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Reference only · Not medical advice · For adults 18+ · No dosing information is published here
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Sleep

Dsip (Delta Sleep-Inducing Peptide) — reference

A nonapeptide isolated from rabbit brain in the 1970s and named for its association with delta-wave sleep.

Regulatory statusNot FDA-Approved
Published half-lifeNot well characterized in humans; likely short (minutes to under an hour)
Evidence levelNot characterised
CategorySleep

Regulatory status

Not FDA-Approved. Not FDA-approved. Despite the name, its role in sleep regulation was never firmly established.

Reported cautions

⚠ Worth knowing. The naming reflects the original hypothesis rather than a demonstrated effect — subsequent work did not confirm a reliable sleep-inducing action in humans. Very little modern research exists.

Pharmacokinetics

Published figures give an elimination half-life of Not well characterized in humans; likely short (minutes to under an hour). Name is somewhat historical — its actual sleep-inducing mechanism/PK was never firmly established even in the original research.

This figure is tagged Not characterised in our evidence system. No reliable human pharmacokinetic data was found for this compound. We publish that fact rather than a number borrowed from an unreliable source. Any estimated curve here would be fiction, and should be treated as such. You can see the shape this implies between doses in the Half-Life Visualizer, and compare it against every other compound in the Half-Life Data Table. Our sourcing page explains what each tier means.

Remember that an estimated curve is a model built from a population figure, not a measurement of your blood. Individual clearance varies, and for depot injections the figure describes release from the injection site rather than the compound clearing. Half-life explained →

What Peptide Plug does and does not publish

This page carries regulatory status, general context and published pharmacokinetics. It carries no dose, frequency or cycle information — that is a deliberate editorial line, because dosing is a clinical decision rather than reference data. We also do not sell, supply, source or link to vendors for any compound.

Frequently asked

Is Dsip (Delta Sleep-Inducing Peptide) FDA-approved?
Not FDA-Approved. Not FDA-approved. Despite the name, its role in sleep regulation was never firmly established.
What is the half-life of Dsip (Delta Sleep-Inducing Peptide)?
Published figures give Not well characterized in humans; likely short (minutes to under an hour). Name is somewhat historical — its actual sleep-inducing mechanism/PK was never firmly established even in the original research.
How reliable is that half-life figure?
It is tagged “Not characterised” in our system. No reliable human pharmacokinetic data was found for this compound. We publish that fact rather than a number borrowed from an unreliable source. Any estimated curve here would be fiction, and should be treated as such.
What cautions are associated with Dsip (Delta Sleep-Inducing Peptide)?
The naming reflects the original hypothesis rather than a demonstrated effect — subsequent work did not confirm a reliable sleep-inducing action in humans. Very little modern research exists.
Does Peptide Plug publish dosing for Dsip (Delta Sleep-Inducing Peptide)?
No. This library publishes regulatory status, general context and pharmacokinetics only. Dose, frequency and cycle information is deliberately absent from these public pages — those are clinical decisions, not reference data.
Does Peptide Plug sell Dsip (Delta Sleep-Inducing Peptide)?
No. We do not sell, supply, source or link to vendors for any compound, and we have no affiliate arrangements with suppliers. Peptide Plug is a tracking and calculation tool.

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Reference information, not medical advice. This page describes regulatory status and published pharmacokinetics. It does not tell you whether to use this compound, how much to use, how often, or whether it is safe for you. Peptide Plug does not sell, supply or source any compound. Those decisions belong to you and a licensed clinician.

Part of the Peptide Plug research library · How we source our figures