Unfavorable PCAC vote

Emideltide / DSIP

Also known as Delta sleep-inducing peptide, DSIP, Emideltide acetate

LAST VERIFIEDAug 12, 2026Against linked primary sources
PL
WHAT THIS MEANS NOWNo final legal change
FDA REVIEW STATUSCommittee did not favor
HUMAN STUDIESLimited
WHAT COMES NEXTFDA response
FDA scientific review
Meeting announced
03Committee vote
04Final FDA decision
FDA approved?No
FDA-approved indicationNone
Compounding-list statusNot on the final 503A Bulks List; FDA action pending
Advisory-committee statusUnfavorable advisory recommendation — July 2026
Final FDA decisionNo final FDA action identified
WHY IT GETS ATTENTION

DSIP has enduring appeal because sleep is universal and the idea of a sleep-linked peptide is intuitively powerful.

Reality check

FDA found limited and inconsistent clinical evidence, and the committee did not give a favorable recommendation.

AT A GLANCE

What a visitor should know.

PUBLIC INTERESTEmergingHow much attention this peptide is receiving
HUMAN STUDIESLimited human evidenceAnimal and laboratory results are kept separate
EVIDENCE GAPMaterialHow far public interest has moved beyond human evidence
NEW EVIDENCEMonitoringNo post-briefing change in human-evidence classification has been verified in Peplyst's monitored source set.
Technical details: aliases, tracked claims, and data record
MOST RECENT FDA UPDATE

PCAC did not give a favorable recommendation

The committee did not recommend emideltide-related bulk drug substances for inclusion on the 503A Bulks List.

What this tells us

FDA received advice from its expert compounding committee.

What it does not tell us

The compound was not FDA-approved, and the vote alone did not add it to the final 503A Bulks List.

WHAT COMES NEXTFDA response

FDA may adopt, reject, or otherwise respond to the committee recommendation.

Read the FDA source
REGULATORY HISTORY

How the FDA record developed.

This timeline separates early nominations and scientific reviews from committee votes and final FDA decisions.

July 24, 2026
PCAC vote

PCAC did not give a favorable recommendation

The committee did not recommend emideltide-related bulk drug substances for inclusion on the 503A Bulks List.

Read the source ↗
May 2026
FDA review

FDA published its scientific briefing

FDA released its evaluation of Emideltide / DSIP-related bulk drug substances for the committee meeting.

Read the source ↗
2015 and 2018
Compounding nominations

Emideltide entered FDA's 503A nomination record

Two organizations nominated emideltide-related substances. The nominations were later withdrawn, and FDA continued the evaluation on its own initiative.

Read the source ↗
STUDIES AND EVIDENCE

What has actually been studied?

Human studies appear on the left. Animal, cell, and laboratory studies appear on the right because they cannot establish that a treatment works in people.

H
Human evidenceStudies or observations involving people
FDA evidence review

FDA found limited and inconsistent clinical evidence and major safety and characterization uncertainty.

Read the FDA review
Small double-blind insomnia study (1992)

Sixteen people with chronic insomnia received intravenous DSIP or placebo. Some sleep measures favored DSIP, but the study was very small and does not establish a routine clinical benefit.

Read the study on PubMed
P
Preclinical evidenceAnimal, cell, or laboratory research
Laboratory and animal literature

Preclinical findings were reviewed separately and do not establish clinical benefit in people.

Read the FDA review
SAFETY & UNCERTAINTY

Important unknowns.

  • Human safety information is limited for the proposed routes and uses.
  • FDA identified uncertainty around active-ingredient characterization, peptide-related impurities, or aggregation.
  • Limited evidence of harm should not be interpreted as evidence of safety.

These are evidence and regulatory uncertainties, not an individualized assessment of whether a treatment is appropriate.

SOURCE DOCUMENTS

Read the original sources.