Selank
Calm Focus Steady Mood
Feel calmer.
Semax 10 mg
$120
High-purity Semax for focus and clear thinking. For adults who want to focus and think clearly.
- 99% purity or higher
- Sterile, tested by PCR
- Non-pyrogenic, tested by LAL
- Tested in the USA
- Free shipping in Mexico
- Pay by SPEI bank transfer
Your dose, on the dial.
The dial counts in units of 0.01 mL: 10 units is 0.10 mL, and 100 units, the most one press gives, is 1 mL. How much peptide a unit holds depends on the pen’s strength, so the same number of units gives a different dose on each pen. Enter the dose your doctor gave you to see how many units to set.
Enter your dose to see the number to set.
About Semax
What Semax is
Semax is a short peptide made from part of a hormone the body uses under stress. In Russia it is prescribed as nasal drops for thinking problems after a stroke and for mental fatigue.
Every study in people used the drops. None tested an injection under the skin.
What Semax is studied for
- Focus: Studied in 19 healthy men, given a nasal dose.
- After a stroke: Studied in three small Russian trials of nasal drops, with 181 stroke patients in all.
- Memory and learning: Studied in rats.
What the research shows.
Semax is a short peptide prescribed in Russia as nasal drops for thinking problems after a stroke and for mental fatigue. Every study in people used the drops, and none tested an injection under the skin. Each study used its own supply, dose and schedule, so its results describe that study rather than promise what this pen will do.
Focus
Small studies, Nasal drops
In 19 healthy men, a nasal dose improved their performance on work tasks for 20 to 24 hours.
After a stroke
Small studies, Nasal drops
A review could combine only three small Russian trials, with 181 stroke patients in all, and US regulators judged the evidence too thin to show that it works.
Sources: Shmonin, 2018 (opens in a new tab); FDA Semax review, 2026 (opens in a new tab)
Memory and learning
Animal studies, Rats
In rats, it raised a growth factor that helps brain cells, and the rats did better on learning tests.
How every lot is tested
Every lot of Semax goes through three tests before it is sold.
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Every lot is 99% pure or more, and your pen’s exact purity is printed on its tube.
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Every lot we sell has passed the sterility test: no bacteria or other microbes were detected.
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Every lot we sell has passed the test for endotoxins, traces of bacteria that can cause fever after an injection.
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An independent laboratory in the USA runs every test.
Side effects and cautions
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Its Russian label rules it out for people with anxiety disorders or a history of seizures.
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US regulators flag a possible risk of bleeding, and found no data on how Semax behaves in the human body, by any route.
Allergy warning
Don’t use Semax if you have ever had an allergic reaction to it or to anything else in the pen. Get help straight away if you have swelling of the face, lips or throat, trouble breathing, or a rash that spreads after an injection.
Pregnancy and breastfeeding
Semax has not been studied in pregnancy or breastfeeding. If you are pregnant, trying to become pregnant or breastfeeding, talk with your doctor before using it.
Medicines and health conditions
If you take any medicine or have a health condition, talk with your doctor before using Semax, and tell them you use it.
Anxiety and seizures
Its Russian label rules it out for people with anxiety disorders or a history of seizures.
Bleeding
US regulators flag a possible risk of bleeding. Talk with your doctor first if you have a bleeding disorder or take a medicine that thins the blood.
Age
For adults 18 and over.
Frequent questions
Is Semax right for me?
Semax is for focus and clear thinking. Its studies in people were small and used nasal drops, so no one can yet say what an injection does. Talk with your doctor before you start, and don’t use it if you have an anxiety disorder or have had seizures.
What is the difference between Semax and Selank?
Both are short peptides first developed in Russia and studied as nasal drops. Semax has been studied for focus and for thinking after a stroke, Selank for anxiety and stress.
What side effects can Semax cause?
US regulators found no data on how Semax behaves in the human body, by any route, and flag a possible risk of bleeding. Tell your doctor about any reaction where you inject it, or anything else unusual.
What testing does Pure99 complete for Semax?
Every lot of Semax is tested by an independent laboratory in the USA before it is sold. The laboratory measures its purity by HPLC, tests it for bacteria and other microbes by PCR, and measures its endotoxins by LAL. Endotoxins are the toxins bacteria leave behind even in a sterile solution, and they can cause fever and aches after an injection.
How much Semax should I take?
Take Semax only as your doctor directs: Pure99 doesn’t recommend a dose. The pen’s dial counts in units of 0.01 mL, from 1 to 100 a press, and the same number of units gives a different dose on each pen. The dose guide on this page turns your dose into the number of units to set.
How many doses are in one Semax pen?
Every pen holds 3 mL, which is 300 units on the dial. How many doses that makes depends on your dose: the dose guide on this page shows how many doses of your size a pen holds.
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