Product Overview

DSIP, short for Delta Sleep Inducing Peptide, is a naturally occurring nine amino acid neuropeptide first isolated from rabbit cerebral venous blood in the 1970s. It is one of the older peptides in the research catalog, and it remains a reference compound in sleep and neuroendocrine literature because of how readily it crosses the blood brain barrier for a peptide of its size.

Each NXTSTATE vial contains 10mg of lyophilized DSIP powder, tested by an independent third party laboratory before it reaches inventory. The lab report for this lot is published on this page. Check it before you buy.

Research Background

DSIP research spans sleep architecture models, stress response pathways, and neuroendocrine regulation, including studies examining its relationship with corticotropin and growth hormone signaling. Despite the name it was given on discovery, the current literature treats DSIP as a broad neuromodulator rather than a single purpose compound, and that gap between the name and the research is itself a frequent subject of study.

Researchers often study DSIP alongside other neuropeptides such as Selank and Semax. More on that in our Research Notes.

Product Specifications

• Compound: DSIP (Delta Sleep Inducing Peptide)
• Quantity: 10mg per vial
• Purity: third party HPLC verified, lot report published on this page
• Form: Lyophilized powder
• Appearance: White to off-white powder
• Storage: Store lyophilized vials at -20C. Protect from light.
• Shipping: Ships from the US, typically within 24 hours

Quality Assurance

Every lot of DSIP is tested by an independent third party lab for identity, quantity, and purity by RP-HPLC with UV detection. We publish the actual report, not a badge and not a promise. You can read it on this page before you spend a dollar.

If a company will not show you the lab report before you buy, that tells you something. Ours is right here.

Reconstitution and Handling

DSIP is supplied as a lyophilized powder and is typically reconstituted with bacteriostatic water for laboratory use. Add solvent slowly against the vial wall and allow the powder to dissolve on its own without shaking. Store reconstituted material refrigerated and protected from light. Bacteriostatic water and syringes are available separately.

Why Researchers Study DSIP

DSIP is unusual among neuropeptides for a practical reason: it crosses the blood brain barrier readily despite being a peptide, and peptides as a class usually do not. That single property is why DSIP keeps appearing in central nervous system research decades after its discovery, and why delivery route studies use it as a benchmark.

The other reason is the mismatch between its name and its behavior. DSIP was named for the effect observed at discovery, but subsequent research found activity across stress response and neuroendocrine pathways that the name does not capture at all. Published DSIP literature is indexed on PubMed under delta sleep inducing peptide if you want to read the primary sources yourself.

Storage and Stability

Lyophilized DSIP is stable for extended periods when stored correctly. Keep unopened vials at -20C, protected from light, and let a vial reach room temperature before opening it so condensation does not form on the powder. Once reconstituted, DSIP should be refrigerated at 2C to 8C and kept away from light. Avoid repeated freeze and thaw cycles, which degrade peptides faster than storage temperature alone.

Handle vials gently. Peptides in solution are sensitive to mechanical stress, so swirl rather than shake, and do not vortex the solution.

Compliance and Disclaimers

This product is sold for laboratory and research use only. It is not a drug, supplement, or food, and it is not intended to diagnose, treat, cure, or prevent any disease. It is not for human or veterinary consumption. By purchasing DSIP from NXTSTATE you confirm that you are a qualified researcher or institution and that this material will be handled only in an appropriate laboratory setting by trained personnel.