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Selank (Injectable)
Cognitive

Selank (Injectable)

Anxiety & focus

All-in monthly price

$229

No membership fee · this is the full price · free shipping · avg 4-week supply

Medication, provider care, labs & dose adjustments — all in one price.
~28-day supply. Your provider sets your exact dose, so yours may vary — your refill arrives as you finish the last one.
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Optional — add a physician-reviewed at-home blood panel to your plan.

At-home kit (1 device)+$149

Your sex-hormone baseline plus the safety markers that matter on therapy — blood counts, liver and kidney function — from one painless upper-arm device. Matched to your sex (PSA for men; progesterone & FSH for women). No needle, no clinic, physician-reviewed.

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This treatment requires licensed provider review and approval. Treatment is not guaranteed. If prescribed, medication is fulfilled by a licensed U.S. pharmacy where permitted by law. Compounded medications are not FDA-approved or FDA-cleared.

Dr. Gene
Physician Reviewed

Reviewed by Dr. Gene, MD · Board-certified Family Medicine

Every Pepti prescription is reviewed by a licensed U.S. physician before it's dispensed — and only provided if clinically appropriate.

About

Selank (Injectable)

A synthetic peptide analog of tuftsin that modulates GABA and serotonin for calm focus.

Benefits
Anxiety reduction
Mental clarity
Focus enhancement
Mood stabilization
Supply per fill
28-day

About a 4-week supply supply at the standard prescribed dose — your physician confirms exact dosing.

Physician review
24 hrs

A licensed US physician reviews your intake and prescribes when appropriate.

FDA-registered pharmacy
503A

Compounded fresh at a US pharmacy and shipped cold-chain to your door.

Shipping, always
Free

Every order ships free — medication, physician care and refills, one all-in price.

Formulation
Injectable vial5 mL · 2 mg/mL
Selank10 mg

Amounts shown are per unit. Compounded fresh at a US FDA-registered pharmacy.

Quality

Every batch independently tested

Every medication batch dispensed through Pepti is independently tested by a qualified third-party laboratory for applicable quality and safety standards before the pharmacy releases it. Batches are tested to the same standard used by 503B outsourcing facilities.

USP <71>
Sterility

Confirms the finished preparation is free of viable microorganisms.

USP <85>
Bacterial endotoxins

Screens for endotoxins that can cause fever or inflammatory reactions.

Assay
Potency

Verifies the labeled concentration of the active peptide is what is in the vial.

HPLC
Purity

Checks the active peptide against impurities and degradation products.

Mass spectrometry
Identity

Confirms the peptide in the vial is the correct molecule.

USP <791>
pH

Confirms the solution sits within the range specified for injection.

USP <788>
Particulate matter

Checks the finished vial for visible and sub-visible particles.

USP <1207>
Container closure integrity

Confirms the vial seal holds so sterility is maintained through the beyond-use date.

Recent lots
  • Lot 100526-SEL-2

    Tested 2026-10-07 · Biolink Life Sciences Carolinas

    Sterility

    Sterile

    Endotoxin

    <2 EU/mL

    Potency

    99.1%

  • Lot 092826-SEL-2

    Tested 2026-09-30 · Biolink Life Sciences Carolinas

    Sterility

    Sterile

    Endotoxin

    <2 EU/mL

    Potency

    99.6%

  • Lot 092126-SEL-2

    Tested 2026-09-23 · Biolink Life Sciences Carolinas

    Sterility

    Sterile

    Endotoxin

    <2 EU/mL

    Potency

    99.7%

Compounded by licensed U.S. pharmacies. Prescribed by licensed medical providers. Shipped directly to patients.Documentation available upon request →View lab results by lot →
Your protocol

How Selank is prescribed.

Who it's for
  • Adults with stress, anxiety or a racing mind their physician has evaluated
  • People who want to feel calm without feeling sedated
  • Anyone who wakes at night with their thoughts spinning
  • Patients pairing it with Semax for calm plus focus

Your physician decides whether Selank is appropriate for you after reviewing your intake and labs.

Directions & duration

Inject 0.25 mL (25 units) subcutaneously once daily Monday through Friday.

Cycle. One small injection each day, Monday through Friday. Ongoing monthly treatment; your physician adjusts the dose as your goals evolve.
Directions shown are the pharmacy's standard for this preparation. Your prescription label is the final word.
What's included
  • Licensed physician review of your intake, history, and labs
  • Medication compounded to your prescription by a PCAB-accredited, FDA-registered pharmacy
  • Every batch independently tested before release
  • Sterile syringes and alcohol prep pads for injectables
  • Tracked delivery to your door, refills on schedule
  • Message your physician anytime; dose changes without an appointment
Storage & handling
  • Store refrigerated (36–46°F / 2–8°C) at all times, including before first use.
  • One vial is your monthly supply. A fresh vial ships every 28 days on your refill schedule, so you're always well inside the beyond-use date on your label.
  • Protect from light. Wipe the stopper with an alcohol pad before every draw.
  • Dispose of syringes in the sharps container per the included instructions.
What to expect

A typical course of Selank.

TimeframeWhat patients commonly report
Week 1A calmer baseline and less stress reactivity are the earliest reports.
Weeks 2–6Better sleep quality and a steadier mood are what patients report most in this window.
OngoingLong-term treatment. Refills ship every 28 days, and your physician adjusts the dose over time as your goals evolve.
Individual results vary. Compounded medications are not FDA-approved; a licensed physician determines whether treatment is appropriate and monitors your progress.
The full reference

Everything published
about Selank.

How it is described to work, pathway by pathway. What the research shows and what it does not. Where it stands with the FDA, dated and sourced.

Read the reference
14
References

peer-reviewed, each verified on PubMed

14
Sections

mechanism, evidence, dosing, safety, FAQ

Sep 24
FDA status verified

2026 · checked against fda.gov, not memory

The science

How Selank works, and what the research shows.

How it works

Selank is a synthetic analog of tuftsin that modulates GABA, serotonin, and dopamine.

It reduces anxiety without sedation and enhances focus.

Originally developed by Russian researchers and used by cosmonauts and military personnel.

References

  1. Kozlovskaya MM, Kozlovskii II, Val'dman EA et al.. Selank and short peptides of the tuftsin family in the regulation of adaptive behavior in stress · Neurosci Behav Physiol (2003) · PMID 14969422
  2. Zozulia AA, Neznamov GG, Siuniakov TS et al.. Efficacy and possible mechanisms of action of a new peptide anxiolytic selank in the therapy of generalized anxiety disorders and neurasthenia · Zh Nevrol Psikhiatr Im S S Korsakova (2008) · PMID 18454096
  3. Medvedev VE, Tereshchenko ON, Israelian AIu et al.. A comparison of the anxiolytic effect and tolerability of selank and phenazepam in the treatment of anxiety disorders · Zh Nevrol Psikhiatr Im S S Korsakova (2014) · PMID 25176261
  4. Medvedev VE, Tereshchenko ON, Kost NV et al.. Optimization of the treatment of anxiety disorders with selank · Zh Nevrol Psikhiatr Im S S Korsakova (2015) · PMID 26356395
  5. Uchakina ON, Uchakin PN, Miasoedov NF et al.. Immunomodulatory effects of selank in patients with anxiety-asthenic disorders · Zh Nevrol Psikhiatr Im S S Korsakova (2008) · PMID 18577961
  6. Zozulya AA, Kost NV, Sokolov OY et al.. The inhibitory effect of Selank on enkephalin-degrading enzymes as a possible mechanism of its anxiolytic activity · Bull Exp Biol Med (2001) · PMID 11550013
  7. Vyunova TV, Andreeva L, Shevchenko K, Myasoedov N. Peptide-based Anxiolytics: The Molecular Aspects of Heptapeptide Selank Biological Activity · Protein Pept Lett (2018) · PMID 30255741
  8. Volkova A, Shadrina M, Kolomin T et al.. Selank Administration Affects the Expression of Some Genes Involved in GABAergic Neurotransmission · Front Pharmacol (2016) · PMID 26924987
  9. Filatova E, Kasian A, Kolomin T et al.. GABA, Selank, and Olanzapine Affect the Expression of Genes Involved in GABAergic Neurotransmission in IMR-32 Cells · Front Pharmacol (2017) · PMID 28293190
  10. Inozemtseva LS, Karpenko EA, Dolotov OV et al.. Intranasal administration of the peptide Selank regulates BDNF expression in the rat hippocampus in vivo · Dokl Biol Sci (2008) · PMID 18841804
  11. Kolik LG, Nadorova AV, Antipova TA et al.. Selank, Peptide Analogue of Tuftsin, Protects Against Ethanol-Induced Memory Impairment by Regulating of BDNF Content in the Hippocampus and Prefrontal Cortex in Rats · Bull Exp Biol Med (2019) · PMID 31625062
  12. Doyno CR, White CM. Sedative-Hypnotic Agents That Impact Gamma-Aminobutyric Acid Receptors: Focus on Flunitrazepam, Gamma-Hydroxybutyric Acid, Phenibut, and Selank · J Clin Pharmacol (2021) · PMID 34396551
  13. Shiffman S, Stone AA, Hufford MR. Ecological momentary assessment · Annu Rev Clin Psychol (2008) · PMID 18509902
  14. Panikratova YR, Lebedeva IS, Sokolov OY et al.. Functional Connectomic Approach to Studying Selank and Semax Effects · Dokl Biol Sci (2020) · PMID 32342318

Citations are provided for educational purposes. They do not constitute medical advice. Always discuss any peptide protocol with your prescribing physician.

Important safety information

+

Possible side effects

• Mild nasal irritation (uncommon)

Do not use if you have

• Active cancer or history of cancer (unless approved by oncologist)
• Pregnancy or breastfeeding
• Severe kidney or liver disease
• Known allergy to the peptide or excipients

If you experience severe side effects, call 911 or go to your nearest emergency room.

How supplied

5 mL multi-dose vial, Selank 2 mg/mL (10 mg Selank per vial)

Common questions

Frequently asked
about Selank (Injectable).

A synthetic peptide analog of tuftsin that modulates GABA and serotonin for calm focus. Selank is prescription-only at Pepti: a licensed physician reviews your assessment and, if appropriate, prescribes it to be compounded by a state-licensed, FDA-registered pharmacy.

32 more questions about Pepti, answered.

One vial is your monthly supply at the dose your physician prescribes. A fresh vial ships about every 28 days, and the date moves if your physician changes your dose. Store it as the pharmacy label directs, refrigerated.

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Pharmacy network accreditation

PCAB-accredited pharmacies on every order.

Every fulfillment runs through a PCAB-accredited pharmacy.

See the lab results
PCAB — Pharmacy Compounding Accreditation Board · Accredited
  • Rigorous third-party quality & safety inspections
  • Cleanliness and sterile processes
  • Proper ingredient sourcing
  • Accurate dosing and formulation
  • Staff training and procedures
  • Accredited by NABP & ACHC