Do peptides help with anxiety disorders?
2 peptides are graded for anxiety disorders on this page. The strongest grade is human observational evidence, for selank and noopept. Each one is weighed against the standard of care below, and the evidence table gives the grade and a note for every peptide.
What is the standard of care for anxiety disorders?
Cognitive behavioral therapy; SSRIs or SNRIs as first line medication; buspirone or pregabalin as alternatives; short term benzodiazepines only in selected cases; screen for depression, substance use, and medical causes such as thyroid disease.
Any peptide below should be judged against this baseline, not against doing nothing. Talk to a licensed provider before replacing or adding to an established treatment.
Which peptides have been studied for anxiety disorders?
Ordered by strength of evidence for this use. Grades follow the methodology; each peptide page lists the individual studies.
| Peptide | Evidence for this use | Note |
|---|---|---|
| Selank | Evidence: Human observational evidence | Open label Russian studies reported anxiety reduction comparable to phenazepam with less sedation; no placebo control; not FDA approved. [1] [2] |
| Noopept | Evidence: Human observational evidence | A Russian comparison with piracetam reported improvement on anxiety measures alongside cognition, without a placebo arm; a dipeptide derived drug, not approved in the US. [5] |
Head-to-head comparisons
Cost and access
Price ranges, lawful channels, and insurance notes for peptides graded here. State rules are in the legal guides by state.
Frequently asked questions
Are there peptides for anxiety?
Selank is the only peptide with clinical studies in anxiety, and they are weak: open label Russian studies reported anxiety reduction comparable to phenazepam with less sedation, but none had a placebo control. Noopept has one Russian comparison without a placebo arm. Neither is FDA approved. Cognitive behavioral therapy and SSRI or SNRI medication remain the first line treatments. [1] [2] [5] [6]
Is selank legal in the US?
There is no lawful US path today. Selank is not an FDA approved drug. FDA no longer lists it in 503A Category 2, but it is not on the 503A bulks list and was not among the peptides the compounding advisory committee recommended in July 2026, so a pharmacy has no federal basis to compound it. [6] [7] [8]
Is any peptide FDA approved for anxiety disorders?
No. None of the peptides graded for anxiety disorders is an FDA approved drug, so any use is outside an approved label and depends on the compounding and research status shown on each peptide page. [6]
Has any peptide been tested in a randomized trial for anxiety disorders?
No. The best evidence for any peptide graded for anxiety disorders is human observational evidence, so none has been shown to work in a randomized human trial for this use. [1] [2] [5]
From the blog
- Selank nasal spray: the evidence, and combining it with semax
What the intranasal selank studies measured, whether the route matters, and what is known about semax and selank nasal spray together: no trial has tested the combination.
- Selank withdrawal: dependence, benzodiazepines, and alcohol
Does selank cause withdrawal? What studies measured on dependence, how it compares with benzodiazepines, the rodent alcohol and opioid withdrawal studies, and the untested alcohol interaction.
- N-acetyl semax and selank amidate: is there any human data?
What N-terminal acetylation and C-terminal amidation are claimed to change in semax and selank, what the lab studies actually found, and why no human study has tested either modified version.
- Semax nasal spray: what the intranasal studies show
Semax was developed in Russia as nasal drops. What the intranasal stroke and imaging studies measured, how nasal and injected data compare, and what the July 2026 PCAC vote means.
Sources
- [1]Efficacy and possible mechanisms of action of a new peptide anxiolytic selank in the therapy of generalized anxiety disorders and neurastheniaPubMed 18454096, 2008
- [2]A comparison of the anxiolytic effect and tolerability of selank and phenazepam in the treatment of anxiety disordersPubMed 25176261, 2014
- [3]Optimization of the treatment of anxiety disorders with selankPubMed 26356395, 2015
- [4]Peptide-based anxiolytics: the molecular aspects of heptapeptide selank biological activityPubMed 30255741, 2018
- [5]Comparative studies of Noopept and piracetam in the treatment of patients with mild cognitive disorders in organic brain diseases of vascular and traumatic originPubMed 19234797, 2009
- [6]Drugs@FDA: FDA-approved drugs databaseFDA
- [7]FDA: Certain bulk drug substances for use in compounding may present significant safety risks (503A and 503B category lists)FDA
- [8]FDA Pharmacy Compounding Advisory Committee meetings (July 2026 meeting on peptide nominations)FDA, 2026