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Head to head

DSIP against Epitalon

Two peptides sold for sleep with very different data behind them. Epitalon has more human data than its reputation suggests, including a 6 to 8 year observation of 266 elderly people, none of it blinded and almost all from one research lineage; DSIP's human evidence is limited and inconsistent.

Column A

DSIP

Delta Sleep-Inducing Peptide

A naturally occurring peptide studied for sleep, stress resilience, and pain, with limited and inconsistent human evidence.

Column B

Epitalon

Epitalon (Epithalon, pineal tetrapeptide)

A synthetic pineal tetrapeptide with more human data than its reputation suggests, including a 6 to 8 year observation of 266 elderly people and a 12 to 15 year randomized comparison in coronary patients. Almost all of it comes from one research lineage, and none of it was blinded.

Side by side, on the facts we can check

AttributeDSIPEpitalon
CategoryNootropic & CNSAnti-aging
FDA statusNot FDA-approved. PCAC voted against recommending it for compounding (July 2026)Not FDA-approved. PCAC voted 7 to 4 (1 abstention) to recommend for compounding for insomnia (July 24, 2026); awaiting FDA rulemaking
Half-lifeShort (minutes)Short (minutes)
Molecular weight848.9 Da390.3 Da
MechanismProposed to modulate sleep-related neural activity and stress hormone regulation, though its exact receptor targets remain unclear.Epitalon is proposed to act as a gene-regulating signal rather than a receptor ligand. In telomerase-negative human fetal fibroblasts it induced expression of the telomerase catalytic subunit, telomerase activity and telomere elongation, and treated cultures ran to passage 44 against 34 in controls, about ten extra population doublings. A 2025 study from an unrelated laboratory reported the same direction of effect, dose-dependent telomere lengthening through hTERT expression and telomerase activity in normal human cells, with a separate alternative-lengthening pathway seen only in cancer lines. In people the most consistently reported effect is on melatonin: a course of the parent pineal preparation raised night-time melatonin in elderly subjects whose pineal output was low and tended to lower it in those whose output was normal. The step that would connect the two, a four amino acid peptide entering the nucleus and interacting directly with DNA, has been reported only by the originating group and is not settled.
Human studies cited06
Legal status, USNot approved; research use onlyNot approved; research use only
open the DSIP profileopen the Epitalon profile

Frequently asked questions

What is the difference between DSIP and Epitalon?

DSIP: A naturally occurring peptide studied for sleep, stress resilience, and pain, with limited and inconsistent human evidence. Epitalon: A synthetic pineal tetrapeptide with more human data than its reputation suggests, including a 6 to 8 year observation of 266 elderly people and a 12 to 15 year randomized comparison in coronary patients. Almost all of it comes from one research lineage, and none of it was blinded.

Which has stronger research evidence, DSIP or Epitalon?

This database does not grade compounds. It counts what was run in people: 0 of the 3 studies cited on the DSIP profile were human work, against 6 of 13 for Epitalon. Those counts are of our own citation lists and understate any larger literature, and neither is a recommendation.

Are DSIP and Epitalon FDA-approved?

DSIP: Not FDA-approved. PCAC voted against recommending it for compounding (July 2026). Epitalon: Not FDA-approved. PCAC voted 7 to 4 (1 abstention) to recommend for compounding for insomnia (July 24, 2026); awaiting FDA rulemaking.

Related posts

Blog articles that cover DSIP or Epitalon, newest first.

Reviewed Sep 2026. This page sets two published records side by side. It is educational, it is not medical advice, and it contains no dosing protocols or recommendations for personal use.