DSIP

What is DSIP?

DSIP — delta sleep-inducing peptide — is a nonapeptide first described in 1977, when it was isolated in sleep research from cerebral venous blood. Nearly five decades later it remains a fixture of sleep-architecture, circadian, and stress-response research, even as its receptor biology remains an open question.

Why researchers choose it

DSIP is that rare thing: a compact, historically grounded peptide whose mechanism is still genuinely unresolved — which is precisely what keeps it interesting. Protocols use it in sleep-regulation and stress-axis models where its long literature provides context that newer molecules lack. REPRIME supplies a lyophilized 10 mg vial with reconstitution timing under the researcher's control.

The REPRIME standard

An open research question deserves a closed quality loop. Every batch is independently HPLC-tested and released at ≥99% main-peak purity, with the batch COA published in the Certificates repository. The 10 mg lyophilized vial ships cold-chain in tamper-evident packaging with a unique REP-XXXX-XXXX-X code — one scan at first use confirms it is genuine. For laboratory and research use only; not for human consumption.