Buy DSIP UK
Delta sleep-inducing peptide, a nonapeptide, as a 5mg vial. Research use only.
from £19.991 option
- In stock Ships from the UK
- Same-day dispatch Order before 2pm
- Tracked delivery Free over £75
- Certificate of analysis On request
DSIP is on the shelf at diluent.co.uk, held in British stock rather than ordered in, priced from £19.99 for the 5mg vial. It is supplied as vial. A weekday order placed before 2pm goes out the same day, tracked, boxed with nothing on the outside about the contents.
Shipping from inside the country is what removes the customs step: no clearance, no import charge, nothing sitting at a border. Purity is ≥99% by HPLC on every batch, and the certificate for the lot you are sent is yours on request against the number on the label.
Delivery runs £4.95, free above £75, tracked start to finish. See how ordering works.
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What is DSIP?
Nine residues, Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu, pulled from the cerebral venous blood of rabbits back in 1977. Delta sleep-inducing peptide is what it was called after the circumstances it was found in; the name describes that, not a mechanism anyone has established.
Specification
| Residues | 9 |
|---|---|
| Sequence | Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu |
| First isolated | 1977 |
| Purity | ≥99% by HPLC |
| Vial strength | 5mg |
| Vial state | Lyophilised powder |
| Certificate | On request, against the batch number |
What else contains it?
What has DSIP been studied for?
The record behind DSIP is pre-clinical throughout. Not one of the papers listed below is a human trial. Below is what each paper set out to examine, sorted by the model it ran in:
Reviews of the literature
- Delta sleep-inducing peptide, Review (PMID 11437870)
- Delta-sleep-inducing peptide (DSIP): a review, Review (PMID 6145137)
- Delta sleep-inducing peptide (DSIP): a still unresolved riddle, Review (PMID 16539679)
Each line describes what a paper looked at. None of it reports an effect in a person, and no part of this site tells anyone how to use anything.
Where and how to buy DSIP in the UK
How do you order?
Pick a strength from the table, put it in the basket and check out. There is no account to set up. The confirmation reaches you straight away and the payment details follow by email, because no card is taken on the site.
Why does UK stock matter?
The DSIP you order leaves a warehouse in Britain. That means no customs step, no import charge and no days lost in transit from abroad. Before 2pm on a working day and it is collected that afternoon, tracked, in an outer box that gives nothing away.
What arrives in the box?
| Purity | ≥99%, by HPLC |
|---|---|
| Labelling | Compound, strength, format, purity, research-use statement and a batch number |
| Certificate of analysis | On request, matched to your batch number |
| Delivery | Tracked, UK only. £4.95, free over £75 |
| Returns | 14 days on unopened, sealed items, terms |
Reconstituting DSIP
The vial arrives as a freeze-dried cake. It becomes a solution once bacteriostatic water goes in, and how much you add is what decides the strength of that solution. The quantity in the vial never changes, only the volume it is spread through.
What you see here are concentrations and volumes. Nothing on this site is dosage, protocol or administration guidance, and no number above is one either.
Loaded with 5mg and 2ml to start. Move either control and the numbers move with it. The full reconstitution calculator goes further, into syringe units, which water to pick and how long a mixed vial lasts.
| Vial | + 1ml | + 2ml | + 3ml | + 5ml |
|---|---|---|---|---|
| 5mg | 5 mg/ml | 2.5 mg/ml | 1.67 mg/ml | 1 mg/ml |
Take the 5mg vial: 2ml of bacteriostatic water puts it at 2.5 mg/ml. The sum is the milligrams on the label over the millilitres you put in. Every figure here is a concentration. None of them is a dose, and this site carries no dosage, protocol or administration guidance at all.
How should it be handled?
- Let a refrigerated vial reach room temperature first.
- Wipe the stopper with an alcohol swab every time you go in.
- Aim the water at the glass wall so it runs down, not straight onto the cake.
- Roll it gently between your fingers. Shaking makes foam, and foam is damaged protein.
- Give it a few minutes to go into solution. Done properly it finishes clear.
Storing DSIP
| Sealed vial | Somewhere cool, dry and dark. For anything long term, the freezer. |
|---|---|
| Once reconstituted | Fridge, standing upright, away from light. Never freeze it once mixed. |
How long does it keep?
| Stored as | Keeps for |
|---|---|
| Sealed, frozen at −20 °C | Years. Nothing holds a lyophilised peptide better than this |
| Sealed, refrigerated at 2–8 °C | Months |
| Sealed, at room temperature | Weeks. Fine while it is in the post, not a place to keep it |
| Reconstituted, refrigerated | Think weeks, not months. Four weeks is the number most people work to once bacteriostatic water is in, which is exactly what its preservative is there for |
| Reconstituted, frozen | Best avoided. Ice crystals tear at peptides, and every freeze–thaw round makes it worse |
Treat these as the usual numbers for lyophilised peptides, not a stability result measured on one batch. Cold and dry buys time; moisture, heat, light and being shaken about take it away. Ask and we will send the batch certificate of analysis.
Is DSIP legal in the UK?
We sell DSIP as an unlicensed research compound, for laboratory research use only. There is no UK marketing authorisation behind it, it is not a licensed medicine, and it is not for human use, veterinary use or food.
Nothing of this kind is a controlled drug, and selling it as laboratory material is lawful. Selling or marketing it for people to take is not. That line is the reason you will not find a dose, a protocol, a route, a frequency or a medical claim anywhere on this site, and the reason asking for one by email gets the same answer.
A few molecules in this range also appear inside a licensed medicine sold under a brand name. That authorisation belongs to the finished product it was granted for; it does not follow the molecule anywhere else. Full terms.
DSIP questions
What does DSIP stand for?
It abbreviates delta sleep-inducing peptide.
How long is the peptide?
Nine residues.
Where can I buy DSIP in the UK?
DSIP is available in the UK from diluent.co.uk, from £19.99, a single 5mg size, as vials. British stock on a British courier. Nothing to pay on import, nothing to handle, nothing for an officer to open. That lands at £4.00 the milligram. It turns up as freeze-dried powder, so the concentration is yours to set when you mix it. It also turns up inside 1 other product we sell. Get the order in before 2pm on a weekday and it leaves that day, tracked, plainly packaged. Batches go to a third-party lab and come back at ≥99% by HPLC, and the certificate for yours is there if you ask, see how to order.
How much does DSIP cost?
It starts at £19.99 for the 5mg, £4.00 per mg. Postage runs £4.95, and nothing at all above £75.
How much bacteriostatic water do I add to DSIP?
There is no single right answer, because the volume you choose is what fixes the strength. Take the 5mg vial: 1ml puts it at 5 mg/ml, 2ml at 2.5 mg/ml, 3ml at 1.67 mg/ml. The 5mg in the vial stays 5mg regardless. These are concentrations. They are not doses.
How should DSIP be stored?
Still sealed and dry it will sit for years at −20 °C, months in a fridge at 2–8 °C, weeks at room temperature. Cold and dry is what buys the time. After mixing it goes in the fridge standing up, and four weeks is the figure most work to with bacteriostatic water. Never freeze it once mixed: ice crystals tear peptides apart and each freeze–thaw round does it again.
What purity is your DSIP, and can I see a certificate?
≥99%, measured by HPLC. Quote the batch number on your label and we will send the certificate of analysis for that lot. If you would rather see where current stock sits before you commit, ask and we will tell you.
References
- Delta sleep-inducing peptide. European journal of anaesthesiology, 2001.. PMID 11437870
- Delta-sleep-inducing peptide (DSIP): a review. PMID 6145137
- Delta sleep-inducing peptide (DSIP): a still unresolved riddle. Journal of neurochemistry, 2006.. PMID 16539679
Each one links out so you can read the paper itself.