advice
The following is aggregated from public forums, Reddit, and research communities. These are anecdotal reports from researchers only - not verified clinical data and not a recommendation of any kind.
Sinapultide (also known as KL4 peptide, lucinactant) is studied within the immune modulation research community. Synthetic surfactant protein B analogue studied for respiratory distress and lung surfactant replacement.
Last updated October 28, 2026
Research status: limited. Sinapultide appears across immune modulation research forums and academic literature. Researchers note this compound falls in the immune category.
Last updated October 28, 2026
What Do You Think of This Peptide?
Share your opinion or research experience with Sinapultide. Comments are reviewed before appearing.