Buy DSIP in the USA

Every DSIP lot we ship is validated by Janoshik Analytical via HPLC and mass spectrometry. The corresponding Certificate of Analysis is referenced from the product page so researchers can verify the exact batch they received. We do not ship without an in-hand COA.

Orders placed before 2 PM ET ship the same day from our New York research-supply facility. Free shipping is included on orders over $200, and every order includes batch-specific COA documentation.

DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring nonapeptide first isolated in 1974 from brain tissue. It is best known for promoting slow-wave (deep) sleep, but research has also documented broader neuromodulatory effects including stress reduction, cortisol modulation, mood stabilization, and endocrine regulation.

DSIP is a popular research peptide for investigating sleep architecture, HPA-axis balance, and stress-related sleep disruption — without the sedative side-effect profile of traditional sleep drugs. For research use only. Not for human or veterinary consumption.

Researchers should refer to peer-reviewed publications for primary sources on this compound. DSIP is sold strictly for laboratory research use and is not intended for human or veterinary use.

Lyophilized DSIP stores at −20 °C protected from light; reconstituted solution refrigerates at 2–8 °C per laboratory SOP. Reference your lot's COA for compound-specific guidance and see our [Preparation Guide](/learn/preparation-guide) for laboratory handling instructions.

BioInfinity ships DSIP same-day from New York for all orders placed before 2 PM ET, Monday through Friday. We use insulated cold-shipping where indicated. International researchers should review our /shipping page for region-specific guidance.