What isSelankFDA Status, Evidence and Risks (2026)
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Withdrawn, no review. Off Category 2 since Sept 2024. No FDA advisory panel review found. Not approved by FDA for any use. Not on the 503A bulks list 1,2,3.
Part of The Sommar Peptide Guide. Selank gets sold online as a calm-in-a-nasal-spray. It left FDA's safety-risk list two years ago, and we found no FDA evidence review of it since. Education only.
What selank is
Selank is a synthetic peptide, seven amino acids long: Thr-Lys-Pro-Arg-Pro-Gly-Pro. It is built on tuftsin, a short peptide the body makes. Researchers took tuftsin's four amino acids and added Pro-Gly-Pro to the end to make it last longer in the body 4.
FDA lists it as selank acetate, also called TP-7 1.
You will often read that Russia registered selank as a drug. We could not confirm that with a regulator or a peer-reviewed paper. One 2012 conference abstract by Russian researchers calls it "approved for the treatment of Generalized Anxiety Disorder," but it names no regulator and no date 5. Treat the registration as unverified.
Where FDA stands
- Category 2, until Sept 2024. Selank sat on FDA's list of compounding substances that may present significant safety risks. FDA announced on Sept 20, 2024 that it would remove selank and 4 other peptides after their nominators withdrew them. The removal took effect Sept 27, 2024 3.
- Removal approved nothing. Selank is not approved by FDA for any use and is not on the 503A bulks list, the list a pharmacy needs to compound a substance that is not part of an approved drug 2. More in Are Peptides Legal?
- No panel review found. FDA sent the other 4 peptides from that group toward advisory committee meetings in late 2024. Selank was not on either agenda 3. We found no review of selank by FDA's Pharmacy Compounding Advisory Committee since.
- Not in the HHS policy. On Oct 28, 2026, HHS filed an interim enforcement discretion policy covering six peptides: BPC-157, TB-500, MOTS-c, epitalon, semax and KPV 6. Semax is on that list. Selank is not, and it keeps its prior status, as of Oct 29, 2026.
Compare that with semax, its usual shelf partner, which FDA did review in 2026. Full side by side: Semax vs Selank.
What the research shows
Evidence type: small human studies from Russia, plus animal research. Because FDA never ran a public evidence review of selank, there is no FDA count of studies to quote, as there is for semax and DSIP.
| Study | Who | What it reported | Limits |
|---|---|---|---|
| Syunyakov et al., 2012 conference abstract 5 | 20 adults with generalized anxiety disorder, nasal selank | Anxiety scores fell. 40% improved within 3 days, the rest by day 14 | No control group. Abstract only, no full paper |
| Volkova et al., 2016 4 | 30 rats, one nasal dose | Changes in brain genes tied to GABA signaling | Animal study. Shows a possible mechanism, not a treatment effect |
With no placebo group, the 2012 abstract cannot separate selank from time, expectation or the natural ups and downs of anxiety. The 2016 rat paper says clinical studies found selank's effect "similar to that of tranquilizers at low doses," citing Russian papers from the 1990s 4. We could not open those papers to check who was studied.
Other Russian studies exist, mostly in Russian-language journals. We could not open them for this page, so we report nothing from them.
Known risks and FDA's concerns
FDA's stated concerns, from its Category 2 listing 1:
- Immune reactions. "Compounded drugs containing selank acetate may pose risk for immunogenicity for certain routes of administration." Clumping and impurities in peptides can raise that risk.
- Missing safety data. "FDA lacks important information regarding any safety issues raised by selank acetate administered to humans."
That is the whole FDA file we found. No published FDA review lists side effects, and the human studies we could open are too small to give a reliable list.
Why it's sold online anyway
Selank is easy to find as a nasal spray labeled "research use only" or "not for human consumption." That label is the seller saying the product is not made for people.
What those products skip: a prescriber reviewing your health history, a licensed pharmacy, and quality testing for human use. A spray also depends on its pump and container for dose. When FDA reviewed semax nasal products, it said it "would have strong concerns" without that device information 7. No one has published the same review for selank. More on the difference: Prescription vs Research Peptides.
Other peptides on this shelf: semax, voted for 8 to 5 by FDA's panel, and DSIP, the one it voted down.
Asked a lot.
The sources.
- FDA. Certain Bulk Drug Substances for Use in Compounding that May Present Significant Safety Risks, "Bulk drug substances nominated but withdrawn" table (content current as of Apr 22, 2026). Read it
- FDA. Bulk Drug Substances Used in Compounding Under Section 503A of the FD&C Act (content current as of May 14, 2026). Read it
- Reed Smith. FDA removes certain peptide bulk drug substances from Category 2 of interim 503A bulks list and sets dates for PCAC review (Client Alert 2024-208, Oct 2024). Read it
- Volkova A, Shadrina M, Kolomin T, et al. Selank Administration Affects the Expression of Some Genes Involved in GABAergic Neurotransmission. Front Pharmacol. 2016;7:31. Read it
- Syunyakov T, Teleshova ES, Neznamov GG, Bochkarev VK. P-1114: Rapid and slow response during treatment of generalized anxiety disorder with peptide anxiolytic Selank. European Psychiatry, congress abstract (European Psychiatric Association, 2012). Read it
- HHS. Enforcement Discretion Policy Regarding 503A Compounding Using Certain Peptide Bulk Drug Substances. Docket HHS-OASH-2026-0496, FR Doc 2026-22192 (filed for public inspection Oct 28, 2026; scheduled to publish in the Federal Register Oct 30, 2026). Read it
- FDA. Pharmacy Compounding Advisory Committee briefing document, semax-related bulk drug substances (Jul 2026 meeting). Read it
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