Also known as: OFQ, orphanin FQ, N/OFQ
Endogenous opioid-like neuropeptide studied for pain modulation, anxiety, and addiction pathways.

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Neuropeptide chemical compound
Nociceptin/orphanin FQ (N/OFQ), a 17-amino acid neuropeptide, is the endogenous ligand for the nociceptin receptor. Nociceptin acts as a potent anti-analgesic, effectively counteracting the effect of pain-relievers; its activation is associated with brain functions such as pain sensation and fear learning.
Nociceptin/orphanin FQ (N/OFQ), a 17-amino acid neuropeptide, is the endogenous ligand for the nociceptin receptor. Nociceptin acts as a potent anti-analgesic, effectively counteracting the effect of pain-relievers; its activation is associated with brain functions such as pain sensation and fear learning.
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.
Nociceptin (also known as OFQ, orphanin FQ) is studied within the cognitive function and neuroprotection research community. Endogenous opioid-like neuropeptide studied for pain modulation, anxiety, and addiction pathways.
Last updated October 28, 2026
Research status: active. Nociceptin 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
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