Brain Health & Memory · Rx only

Semax / Selank, prescribed — not just shipped.

Skip the gray-market guesswork. A licensed clinician reviews your health history, a licensed U.S. pharmacy compounds your prescription, and a care team stays with you after it ships.

$256.50 / mo$285 as a single month · $684 for a 3-month supply

Start visit

A licensed clinician reviews every request. If Semax / Selank fits your health history, they write your prescription and your pharmacy takes it from there.

Licensed U.S. providers Licensed U.S. pharmacy All 50 states + D.C.

Requires an online medical evaluation. Prescribed only when a licensed provider determines it's appropriate.

A licensed clinician in a consultation room

Share your health history

Semax / Selank has its own online clinical questionnaire — your history, medications, and goals.

Your answers get a careful review

A clinician reads your history and takes the time to get it right before anything is prescribed.

Your pharmacy ships

Compounded for your prescription and shipped cold-chain, with care-team check-ins after.

The safe way to take Semax / Selank seriously

Semax / Selank is easy to find online and hard to trust there. Promise works the way medicine is supposed to work — a clinician decides, a licensed pharmacy fills, and someone stays accountable to you.

A real prescription

Prescribed for you specifically, after a real look at your health history — never pulled off a shelf.

A real pharmacy

Your prescription is compounded for you by a licensed U.S. pharmacy — not a mystery vial from an unregulated website.

Real oversight

Temperature-safe shipping, follow-up check-ins, and a care team that answers — before and after your medication arrives.

Product details

Form: Injectable vial (subcutaneous), 1 mg / 1 mg per mL
Supply: 35-day supply
Pharmacy: Compounded by a licensed U.S. pharmacy
Availability: Ships to all 50 states + D.C.; not all treatments are available in every state

Two peptides, two mechanisms

Semax is a modified fragment of ACTH studied around BDNF expression; Selank is a tuftsin analog studied around GABAergic and serotonergic signaling.

Studied as modulators, not stimulants

Neither compound is a stimulant and neither is a sedative. The research reads the pairing as complementary: one oriented to cognitive processing, one to calm without sedation.

Prescribed, never simply supplied

A licensed provider reviews your history and your current medications, then decides whether this pairing fits.

In brief.

Semax and Selank come from a different research tradition than most of this catalog. Both were developed in Russia, both are registered as medicines there, and both have a literature that is decades deep and largely untranslated. They are prescribed here as a pair, because the two are studied for complementary things: one oriented toward cognitive processing, the other toward calm without sedation.

Neither is FDA-approved. A licensed provider reviews your health history before either is prescribed. That review is the whole gate, and it matters more here than usual, because the evidence base asks for a careful reader.

What each peptide is

Semax is a synthetic fragment of ACTH — the 4-10 sequence — modified at one end so it is not broken down as quickly as the natural fragment. Stripped of the hormonal activity of the full molecule, what remains has been studied for its effect on brain-derived neurotrophic factor expression and on the signaling involved in attention and cognitive processing.

Selank is a synthetic analog of tuftsin, a short peptide derived from an immune protein. The published research on it centers on anxiolytic signaling, with work looking at GABAergic and serotonergic modulation and at the expression of genes associated with the stress response.

Neither compound is a stimulant and neither is a sedative. The research reads both as modulators — molecules studied for their influence on signaling systems already running, rather than for pushing a system in one direction.

Why they are prescribed together

The pairing exists because the two are studied at opposite ends of the same complaint. A person who wants to think clearly and does not want to feel wired is describing two separate problems, and stimulant approaches tend to trade one against the other.

How the two are combined is a clinical decision, not a fixed recipe. Your provider may prescribe them together, adjust the balance, or decide that neither is a fit for your history. Because Selank is studied in the same neurotransmitter territory that several common prescriptions act on, your current medication list matters here more than it does with most peptides.

What the evidence actually looks like

This is the part that deserves candor. Most of the human data on both compounds is Russian-language literature, published over several decades, in an environment with different evidence requirements than the FDA applies. Trial sizes are small by contemporary standards, independent replication is limited, and much of the mechanistic work is preclinical.

That is not the same as no evidence, and it is not the same as strong evidence. Semax and Selank are not FDA-approved, and compounded medications are not reviewed by the FDA for safety, effectiveness, or quality.

So we are not going to tell you what these peptides will do for your attention or your mood. The literature does not support that kind of statement, and a page that made one would be selling you something other than the truth.

How Semax / Selank is prescribed

Everything starts with an intake questionnaire built for this pairing specifically: your health history, current medications, mental-health history, and what you are trying to address. A licensed provider reads it.

If the pairing is a reasonable fit, they write the prescription and set the protocol. If it is not, they decline and tell you why. Some people are better served by addressing sleep, thyroid, or an existing medication first, and a good clinician will say so instead of writing a prescription.

What treatment looks like

If you are prescribed, your medication is compounded and dispensed by a licensed U.S. pharmacy, and shipped in discreet, temperature-safe packaging. Dosing comes from your provider's protocol; with two peptides in one plan there is no generic schedule worth copying from anywhere else.

After that it is check-ins. Your care team follows up and anything that needs adjusting is adjusted with a clinician involved. These peptides sit in our brain health and memory category, and if what you are chasing is closer to daytime energy than to cognitive processing, energy and focus is the more honest place to start. Either way, the work of keeping your promise to yourself stays yours; this is support, not a shortcut.

Common questions

What are Semax and Selank?

They are two synthetic peptides developed in Russia and prescribed here as a pair. Semax is a modified fragment of ACTH, the 4-10 sequence, engineered to resist rapid breakdown; without the hormonal activity of the full molecule, it has been studied for effects on brain-derived neurotrophic factor expression and on signaling involved in attention and cognitive processing. Selank is a synthetic analog of tuftsin, a short immune-derived peptide, and research on it centers on anxiolytic signaling, including GABAergic and serotonergic modulation.

Why are they prescribed together?

Because the research reads them as complementary rather than redundant. The published interest in Semax sits around cognitive processing and attention signaling; the interest in Selank sits around calm without sedation. Pairing them is a clinical decision made by your provider, not a fixed formula, and a provider may prescribe differently or decline the pairing entirely based on your history.

Is Semax FDA-approved?

No. Neither Semax nor Selank is FDA-approved. Both are compounded medications, and compounded medications are not reviewed by the FDA for safety, effectiveness, or quality. Both are registered as medicines in Russia, which is a different regulatory system with different evidence requirements, and that registration confers nothing in the United States. They are prepared here by a licensed U.S. compounding pharmacy against a prescription written for you specifically.

How good is the human evidence?

It is thinner than the interest around these peptides suggests. Most human data is Russian-language literature published across several decades, trial sizes are small by contemporary standards, independent replication outside that tradition is limited, and a good deal of the mechanistic work is preclinical. That is not the same as no evidence, and it is not the same as strong evidence. We would rather tell you where the literature actually stands than describe results it does not support.

Do I need a prescription, and how does the visit work?

Yes. You complete the intake questionnaire built for Semax / Selank, which is its own clinical form covering your health history, current medications, and what you are trying to address. A licensed provider reviews your answers and prescribes only when this pairing is appropriate for you. If you are prescribed, a licensed U.S. pharmacy compounds and dispenses your medication and ships it in temperature-safe packaging, with follow-up check-ins from your care team.

Related treatments

Other Brain Health & Memory options a provider may consider.

Focus

Semax

Brain Health & Memory

A synthetic peptide derived from a fragment of ACTH, developed in Russia and studied around BDNF expression, offered on Promise today only inside the Semax / Selank combination.

About Semax →

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Requires an online medical evaluation. Prescribed only when a licensed provider determines it's appropriate.

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