> ## Site index
> Full index of Peptides.build at https://peptides.build/llms.txt. Use it to discover every page.

# Buy Semax and Selank: Prescribed Online

Buy Semax / Selank with a prescription: compounded by a licensed 503A pharmacy, pre-mixed, from 183/mo. Vs research vials and sprays.

URL: https://peptides.build/buy/semax-selank/

Buy Semax and Selank · prescription

# Buy Semax and Selank legally: prescribed online, pharmacy-made

Updated October 30, 2026 · Prices checked on each seller's own page

## The short answer

You can buy Semax and Selank legally with a prescription. At Peptides.build a licensed US provider reviews a five-minute intake, and a licensed 503A pharmacy compounds Semax and Selank together as one injectable blend, shipped already mixed: $225 month to month or $183/mo on 6 months. Semax alone is not offered here. Most Semax and Selank sold online, sprays included, is labeled for research use only.

![Semax / Selank prescription vial](/media/products/semax-selank.webp)

 US-supervised · all 50 states

[Semax / Selank](https://peptides.build/protocols/semax-selank/)Blend: outside the HHS policy

**$183**/mo*$1,099 billed every 6 months*

-   🇺🇸 Prescribed by a licensed US provider
-   🇺🇸 Made by a licensed US 503A pharmacy
-   Arrives pre-mixed and labeled
-   HealthProtect verified

Pay over time at checkout![Klarna](/media/payments/klarna.png)![Afterpay](/media/payments/afterpay.png)![Affirm](/media/payments/affirm.png)

Prescription required. Your provider decides if it is appropriate. Compounded medications are not FDA-approved.

Your options

## Where can you buy Semax and Selank?

The options we checked on October 30, 2026, as each one prints them. Prescribed versions come as an injectable blend or a nasal spray; most search results sell research-use-only sprays and powders.

Semax and Selank: where to buy, as published
| Seller | What you get | Price | Prescription | Made by |
| --- | --- | --- | --- | --- |
| **Peptides.build** | Semax / Selank injectable blend, pre-mixed | **$225/mo, or $183/mo on 6 months** | Prescription | Licensed US 503A pharmacy |
| [Pepti](https://hellopepti.com/peptide/semax-selank) | Injectable blend | [$259 per month](https://hellopepti.com/peptide/semax-selank) | Prescription | Compounding pharmacy (their wording: FDA-registered) |
| [Rx Peps Direct](https://www.rxpepsdirect.com/peptides/cognitive/semax-selank) | Nasal spray, per order, 28 states plus DC | [$150 spray + $39 review + $15 shipping, every order](https://www.rxpepsdirect.com/peptides/cognitive/semax-selank) | Prescription | 503A pharmacy, billed separately |
| American Peptides | Powder vial, mix it yourself | $70 per vial | Research use only | Research-use-only seller |
| American Peptides | Liquid spray | $90 ($63 in a sale ending November 1) | Research use only | Research-use-only seller |

American Peptides is named but not linked: it sells for research use only. Rx Peps Direct is cheaper per order, with review and shipping repeating each time; its spray is a different form from our blend.

Prescribed, pre-mixed

## Semax / Selank, prescribed and pre-mixed

 US-supervised · all 50 states

[Semax / Selank](https://peptides.build/protocols/semax-selank/)Blend: outside the HHS policy

**$183**/mo*$1,099 billed every 6 months*

Pay over time at checkout![Klarna](/media/payments/klarna.png)![Afterpay](/media/payments/afterpay.png)![Affirm](/media/payments/affirm.png)

Prescription required. Your provider decides if it is appropriate. Compounded medications are not FDA-approved.

Research vs prescription

## Research Semax / Selank vs prescribed: what are you really buying?

Research-use-only Semax / Selank vs Peptides.build
|  | Prescribed (Peptides.build) | Research use only |
| --- | --- | --- |
| Label |  Pharmacy label with the concentration |  "Not for human or veterinary use" (the seller's own words) |
| Prescription |  Yes, from a licensed US provider who reviews your history |  None: nobody checks whether it is right for you |
| Who makes it |  A licensed US 503A compounding pharmacy |  A seller you cannot verify |
| Contaminants |  Compounded by a licensed pharmacy for one patient |  Health Canada warns of solvents, heavy metals, particles, bacteria and endotoxins in peptides bought online |
| Arrives as |  Liquid, already mixed, ready to draw |  Powder you mix, or a spray of unknown concentration |
| If something goes wrong |  Your provider, the pharmacy and FDA MedWatch |  No prescriber, no pharmacy, no reporting route |

More on this: [research peptides vs prescription peptides](https://peptides.build/learn/research-peptides-vs-prescription-peptides/).

⚠ Read before you buy a research vial

## What regulators say about peptides like Semax and Selank sold "for research use only"

These are their words, not ours. Each quote links to the official source.

> “Injectable drug products can pose risks of serious harm to users. Injectable products are delivered directly into the body, sometimes directly into the bloodstream, and therefore, bypass some of the body's key defenses against toxins and microorganisms.”

[U.S. FDA, warning letter to a research-peptide seller](https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/gram-peptides-721806-03312026) · March 31, 2026

> “Despite statements on your product labeling marketing your products for "Research Use Only," … your products are intended to be drugs for human use.”

[U.S. FDA, same letter, on the "Research Use Only" label](https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/gram-peptides-721806-03312026) · March 31, 2026

> “\[They can\] contain contaminants, such as solvents, heavy metals, particles (fibers, glass, plastic), or microbials (bacteria, fungi, endotoxins).”

[Health Canada, public advisory on peptides bought online](https://recalls-rappels.canada.ca/en/alert-recall/think-twice-injecting-peptides-bought-online-unauthorized-products-can-seriously-harm) · 2026

> “This type of labelling does not make these products legal or exempt from regulatory requirements.”

[Health Canada, same advisory](https://recalls-rappels.canada.ca/en/alert-recall/think-twice-injecting-peptides-bought-online-unauthorized-products-can-seriously-harm) · 2026

HHS gave the same reason for its October 28, 2026 peptide policy: to pull patients away from research-use-only peptides supplied by foreign manufacturers. [Read our HHS policy explainer](https://peptides.build/news/hhs-peptide-policy/).

✓ How Peptides.build is different

### We are prescribed, pharmacy-made, labeled and verified

-   No prescription, nobody checks it is right for you🇺🇸 A licensed US provider reviews your intake and prescribes only if it is appropriate. Physician oversight by Arora Health & Aesthetics, LLC.
-   Unknown maker, possible contaminants🇺🇸 A licensed US 503A compounding pharmacy prepares it for you, one patient at a time.
-   "Not for human use" labelLabeled by the pharmacy that made it, with the concentration printed on the vial.
-   Powder you mix yourselfArrives already reconstituted by the pharmacy, cold-chain, ready to draw.
-   No one to call if something goes wrongYou keep access to your provider for check-ins, and adverse events can be reported to FDA MedWatch.
-   Unverified sellerHealthProtect verified telehealth brand, with a public register entry anyone can check. We sell no research-use-only products.

Compounded medications are not FDA-approved. Blends are outside the HHS peptide policy, which covers single-ingredient products; they are still prescribed by a licensed provider. [Check our HealthProtect entry](https://www.healthprotect.ai/verify?domain=peptides.build) · [How to check us](https://peptides.build/is-peptides-build-legit/)

What you are buying

## What are Semax and Selank?

The two peptides and their status under the HHS policy on their own
| Peptide | Research to date | HHS policy (alone) |
| --- | --- | --- |
| Semax | Synthetic peptide derived from a fragment of ACTH, studied for attention and neuroprotective signaling | Covered alone, nasal only |
| Selank | Synthetic peptide derived from tuftsin, studied for anxiolytic pathways without a sedative profile | Not named |

Both were developed in Russia and have published mechanism research; neither is an FDA-approved drug. As a two-peptide injectable, **the Semax / Selank blend is outside the HHS peptide policy**, which covers Semax only alone and by nasal spray. It is still prescribed here by a licensed provider after an intake. Read [is Semax legal?](https://peptides.build/legal/semax/), [Semax vs Selank](https://peptides.build/learn/semax-vs-selank/) or [what is Selank?](https://peptides.build/learn/what-is-selank/)

Four steps

## How do you buy Semax and Selank online?

1.  **Start the intake**: about five minutes, your history and goals.
2.  **Provider review**: a licensed US provider decides whether the blend is appropriate and writes the prescription.
3.  **Pharmacy**: a licensed US 503A pharmacy compounds both peptides in one vial and mixes it.
4.  **Delivered cold**: 2 to 3 business days in transit, adult signature, ready to draw. Pay monthly, or split a plan with Klarna, Afterpay or Affirm.

Every plan and price: [Semax / Selank price per month](https://peptides.build/pricing/semax-selank/).

Why Peptides.build

## Prescribed by a provider. Made by a pharmacy. Verified.

**Prescribed**A licensed US provider reviews your intake and prescribes only if it is appropriate. Physician oversight by Arora Health & Aesthetics, LLC.

**Pharmacy-made**A licensed US 503A pharmacy compounds it for you and ships it directly, cold-chain. Nothing is mixed by us, and nothing is mixed by you.

**Verified**Peptides.build is a HealthProtect verified telehealth brand. Check the public register entry yourself.

Common questions

## FAQ

### Where can I buy Semax and Selank legally?

With a prescription, from a telehealth provider whose licensed pharmacy compounds them. At Peptides.build the Semax / Selank blend is $225 month to month or $183/mo on 6 months. Sprays and vials sold as "research use only" are labeled not for human use.

### Can I buy Semax alone here?

No, Semax alone is not offered here; the closest live protocol is the Semax / Selank blend. Elsewhere, Pepti lists injectable Semax at $229 per month and Rx Peps Direct a Semax nasal spray at $125 spray + $39 review + $15 shipping, every order.

### Is Selank for sale without a prescription legal?

Selank sold without a prescription is labeled for research use only. FDA has warned research-peptide sellers that this label does not change what the products are intended for.

### Is Semax / Selank legal?

The HHS policy of October 28, 2026 covers Semax free base only on its own and only as a nasal spray, and does not list Selank. This injectable blend is outside the policy. Peptides.build offers it only when a licensed provider prescribes it after an intake.

### Is it a nasal spray or an injection?

At Peptides.build it is an injectable blend, compounded and mixed by the pharmacy. Rx Peps Direct sells a prescribed nasal spray; the form changes what you buy and how the HHS policy treats it.

### How much does Semax / Selank cost?

$225 a month or $183/mo on 6 months here, all-in. Pepti publishes $259 per month; Rx Peps Direct prints $150 spray + $39 review + $15 shipping, every order.

### Is Semax / Selank FDA-approved?

No. Neither Semax nor Selank is an FDA-approved drug in the US, and compounded medications are not FDA-approved.

### Can I pay with Klarna, Afterpay or Affirm?

Yes. Klarna, Afterpay and Affirm are offered at checkout, so you can split the cost of a plan.

Prescribed, not mixed at home

## Tired of reconstituting?

A licensed US provider reviews a short online intake. If a prescription is appropriate, a licensed US 503A pharmacy fills it and ships it cold-chain, already reconstituted and labeled with the concentration.

-   [Semax / Selank: plans, who it is for, FAQ](https://peptides.build/protocols/semax-selank/)
-   [Every protocol price, side by side](https://peptides.build/pricing/)
-   [Our pharmacies and provider](https://peptides.build/pharmacy-providers/)
-   By state: [California](https://peptides.build/states/california/) · [Florida](https://peptides.build/states/florida/) · [Texas](https://peptides.build/states/texas/) · [Nevada](https://peptides.build/states/nevada/) · [Maryland](https://peptides.build/states/maryland/)

Sources

## Where these facts come from

1.  [Pepti Semax + Selank page (checked Oct 30, 2026)](https://hellopepti.com/peptide/semax-selank)
2.  [Rx Peps Direct Semax/Selank nasal spray page (checked Oct 30, 2026)](https://www.rxpepsdirect.com/peptides/cognitive/semax-selank)
3.  [HHS 503A peptide enforcement-discretion policy, Appendix B (Semax free base, intranasal only)](https://www.hhs.gov/sites/default/files/hhs-503a-peptide-enforcement-discretion-policy-appendix-b.pdf)
4.  [FDA warning letter to a research-peptide seller (March 31, 2026)](https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/gram-peptides-721806-03312026)

This page is educational and is not medical advice. Compounded medications are not FDA-approved. No results are implied or guaranteed. A licensed provider decides whether any protocol is appropriate for you, and sets any dose.