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For laboratory research use only. Not intended for human consumption or medical use.
All products are for laboratory research use only. They are not intended for human consumption or medical use of any kind. Loop Labs does not condone or support the use of peptides outside of controlled scientific research. By purchasing, you confirm that you are a qualified researcher or institution and that you are at least 18 years old.


The Circadian Signal
Delta Sleep-Inducing Peptide (DSIP) is a naturally occurring peptide studied for its association with sleep-related neurophysiological signaling and stress-response pathways. Resea...
Delta Sleep-Inducing Peptide (DSIP) is a naturally occurring peptide studied for its association with sleep-related neurophysiological signaling and stress-response pathways. Research suggests DSIP interacts with neurotransmitter systems involved in circadian rhythm regulation, autonomic balance, and neuroendocrine signaling. It is also being explored in experimental contexts related to oxidative signaling, hormonal communication, and central nervous system regulatory processes.
For research use only. Not approved for human consumption. Sold in lyophilized (powdered) form.
Our DSIP is synthesized to ≥ 99% purity, manufactured in the USA in GMP-compliant labs, and third-party tested for quality, consistency, and transparency.