DSIP (Delta Sleep-Inducing Peptide)

Published · Researched 2026-09-21

Overview

DSIP (Delta Sleep-Inducing Peptide) is a 9-amino-acid neuropeptide first isolated in 1977 (discovered 1974 by Schoeneberger and Monnier) from the blood of sleeping rabbits. It is a pure research chemical — sold by grey-market peptide vendors as lyophilized powder in 5 mg, 10 mg, and 15 mg vials, labeled "research use only." It has no human-use approval anywhere. In the 2026 peptide community it occupies a niche-but-real slot as the dedicated "sleep peptide," discussed for deep-slow-wave sleep, circadian reset, and (in older clinical literature) withdrawal and chronic-pain contexts. Expectations in the community are polarized: enthusiasts report dramatic sleep fixes, skeptics cite placebo-controlled trials showing no benefit over placebo.

Social standing

Threads: The strongest platform for DSIP in this research. On April 22, 2026, verified account @chrissssjohnson posted a personal-experience thread about DSIP fixing a sleep schedule broken for 14 years (since returning from Iraq) — "14 years of needing sleeping pills… Now, I get sleepy naturally around 9/10 and wake up well rested around 5-6 am" — which drew 114 likes and 12 replies, the highest-engagement DSIP post found. A commenter on that thread reported similar results ("sleep schedule back on track… no more pills or melatonin"), with use described as occasional rather than daily. The same author posted a follow-up directing people to read DSIP studies on PubMed themselves. Separately, @nootbro posted a June 2026 "peptide cheatsheet" listing "DSIP = sleep" alongside PT-141, BPC-157, and others (77 likes, 11 reposts), and the account Laser Donkey posted an August 2026 DSIP explainer ("discovered in 1977 from the blood of rabbits in deep sleep… works with your natural sleep architecture") with modest engagement. DSIP is Threads' de facto sleep-peptide reference point.

Facebook Groups: Zero hits. Searches for "DSIP" in "Peptides - information. Education. and sharing" (1,000 members) returned no posts on 2026-09-20. Facebook Marketplace: zero listings for "DSIP peptide."

Instagram: No owner posts surfaced in this research. Instagram appears only indirectly (Threads accounts mirror there). Suspected-sponsored flag: none observed for DSIP specifically.

Web forums (independent, non-Meta): The clearest mixed-verdict record:

• anabolicsteroidforums.com (DSIP thread): one user vouched strongly ("it does create sleepiness, and then deep sleep occurs… I let my girlfriend try it too and she reported being extremely well rested"); others reported no effect or poor value. Community-reported doses ranged ~50–300 mcg; seller advice cited as 100–300 mcg, max 3×/week.
• professionamuscle.com (DSIP thread): "I've used it and it did nothing for me"; "didn't really do much for me either. Not worth the price"; and the summary verdict "there seems to be no grey line, it either sucks or it's great."
• muscleandbrawn.com guide (updated ~Feb 2026) summarizing Reddit reports: DSIP "works but if you take it too often… it can also cause insomnia without it"; higher doses caused grogginess lasting into the next day (one report of two days of grogginess after an accidental high dose); suggested timing 1–3 hours before sleep; mild headaches as the only commonly reported side effect.

Viral moments: None. No DSIP post broke out of the peptide niche.

Recurring praise: Deeper-feeling sleep and circadian normalization for people who respond; described as natural-feeling sleepiness rather than sedation; occasional-use (not daily) sufficiency; affordable relative to other peptides. Recurring complaints: Highly variable — many report no effect at all; next-day grogginess at high doses; paradoxical insomnia with too-frequent use; limited long-term safety data; the Matt Walker Podcast (#105) presents DSIP as a cautionary tale, noting rigorous placebo-controlled human trials "showed no significant clinical benefit over a placebo."

Social validation

Tier 3 — flagged weak, but the strongest Tier 3 in this track. By the letter of the tiers it is single-platform (Threads) since Facebook Groups yielded nothing and no Instagram owner content was found. However, it is backed by genuine engagement (verified-account experience posts with active comment sections) and by independent forum evidence (anabolicsteroidforums, Professional Muscle) plus a mainstream skeptical treatment (Matt Walker Podcast), which keeps it out of "fabricated or purely vendor-driven" territory.

Named sources and what they prove:

• Threads @chrissssjohnson (verified) — proves real personal-experience advocacy for DSIP in 2026 with community engagement (114 likes, 12 replies); also proves the "read the PubMed studies yourself" sentiment.
• Threads commenters (Pedro Garcia, Ryan Griffin, Amado Chpa, others) — prove active newcomer curiosity and at least one independent positive anecdote; comments also show vendor-sourcing questions ("Fountain have that Peptide?"), i.e., clinical vendor interest.
• Threads @nootbro — proves DSIP is the category shorthand for "sleep" in peptide cheatsheets (77 likes, 11 reposts).
• Threads @laserdonkey (Laser Donkey) — proves 2026 explainer content keeps the 1977-discovery story circulating.
• anabolicsteroidforums.com DSIP thread — proves the polarized owner verdict (strong advocates vs. non-responders) and community dosing ranges (~50–300 mcg).
• professionamuscle.com DSIP thread — proves skepticism ("it either sucks or it's great"; literature cited as showing no human sleep-inducing effect).
• muscleandbrawn.com DSIP guide — proves the recurring caution themes (dependence-like insomnia with frequent use; next-day grogginess at high doses; 1–3 h pre-bed timing).
• Matt Walker Podcast #105 — proves a credentialed skeptical voice: placebo-controlled trials showed no significant benefit.

Key specs

Pricing (observed 2026-09-20)

Grey-market research-peptide vendors (research-use-only, no human-use authorization):

• PeptidePub price comparison via Medium (catalog prices checked Aug 10, 2026 — flag as ~6 weeks old): 14 offers across 12 vendors; vial prices $35–$125 (5/10/15 mg); $3.67–$21.60/mg. Lowest per-mg: Double R Labs 15 mg at $54.99 ($3.67/mg); Valor Peptides 10 mg at $44.99 (~$4.50/mg); Atomik Labz 10 mg at $45. Highest: World Wide Peptides 5 mg at $108 ($21.60/mg); MD Innovative Peptides 10 mg at $125.
• Individual vendor pages checked near observation date: Atomik Labz 5 mg $35; Polaris Peptides 5 mg $40 (product page updated ~4 days before observation); Planet Peptide 5 mg $50; Power Peptides $49.99 (vendor-reported 4.8/5 rating — vendor claim, not independently verified); GLP Bio 5 mg $65, 10 mg $110, 25 mg $220 (in stock); peptide-products.com (EU) 5 mg €39, and notes Russia-registered Deltaran (vendor claim, UNVERIFIED clinically).
• Lab-grade: CymitQuimica/Bachem β-Asp5-DSIP analog 5 mg €555 (lab-use, different analog — not comparable to grey-market vials).
• Wellness clinic: ELIXR IV Therapy lists DSIP at $499 (clinic service context, not a vial).
• Facebook Marketplace: Zero listings observed 2026-09-20 (no used/resale signal).

What's included / what's needed

• Included: one sealed vial of lyophilized DSIP powder only (vendors explicitly state reconstitution solution and supplies are not included, e.g., Polaris Peptides: "Only the lyophilized chemical is provided").
• Needed (community-reported): bacteriostatic water or NaCl for reconstitution, insulin syringes, alcohol swabs, refrigeration after reconstitution. Several vendors bundle or promote free bacteriostatic water with spend thresholds (e.g., Power Peptides: free bottle with every $400 spent). These are community/vendor-reported requirements, not recommendations.

Support reality

There is no warranty or meaningful support in the DSIP grey market. Vendors vary in whether they publish lot-specific COAs and third-party purity testing (community treats COA availability as the main quality filter; claims like "99.8% purity" are vendor marketing). No vendor was endorsed by owner consensus in this research — DSIP sourcing discussion was limited to scattered "where to buy" questions. Any purchase is at the buyer's risk with no medical recourse.

Community verdict

DSIP has a genuine but small 2026 footprint centered on Threads, where a verified user's detailed sleep-recovery story drew real engagement, and on bodybuilding forums where opinion splits cleanly between "it either sucks or it's great." The recurring pattern — works for some, nothing for others, grogginess at high doses, rebound insomnia with overuse, and skeptical placebo-trial data from the Matt Walker Podcast — makes it a niche experiment, not a proven sleep solution.

Regulatory & safety status

NOT approved for human use anywhere. DSIP is an unapproved research chemical globally. (A Russian product named Deltaran is claimed by one EU vendor to be registered for stress/alcohol-withdrawal indications — UNVERIFIED beyond that vendor's page; do not treat as equivalent to Western regulatory approval.) VERIFY, do not assume: no FDA, EMA, or other major-regulator approval exists for DSIP as a drug, supplement, or therapy. Community-reported adverse effects are mild (occasional headaches, next-day grogginess at high doses), but long-term safety data is absent.

Image views

Real vendor product photography, all saved to img/ (observation 2026-09-20):

• dsip-hero.jpg — PurePeptides DSIP 5 mg vial, front view.
• dsip-side.jpg — Purity Peptides DSIP 5 mg vial (alternate label style).
• dsip-rear.jpg — Pure Peptides USA DSIP vial with CAS/storage label.
• dsip-top-alt.jpg — ezPeps DSIP vial, alternate vendor branding.
• Views not available: detail, real-owner-in-use, scale, box-accessories. A Peak Peptides Australia DSIP render was found but rejected as synthetic-looking; no social owner photos of DSIP vials were found. None invented.

Not medical advice. This is research documentation only. DSIP is an unapproved research chemical; consult a qualified clinician before any health decisions.

Named sources

• Threads @chrissssjohnson — On April 22, 2026, verified account @chrissssjohnson posted a personal-experience thread about DSIP fixing a sleep schedule broken for 14 years (since returning from Iraq) — "14 years of needing sleeping pills… Now, I get sleepy naturally around 9/10 and wake… (April 22, 2026)
• @nootbro — Separately, @nootbro posted a June 2026 "peptide cheatsheet" listing "DSIP = sleep" alongside PT-141, BPC-157, and others (77 likes, 11 reposts), and the account Laser Donkey posted an August 2026 DSIP explainer ("discovered in 1977 from the blood of rabbits… (June 2026)
• Threads @laserdonkey — Threads @laserdonkey (Laser Donkey) — proves 2026 explainer content keeps the 1977-discovery story circulating. (2026)
• Web forum — *Web forums (independent, non-Meta):** The clearest mixed-verdict record: - anabolicsteroidforums.com (DSIP thread): one user vouched strongly ("it does create sleepiness, and then deep sleep occurs… I let my girlfriend try it too and she reported being…
• DSIP guide — muscleandbrawn.com DSIP guide — proves the recurring caution themes (dependence-like insomnia with frequent use; next-day grogginess at high doses; 1–3 h pre-bed timing).
• Facebook Marketplace — Zero listings observed 2026-09-20 (no used/resale signal). (2026-09-20)
• Medium — - **PeptidePub price comparison via Medium (catalog prices checked Aug 10, 2026 — flag as ~6 weeks old):** 14 offers across 12 vendors; vial prices **$35–$125** (5/10/15 mg);… (Aug 10, 2026)

Source URLs were not recorded for these references.