Where to buy DSIP in Australia

The PEPTALIAS list price on 30 October 2026 is A$89.99 for 10 mg of lyophilised (freeze-dried) DSIP in a 3 mL vial, A$9.00 per milligram. Delivery is express tracked at A$15.00, free once the order reaches A$200.00. Totals below use list prices; checkout confirms the final total.

Three vials clear A$200.00 at list price, the smallest DSIP order that ships free. In-stock orders go out the next business day, Monday to Friday; the shipping page quotes 2 to 5 business days to metro addresses and 3 to 7 to regional.

DSIP stands for delta sleep-inducing peptide. It is a nonapeptide (nine amino acids) with the sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu, CAS 62568-57-4, molecular weight about 848.9. In the 1970s a Swiss group isolated it from the blood of rabbits whose brains were stimulated to induce sleep, and named it after the slow-wave (delta) EEG pattern it produced in other rabbits. It is also called emideltide.

The what is DSIP guide has more on its history and open questions.

PEPTALIAS publishes the manufacturer's analysis for its DSIP as a PDF on the product page. Changsha Duole Bio Co., Ltd issued it as report 024-D81-TSX, with these printed figures.

The packing line reads 1 kg per bag, so the document describes a bulk lot of DSIP. PEPTALIAS sells 10 mg vials today; the report does not say which lot they were filled from and is not a test of each vial. The sequence printed on the report matches the published DSIP sequence. The laboratory report guide walks through each test.

HPLC purity, 99.20 percent, is the main peak's share of what the HPLC method detects. It says how clean the signal is, not how much DSIP the powder holds, and does not on its own confirm the sequence. Peptide content, 86.33 percent, comes from nitrogen analysis (N%) and estimates how much of the powder's mass is peptide. The report separately lists water at 3.5 percent and acetate at 9.37 percent and does not account for the remainder. 10 mg is the labelled DSIP amount; the bulk report does not verify the retail vial's fill mass or DSIP content. None of the three verifies the DSIP mass or identity in your vial; that needs a test on a sample linked to it.

The TGA's page on unapproved peptide products says peptide products are therapeutic goods under the Therapeutic Goods Act 1989, that those not on the ARTG are unapproved, and that unapproved peptide products "have not been assessed by the TGA for safety, quality or effectiveness". It says a "research use only" disclaimer does not make supply lawful and on its own does not change regulatory status, permit importation or remove advertising or supply obligations. It does not name DSIP. The linked TGA guidance does not establish a DSIP-specific ARTG status. The TGA's access pathways page says unapproved therapeutic goods can be legally supplied through the Special Access Scheme, the Authorised Prescriber scheme and clinical trials, and that individuals can import for personal use, not supply, under the Personal Importation Scheme.

For a buyer, the result is that PEPTALIAS sells DSIP for laboratory research, and neither that label nor dispatch from Australian stock settles its regulatory status. This page is not legal advice; read both TGA pages before you decide. The research peptides guide covers what PEPTALIAS supplies.

1. Confirm A$89.99 and stock on the live product page; figures here are from 30 October 2026.
2. Open the supplier PDF and check report number 024-D81-TSX and the re-test date, 9 March 2027.
3. Check the shipping page and the total at checkout; the FAQ says there are no payment-method surcharges and delivery is calculated separately.
4. Read the returns terms: faulty, damaged, incorrect or missing orders get a replacement or full refund.
5. Check what solvent and preparation your laboratory method requires; the DSIP vial contains powder only, and PEPTALIAS sells bacteriostatic water separately.

DSIP is one 10 mg vial in 3 mL glass at A$89.99, A$9.00 per milligram, with two vials at A$194.98 delivered and three at A$269.97 with free delivery. The bulk-lot report clears every specification: 99.20 percent HPLC purity against a 98.0 minimum, 86.33 percent peptide content against 80.0, and water and acetate inside their limits. PEPTALIAS publishes a certificate of analysis for every batch it stocks where one exists and explains how to read them in its lab-report (COA) guide. Returns cover a faulty or incorrect vial.

Three papers set out what is known about DSIP: two experimental papers in rabbits from the 1970s and a 1986 review.

Schoenenberger and Monnier (1978) describe isolating DSIP from the cerebral venous blood of rabbits during sleep-inducing stimulation of the thalamus. They report the sequence, synthesise the peptide and five fragments, and record the EEG (the brain's electrical activity) of 61 rabbits after infusion, double-blind.

Monnier and colleagues (1977) report that synthetic DSIP given to free-moving rabbits increased cortical delta EEG activity and reduced motor activity over 5 hours, which they take as evidence it crosses the blood-brain barrier.

Graf and Kastin (1986) review the DSIP literature to that date. They cover further sleep-inducing effects reported in animals, attempts at therapeutic use such as insomnia, pain and withdrawal, and antibody-based studies of where DSIP-like material occurs, and state that how it works in the body remains to be established.

None of this establishes an effect in humans, and all of it is decades old.

Is DSIP legal to buy in Australia?

The TGA says a "research use only" disclaimer does not make supply lawful or change regulatory status. PEPTALIAS sells DSIP for laboratory research; read both TGA pages, linked in the legal section, before you decide.

Does PEPTALIAS sell DSIP in sizes other than 10 mg?

No. The one size is 10 mg in a 3 mL vial at A$89.99; order two or three vials if your work needs more.

How can I check that the vial holds 10 mg of DSIP?

The published report covers a 1 kg bulk lot, not your vial. Ask for documentation traceable to the lot you are supplied, then ask a laboratory which identity and content methods suit a nonapeptide and get a quote.

Is the DSIP report a certificate of analysis?

It is a manufacturer's analysis of a 1 kg bulk lot, with a report number, dates and results against specifications, which is what sellers usually mean by a certificate of analysis, not an independent third-party test.

Why does the report list acetate?

This DSIP report lists acetate at 9.37 percent, the share of the powder's mass made up by the counter-ion. That, with water at 3.5 percent, is part of why peptide content (86.33 percent) sits below HPLC purity (99.20 percent), a different measure.

1. PEPTALIAS DSIP product page
2. PEPTALIAS DSIP supplier report 024-D81-TSX (PDF)
3. PEPTALIAS shipping
4. PEPTALIAS returns
5. PEPTALIAS FAQ
6. PEPTALIAS lab-report (COA) guide
7. TGA: Understanding your responsibilities when importing, compounding and supplying unapproved peptide products
8. TGA: Supply an unapproved therapeutic good (access pathways)
9. Schoenenberger GA, Monnier M (1978) The delta EEG (sleep)-inducing peptide (DSIP). XI. Amino-acid analysis, sequence, synthesis and activity of the nonapeptide. PubMed 568769
10. Monnier M et al. (1977) Transport of the synthetic peptide DSIP through the blood-brain barrier in rabbit. PubMed 590449
11. Graf MV, Kastin AJ (1986) Delta-sleep-inducing peptide (DSIP): an update. PubMed 3550726