Adverse effect · DSIP (delta sleep-inducing peptide)

How common is safety in humans with DSIP (delta sleep-inducing peptide)?

D
Grade D — no human evidenceNo systematic data · effect size: not measurable · adverse
Short answerNo human evidence. As of 3 September 2026, only no systematic data exist for DSIP (delta sleep-inducing peptide) for safety in humans. The old studies were small and short, and none was designed to characterise safety. There is no modern safety dataset at the doses and routes used on the grey market.

What the studies show

The old studies were small and short, and none was designed to characterise safety. There is no modern safety dataset at the doses and routes used on the grey market.

Animal studies, cell studies, or anecdotes only. This is where almost every viral peptide sits. Promising and proven are different words for a reason.

In context

DSIP is a nine-amino-acid peptide isolated from rabbit brain in the 1970s and named for the sleep pattern it appeared to induce. Unusually for a grey-market sleep peptide, it was tested in people: several small studies in chronic insomnia through the 1980s and 90s. The best-controlled of them found effects that were weak, possibly artefactual, and concluded it was unlikely to be of major therapeutic benefit. Development stopped.

DSIP (delta sleep-inducing peptide) is not approved. Legal status differs by country — see the regulation section or the jurisdiction pages.

Questions

Is DSIP (delta sleep-inducing peptide) proven to cause safety in humans?
No. There is no human evidence for it (No systematic data); the claim rests on animal or cell studies and LYO grades it D.
What studies are behind the grade?
The old studies were small and short, and none was designed to characterise safety. There is no modern safety dataset at the doses and routes used on the grey market.
Is DSIP (delta sleep-inducing peptide) approved for this?
No. DSIP (delta sleep-inducing peptide) is not approved; it is not an approved medicine for any indication in the jurisdictions LYO covers.

Other outcomes for DSIP (delta sleep-inducing peptide)

Written and maintained by LYO Research — how pages are written and checked. Reviewed 3 September 2026. Grades count human evidence only; see how LYO grades. Not medical advice. Correct this page →