Selank
Quick facts
- Researched for
- Stress, anxiety, social comfort, mood and calmer focus
- Route or form
- Injection (as NA-Selank); nasal spray coming soon
- Evidence so far
- Small trials in Russia found it eased anxiety about as well as a prescribed drug.
- Not established
- Studies of plain Selank do not directly prove what NA-Selank does.
- Commonly researched
- 300 mcg, dailyPractitionerSee every range
- Where to get it
- At our partner, US Precision Peptides.Go to Next step
By the Learn Peptides editorial team · Updated · How We Research
What people are researching it for
People are researching Selank for stress, anxiety, social comfort, mood, and calmer focus.
This visual summary is about NA-Selank, the N-acetyl form. This page covers Selank in general, so not everything on it may apply to both.
A calmer mind. A brighter you.
- What is NA-Selank?
- a synthetic heptapeptide (7 amino acids)
- Checklist: 7 amino acids
- How does it work?
- Note: Exact mechanisms are still being researched.
- Common research use cases
- Not written out in this text version.
- How it's used in research
- Route: Intranasal (common)
- Route: Subcutaneous
- Route: Other (research dependent)
- Common dosing: 250 to 1,000 mcg per day
- Common dosing: 1 to 2 times daily
- Common dosing: Duration varies (from days to weeks)
- Often combined with: NA-Semax (complementary)
- Often combined with: Other cognitive peptides
- Often combined with: Lifestyle and training protocols
- There is no standardized dose or protocol. Research use should be thoughtful, tracked, and adjusted based on individual response.
- What users report
- Keep in mind: Results vary widely
- Keep in mind: Not everyone responds
- Keep in mind: Headaches and paradoxical anxiety are reported
- Keep in mind: More human studies are needed on NA-Selank specifically
- Key takeaway
- It's not a magic solution, but many researchers report a calmer mind, better emotional control, and improved quality of life.
- The bottom line
- NA-Selank is a promising research peptide for anxiety, stress, and emotional regulation, with a strong and consistent anecdotal profile. More high-quality human studies are needed. Use only high-purity peptides, follow a research-focused approach, and set realistic expectations.
Reasons people look into Selank. An interest is not a promise that it works.
- Cognitive & mood
People most often say they feel calmer, less anxious and more at ease around others.
Community reports
Community discussion around plain Selank centers on calmer stress response, less anxiety, social comfort, mood, and calmer focus.
Community reports
Selank is the calming counterpart to Semax, used in the evening or before stressful situations to ease anxiety, rumination, and stimulant jitters without feeling sedated. It works well for many people, but a fair share feel nothing, and a smaller group actually feels more anxious or foggy after taking it.
Small human studies of plain Selank report less anxiety.
Small human studies of plain Selank report less anxiety.
Semax's usual partner, discussed for quieting background anxiety so focus has room to show up.
What this is based on
- Human researchStudied in people for this or a related question.
- Community reportsWhat people describe noticing. Not proof of cause.
- Learn Peptides explanationOur own plain-English summary of the sources. It is not a source itself.
Studies of plain Selank do not directly prove what NA-Selank does.
Plain Selank evidence cannot be treated as direct proof of NA-Selank.
Safety notes
Tested in people. How many took part, for how long, and who they were still matter.
- You have trouble breathing or wheezing, or your face, lips, tongue or throat swell.
- You get hives away from the injection site, or feel severely dizzy or faint.
For these signs, call 911 or your local emergency number.
- Redness spreads, or heat, swelling or pain keeps growing where you injected.
- A lump keeps growing or does not go away, or you see pus or red streaks.
- You have a fever or chills, or feel sick all over.
- Anxiety, panic, bipolar or another mood condition. Usually calming, but a minority report more anxiety, especially while tapering psychiatric medicine.
Questions to bring to your doctor
Only for the conditions this page cautions about. Bring this page with you.
- What mood changes on Selank should make me stop and call you?
Shows one practitioner amount for use in the nose; none is listed for injecting it.
Commonly researched ranges, and how they were measured.
Commonly researched range for Selank
300 mcg
daily · Nasal spray
Practitioner
This range is for nasal use. No commonly researched range is recorded for the injectable form yet.
The range in our record
Each one is labeled with where it comes from. They are different ways of using Selank, not steps to follow in order.
Quick-reference figure
Practitioner- Amount per dose
- 300 mcg
- How often
- Daily. Evening.
- Typical schedule
- Not stated
- Route
- Nasal spray
From our visual summary
Community reports
Community reports, from the Learn Peptides visual summary. These lines sit beside the ranges above and are not merged with them.
- Common dosing
- 250 to 1,000 mcg per day
- 1 to 2 times daily
- Duration varies (from days to weeks)
There is no standard dose. Track how you respond, and change one thing at a time.
These ranges were last reviewed Sep 2026.
It was first made for stress and mood, and is often called Semax's calming partner.
Selank was originally developed to support stress resilience and mood balance, and it's also discussed for immune-modulating effects. Most often it comes up alongside Semax: one is described as sharpening focus while the other reduces the mental static that gets in the way of it.
Next step
US Precision Peptides
US Precision Peptides sells NA-Selank, the N-acetyl form, a variant of Selank, not Selank itself.
About product links
Purchases at US Precision Peptides help keep Learn Peptides free.