Semax + Selank blend_Dosage, benefits & legal status
Also known as Selank + Semax, Semax + Selank, Semax Selank blend, Selank Semax nasal spray
Two Russian research peptides in one vial, sold for focus and calm together.
Common vial size is what vendors typically sell, not a recommendation. Enter your own vial in the calculator.
What is Semax + Selank blend?
Plain language first. The technical label stays, but it never stands alone.Overview
Semax and selank in one vial, sold as focus plus calm. Both are studied almost entirely inside one research program, and nobody has tested them together.
What it's used for
A blend of two Russian research peptides, sold together for focus, mood and stress.
How does Semax + Selank blend work?
What it does in the body, and where.These two are paired because their marketed effects are complementary, not because a study compared the pair against either one alone.
- 01Semax is the stimulating halfA fragment of ACTH modified to resist breakdown, marketed for attention and mental performance, and reported to affect BDNF.
- 02Selank is the calming halfDerived from tuftsin, marketed for anxiety without sedation, and reported to affect GABA signaling.
- 03Both carry the same evidence problemEach is registered in Russia and each rests on research produced largely inside one national program, with little independent replication. Combining two compounds does not combine their evidence.
Where this compound is thought to act.
What else is it used for?
Each use below carries its own evidence level. Approved means regulators have cleared it for that purpose. Investigational means it is in trials. Early research means it is being studied and is not established.
- Focus and mental performance, from the semax halfResearch only
- Anxiety and stress, from the selank halfResearch only
- Taken as a nasal spray rather than injectednone
The published record
Papers and trials about Semax + Selank blend
4 papers tagged human · 2 not reviews or lab · 0 clinical trial publications
Furthest stage reached: No clinical trial on record
Counted from Europe PMC indexing, not read by a person; a human tag can land on reviews, commentary or lab papers; clinical trial publications is the narrower count.
At a glance
Four things to know about Semax + Selank blend
Evidence
Category
Brain, mood and sleep
Common vial
Varies
Half-life
Both are short-acting, and the blend has no figure of its own
How much, and do you cycle it?
The range, and whether you take breaks.Research only, daily, by convention. Not established for the blend No range
No schedule has been studied for this combination. The components have different clearance times and different conventional frequencies, so a single shared schedule is a convenience of the vial rather than a finding.
Both are short-acting, and the blend has no figure of its ownNo figure
Semax and selank are both cleared quickly, which is part of why daily dosing is conventional for each. A blend has no single half-life. Each component clears on its own schedule, so one draw starts two or more different clocks. See each component's page.
You can compare this against the whole library to see where it sits.
How do I dose and price it?
Enter your vial and your dose. Pick a mix. We show the draw and the cost.The vial holds a fixed amount of drug. Adding more water does not make more drug, it just spreads it thinner, so you draw a bigger number on the syringe for the same dose.
Commonly sold as a 10/10 mg vial and as a combined nasal spray. Both components also exist as N-acetyl amidate versions, which are different molecules with longer stability. Check which form your label names, because a blend of the acetylated versions is not the same product as this one.
Pick your vial to see concentrations and a draw.
Choose your mix
Measuring the water1 mL = one full 100-unit syringe.
Your draw
What one draw delivers
The same arithmetic as the calculator, worked out for the vials vendors sell.Dose anchored to Semax, at the 550 to 1100 mcg per day people commonly cite. Each table assumes one draw per day. If you split it across more injections, divide the reading by the number of injections.
| Semax dose | 1 mL water | 2 mL water | 3 mL water |
|---|---|---|---|
| 550 mcg | Over 100 units: will not fit one U-100 syringe.
| Over 100 units: will not fit one U-100 syringe.
| Over 100 units: will not fit one U-100 syringe.
|
| 1100 mcg | Over 100 units: will not fit one U-100 syringe.
| Over 100 units: will not fit one U-100 syringe.
| Over 100 units: will not fit one U-100 syringe.
|
| Semax dose | 1 mL water | 2 mL water | 3 mL water |
|---|---|---|---|
| 550 mcg | Over 100 units: will not fit one U-100 syringe.
| Over 100 units: will not fit one U-100 syringe.
| Over 100 units: will not fit one U-100 syringe.
|
| 1100 mcg | Over 100 units: will not fit one U-100 syringe.
| Over 100 units: will not fit one U-100 syringe.
| Over 100 units: will not fit one U-100 syringe.
|
No published human study establishes a dose for this combination. Open each component's page for what is documented about it individually.
At a 1:1 ratio one draw delivers equal milligrams of both. That is a decision about the vial rather than about the two peptides, which have different potencies and were never matched to each other in any study.
Semax + Selank blend starts at $34.99 across 19 vendors, typically $3.75 – $14.50 per mg.
24 listings, last read Oct 11, 2026. Shipping and card fees are not included.
How do you store it?
Before mixing, and after.Fridge after opening. Use within about 30 days.
Store sealed Semax + Selank blend in the fridge. Once opened, keep it upright in the fridge and plan to finish it inside roughly 30 days. Keep it out of light and do not freeze the liquid.
What are the side effects and cautions?
Known cautions and warnings for this compound.Who should avoid it
- Pregnancy or breastfeeding
- Any prescribed psychiatric medication, without checking for interactions first
- Anyone who wants established safety data, because none exists for this combination in humans
Stop and get help
- Signs of an allergic reaction, including facial or throat swelling or trouble breathing
- A marked change in mood, sleep or agitation
- Nasal bleeding or persistent irritation, if using a spray
Common effects
- Nasal irritation with the spray form
- Headache
- Beyond these, unknown. There is no reliable human data on what this combination commonly causes
Where this page says nothing is established, that means nobody has studied it, not that a compound is safe.
Is Semax + Selank blend approved?
And where the numbers on this page come from.No. Semax + Selank blend is not approved for any use, anywhere. It is sold labeled for laboratory research only, and there is no legal route to buy it for human use.
- Approval statusResearch only
- RouteUnder the skin, or as a nasal spray
- Checked24 August 2026
- DoseFrom community reports. No regulator or trial established this dose.
- Vial sizeFrom what vendors typically list; not a recommendation.
- SourcesNone traced yet.
What has happened recently
We have not yet written a full regulatory note for this compound. The status above is current as of the date shown.
You can compare this against the whole library, or read how to check a seller.
What else is like Semax + Selank blend?
Others in Brain, mood and sleep, side by side.If you're weighing Semax + Selank blend, it's worth reading P21, N-Acetyl Semax, and N-Acetyl Semax Amidate in the same class.
Two Russian research peptides in one vial, sold for focus and calm together.
- Dose
- Research only
- How often
- Daily, by convention
An experimental peptide studied for new brain cells and memory.
- Dose
- Research only
- How often
- As studied
Semax with one stabilising tweak, sitting between plain Semax and the amidate version.
- Dose
- 0.2 up to 0.4 mg per day
- How often
- 1-2x daily
A longer-lasting version of Semax for focus and memory.
- Dose
- 0.2 up to 0.4 mg per day
- How often
- 1-2x daily
Guides for this compound
- How to Reconstitute a Peptide
Mix peptide powder with bacteriostatic water, step by step.
- How to Read an Insulin Syringe
Read the units, convert to millilitres, and draw the exact dose.
- mcg vs mg: The Peptide Dosing Mistake to Avoid
Your vial says mg and your protocol says mcg. Here is the conversion and how to check it.
- How to Read a Peptide COA
What the purity number does and does not tell you, and how to spot an edited report.
- How to Vet a Peptide Vendor
Independent COAs, HPLC purity, and the red flags that mean walk away.
Sources
No primary source has been traced for this compound yet. Treat everything on this page as unverified until one is. How we grade evidence
Beyond these, 12 records are indexed. Browse the records