Name: DSIP
Brand: Lilipeptide
SKU: LILI-dsip
Price: 57.00 USD
Availability: InStock

What is DSIP?

DSIP was identified in 1977 from the venous blood of rabbits induced into slow-wave sleep, giving the peptide its name even though its physiological role has since proven broader than sleep alone. It is a short, well-defined nonapeptide rather than a peptide mixture.

This listing is DSIP from Lilipeptide (China), sold on Stairway to Gray with escrow: your payment is held until the order arrives and only then released to the brand.

How it is understood to work

DSIP is thought to modulate delta-wave sleep architecture and to interact with the hypothalamic-pituitary-adrenal axis, including corticotropin and luteinizing hormone release, and has shown antioxidant and stress-buffering activity in laboratory models. The precise receptor or binding target for DSIP has not been conclusively established, so much of its mechanism remains descriptive rather than fully mapped.

Research status

Research on DSIP spans sleep regulation, circadian biology, stress physiology, and pain-modulation models, largely in animal and in vitro systems dating back several decades. It has not progressed to an approved clinical product, and more recent literature on the peptide is comparatively sparse next to newer research compounds.

This listing: Lilipeptide DSIP

Brand: Lilipeptide
Also sold by: Lab77 Peptides 10mg $50.00 · Imperial Peptides 10mg $36.00 · Uther Peptide 10mg $75.00 · TFC Peptides 10mg $60.00 · Sulan Bio 10mg $90.00 · European Peptide Sciences 10mg $350.00

Lab testing

There is no public lab report for this listing yet. We can ask the brand for the batch COA before you order. Many buyers also split an independent HPLC test with others who bought the same batch.

Request the batch COA · How group testing works

Bought through escrow: the brand is only paid after you confirm delivery. If the parcel never arrives, or an independent test shows the wrong compound or a significant under-fill, open a claim before releasing payment.

Specifications

Compound: DSIP
Also known as: Delta Sleep-Inducing Peptide
Class: Neuropeptide (nonapeptide)
Form: Lyophilized (freeze-dried) powder
Brand: Lilipeptide · China

Handling & storage

Supplied as a lyophilized powder; store unopened vials frozen and protected from light, and keep any reconstituted solution refrigerated, using it within the timeframe set by your study protocol.

Questions

Does DSIP actually induce sleep in every model tested?

Effects on sleep architecture have been reported inconsistently across studies and species, and DSIP’s naming reflects its discovery context more than a universally reproduced effect, so its sleep-related activity should be treated as an active research question rather than an established fact.

What should a COA for DSIP confirm?

Look for HPLC purity and mass-spectrometry confirmation that the sequence matches Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu, since a nine-residue peptide of this size is straightforward to verify by mass alone.

For laboratory research use only. Not for human or veterinary use. Nothing on this page is medical advice.