Research-context information only. DSIP is a research peptide. Protocols, doses, and reactions reported below come from small published clinical trials and self-reported community sources. This article reports what has been documented, not what should be done. Consult a licensed physician for personal medical decisions.
The buying problem is that DSIP has thin evidence relative to its market presence. Vendor-reported claims often outrun the published data, and the 9-residue sequence is easy to substitute with shorter unmodified peptide fragments.
This guide covers documented per-mg pricing, COA verification, vial size selection, and red flags. For dosing context, see the DSIP dosing guide.
This is not a ranked vendor list — for that, see our Best DSIP Vendors comparison.
Understanding DSIP Pricing
DSIP ships as a lyophilized powder in sealed glass vials. Three factors drive price: vial size, vendor markup, and whether the COA confirms 98%+ HPLC purity at 850 Da.
Current Market Pricing (2026)
Vial Size
Typical Price Range
Price Per mg
Best For
2mg
$15-35
$11-12/mg
Tolerance testing only
5mg
$30-70
$6-14/mg
Standard short trials
10mg
$50-110
$5-11/mg
Standard monthly protocols — best all-around
10mg × 5 (kit)
$220-500
$4.40-10/mg
Extended cycles
The pattern: 10mg vials are the most-cited size for cost efficiency. 2mg vials carry roughly 50% higher per-mg cost than 10mg.
Cost Per Month at Common Doses
Daily Dose
Monthly Mass
Monthly Cost (10mg single)
Monthly Cost (kit)
100 mcg/day
3 mg
$15-33
$13-30
200 mcg/day
6 mg
$30-66
$26-60
300 mcg/day
9 mg
$45-99
$40-90
For current vendor-specific pricing, see our Best DSIP Vendors comparison.
Cheapest single-vial option: Ascension Peptides's 50% off drops the 10mg vial to $37.50 ($3.75/mg effective) — the lowest effective price we track for buying one vial. Get the code →
How to Verify DSIP Quality
DSIP is a 9-residue peptide (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) — straightforward synthesis without unusual amino acids. Verification challenges are sequence integrity (no truncations) and purity from synthesis byproducts.
DSIP reconstituted with bacteriostatic water and refrigerated is documented stable for roughly 28 days in published peptide-stability data. With sterile water (no preservative), the window collapses to ~24 hours.
Practical implication: A 5mg vial at 200mcg/day fits the 28-day window. Higher doses or larger vials require staged reconstitution.
Vial Size by Protocol
Tolerance testing:
A 2mg or 5mg vial is the smallest unit cited
1-3 weeks at standard doses
Standard 200mcg/day pre-bedtime protocol:
5mg vial — 25 days, fits the stability window
The most-cited size in vendor sales data
1-2 vials per month
Extended cycles:
10mg × 5 kit drops cost to $4.40-10/mg
Each vial reconstituted only when needed; lyophilized vials stable 12+ months
Vendor Evaluation Methodology
When comparing DSIP vendors:
Price Competitiveness (40%)
Normalize to cost per milligram. 10mg at $70 ($7/mg) scores higher than 5mg at $50 ($10/mg).
COA & Testing (30%)
Third-party labs (Janoshik, MZ Biolabs, Colmaric)
Recent (within 6 months)
Verifiable task number
Mass spec confirming 850 Da
Reputation (30%)
Community feedback, shipping reliability, customer service, multi-year track record.
Shipping and Storage
Order Arrival
Lyophilized DSIP arrives as a white or off-white powder cake:
Vial integrity — no cracks, intact rubber seal, aluminum cap secure
Powder appearance — solid cake or loose powder, NOT liquid or discolored
Labeling — batch/lot, mg content, "for research use only"
Cold pack — most reputable vendors include cold packs in summer
Storage Guidelines
State
Temperature
Duration
Lyophilized (powder)
Room temp
Days only (shipping)
Lyophilized (powder)
Refrigerated (2-8°C)
12+ months
Lyophilized (powder)
Frozen (-20°C)
24+ months
Reconstituted (BAC water)
Refrigerated (2-8°C)
~28 days
Reconstituted (sterile water)
Refrigerated (2-8°C)
~24 hours
Reconstituted
Frozen
Not generally recommended
Where to Buy
1
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Frequently Asked Questions
Is DSIP legal to buy?
DSIP (delta sleep-inducing peptide) is sold as a research peptide labeled 'not for human consumption.' It is not FDA-approved. Small clinical trials in chronic insomniacs have been published, but no major regulatory pathway exists. Purchasing research peptides is legal in most US jurisdictions.
How much does DSIP cost per month?
Community subcutaneous protocols use 100-300mcg pre-bedtime. Monthly mass at 200mcg/day is 6mg. Research-vendor 5mg vials cost $30-70 and 10mg vials cost $50-110. Monthly cost ranges from $30-100 depending on vial size.
What vial size should I buy?
5mg and 10mg vials are the most-cited sizes. 5mg is sufficient for tolerance testing or shorter trials. 10mg fits most monthly protocols within the 28-day reconstitution window.
What purity should I look for in DSIP?
Third-party HPLC at 98%+ purity, plus mass spec confirming 850 Da. DSIP is a 9-amino-acid peptide (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) — synthesis is straightforward, so 98-99% purity is achievable.
What's the evidence base for DSIP?
DSIP has small trial data — the most-cited is a 1992 study showing improved sleep in chronic insomniacs over 7 days. Sample sizes are small (n<20 in most published trials), and the compound has not progressed to large RCTs. Buyers in this category accept thin evidence.
Can I buy DSIP from a pharmacy?
No. DSIP has never been FDA-approved. Research vendors are the only documented commercial source.
This article is for educational and informational purposes only. It is not medical advice and should not be used to diagnose, treat, or prevent any condition. Consult a licensed healthcare provider before using any peptide.
