Neuropeptide S
Also known as: NPS, neuropeptide S precursor
Neuropeptide that promotes arousal and reduces anxiety; researched in fear extinction, PTSD, and sleep-wake cycle models.
Quick Reference
Neuropeptide S - Research Images
PSO vial render · Scientific images from Wikipedia · Tap to enlarge
Overview
Protein-coding gene in the species Homo sapiens
Neuropeptide S (NPS) is a neuropeptide found in human and mammalian brain, mainly produced by neurons in the amygdala and between Barrington's nucleus and the locus coeruleus, although NPS-responsive neurons extend projections into many other brain areas. NPS binds specifically to a G protein-coupled receptor, NPSR. Animal studies show that NPS suppresses anxiety and appetite, induces wakefulness and hyperactivity, and plays a significant role in the extinction of conditioned fear. It has also been shown to significantly enhance dopamine activity in the mesolimbic pathway, and inhibits motility and increases permeability in neurocrine fashion acting through NO in the myenteric plexus in rats and humans.
Mechanism of Action
Neuropeptide S (NPS) is a neuropeptide found in human and mammalian brain, mainly produced by neurons in the amygdala and between Barrington's nucleus and the locus coeruleus, although NPS-responsive neurons extend projections into many other brain areas. NPS binds specifically to a G protein-coupled receptor, NPSR. Animal studies show that NPS suppresses anxiety and appetite, induces wakefulness and hyperactivity, and plays a significant role in the extinction of conditioned fear. It has also been shown to significantly enhance dopamine activity in the mesolimbic pathway, and inhibits motility and increases permeability in neurocrine fashion acting through NO in the myenteric plexus in rats and humans.
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.
Neuropeptide S (also known as NPS, neuropeptide S precursor) is studied within the cognitive function and neuroprotection research community. Neuropeptide that promotes arousal and reduces anxiety; researched in fear extinction, PTSD, and sleep-wake cycle models.
Last updated October 28, 2026
Research status: emerging. Neuropeptide S appears across cognitive function and neuroprotection research forums and academic literature. Researchers note this compound falls in the cognitive category.
Last updated October 28, 2026
What Do You Think of This Peptide?
Share your opinion or research experience with Neuropeptide S. Comments are reviewed before appearing.