Semax Nasal Spray Compounded

Compounded Semax nasal spray prepared to your prescriber’s specifications by CareFirst Specialty Pharmacy, a PCAB-accredited 503A compounding pharmacy licensed to dispense in all 50 states. Available as a 0.1% nasal spray in a 10mL bottle with a valid prescription.

Key Facts

Dosage form	Nasal spray (metered)
Strength	0.1% (1mg/mL) — Get Quote for other strengths
Bottle size	10mL
Storage	Refrigerate. Use within 21 days.
Price	$79.95
Prescription	Required (patient-specific)
FDA status	Not FDA approved (see regulatory status below)
Ships to	All 50 states

Key Takeaways

• Semax is a synthetic heptapeptide based on the 4–10 fragment of adrenocorticotropic hormone (ACTH), with a Pro-Gly-Pro tail added for stability.
• It was developed in Russia, where it is a registered medicine. It is not approved in the United States.
• Semax has historically been given intranasally, which is why it is compounded as a nasal spray.
• Most research comes from Russian clinical studies and animal models. Large Western trials have not been done.
• On October 28, 2026, HHS announced it will not take enforcement action against licensed compounding pharmacies making Semax while formal rulemaking continues. This is not FDA approval.
• Your prescriber decides the strength and schedule.
• The spray must be refrigerated and used within 21 days.

What Is Semax?

Semax is a short peptide made of seven amino acids: methionine, glutamic acid, histidine, phenylalanine, proline, glycine and proline (Met-Glu-His-Phe-Pro-Gly-Pro). Its first four amino acids come from positions 4–7 of ACTH, a hormone made by the pituitary gland. Researchers at the Russian Academy of Sciences added a three-amino-acid tail (Pro-Gly-Pro) so the peptide would resist rapid breakdown.

Unlike full-length ACTH, Semax was designed not to stimulate the adrenal glands or raise cortisol. Researchers have studied it mainly for its activity in the nervous system.

Like BPC-157 and oxytocin, Semax is a peptide, meaning a chain of amino acids. Many peptides are broken down quickly in the digestive tract, which is one reason Semax is given as a nasal spray instead of a pill.

What Is Semax Used For?

In Russia, Semax is registered as a prescription medicine and has been used mainly in the setting of ischemic stroke and other conditions affecting blood flow to the brain. It has also been studied there for cognitive and optic nerve conditions.

When FDA’s Pharmacy Compounding Advisory Committee reviewed Semax in July 2026, the uses under evaluation were cerebral ischemia, migraine and trigeminal neuralgia. A favorable committee vote is not a finding that Semax is effective for any of these conditions.

Online, Semax is widely discussed as a “nootropic” for focus and memory. Those claims are not supported by well-designed human trials, and CareFirst does not make treatment claims about Semax. Whether Semax is appropriate for you is a decision for your prescriber.

How Does Semax Work?

The exact way Semax acts in people is not fully understood. Animal research has focused on brain-derived neurotrophic factor (BDNF), a protein involved in nerve cell growth and survival. A 2006 rat study found intranasal Semax changed BDNF and its receptor (TrkB) in the hippocampus, a brain region involved in memory. Other animal studies have looked at effects on neurotransmitter systems and inflammation-related genes.

Animal findings do not always carry over to humans, so these results describe what researchers are studying, not what Semax will do for any individual patient.

Why a Nasal Spray?

Semax has been studied and used almost entirely by the intranasal route. The nasal lining is thin and well supplied with blood vessels, and peptides delivered there avoid the digestive enzymes that would break them down if swallowed.

CareFirst compounds Semax as a nasal spray. Your pharmacist can show you how to prime and use the spray bottle.

What the Research Shows, and What It Doesn’t

Semax has been studied for decades, mostly by research groups in Russia. A 2018 Russian clinical study in 110 people recovering from ischemic stroke reported that patients given intranasal Semax alongside rehabilitation had higher blood BDNF levels and faster recovery on standard function scales than patients who did not receive it. A review of 15 years of Russian research described its early development and pharmacology.

These studies were relatively small, were largely conducted and published in Russia, and have not been confirmed by large randomized trials in the U.S. or Europe. During its 2026 review, FDA scientific staff recommended against adding Semax to the 503A list, citing limited safety information for the proposed route and potential risks related to immune reactions and peptide impurities. The advisory committee voted in favor despite that staff recommendation.

• What we know: Semax has a decades-long research history, has been used clinically in Russia, and has mostly been given intranasally.
• What we don’t know: optimal dosing for U.S. patients, long-term safety, effectiveness for the uses people search for online, and how Semax interacts with other medications or conditions.

Semax Side Effects and Safety

In published Russian studies and reports, the most commonly mentioned side effect of intranasal Semax is nasal irritation. Because large, long-term safety studies have not been done, the full side-effect profile is not known.

Semax Dosage

CareFirst does not recommend doses. Your prescriber chooses the strength, the number of sprays, how often to use them, and for how long. Those directions will appear on your prescription label.

Dosing charts posted online often come from “research peptide” sellers or forums and are not a substitute for your prescriber’s directions. Concentration matters: products sold online come in different strengths, so the same number of sprays can deliver very different amounts of Semax. CareFirst compounds Semax at 0.1% (1mg per mL). If your prescriber needs a strength we don’t list, we can prepare a custom quote.

Semax and the FDA: Where Things Stand in 2026

July 24, 2026	FDA’s Pharmacy Compounding Advisory Committee (PCAC) voted 8–5, with one abstention, to recommend adding Semax (free base and acetate) to the Section 503A Bulk Drug Substances List. FDA staff had recommended against inclusion.
October 14, 2026	HHS sent an “Interim Access Policy for Compounding Using Certain Peptides” to the White House Office of Management and Budget for review.
October 28, 2026	HHS issued a notice exercising “enforcement discretion”: FDA will not pursue legal action against state-licensed compounding pharmacies and physicians making six peptides (Semax, BPC-157, KPV, TB-500, MOTS-c and Epitalon), even though they are not yet on the 503A Bulk Drug Substances List. These are the same six peptides the PCAC recommended in July.
Next	Formal rulemaking on adding Semax to the 503A Bulk Drug Substances List continues separately, including a proposed rule and public comment period.

What enforcement discretion means, and what it doesn’t

Enforcement discretion means FDA has said it will not take legal action against 503A pharmacies and physicians that compound Semax under the terms of the notice. It does not change the underlying law.

• It is not FDA approval. Semax remains legally an “unapproved drug.”
• It does not add Semax to the 503A Bulks List. That decision still depends on the separate rulemaking process.
• It is an interim policy. HHS can revise or withdraw it later.

Some details of the notice, including the specific sourcing, certification, and adverse-event reporting conditions pharmacies must meet, have not yet been confirmed.

For background on the July 2026 advisory vote, see Recent Developments on Peptide Use & Approval.

Semax vs. N-Acetyl Semax Amidate (NA-Semax)

“N-acetyl Semax amidate,” often shortened to NA-Semax, is a chemically modified version of Semax sold widely by research-chemical websites. It is a different molecule. The FDA advisory committee review and the October 2026 HHS notice covered Semax in its free base and acetate forms. CareFirst compounds Semax, not NA-Semax.

Semax and Selank

Semax is often searched alongside Selank, another Russian-developed peptide. Selank is not one of the six peptides covered by the October 2026 HHS notice, and CareFirst does not compound it. Combination “Semax and Selank” sprays sold online are not prepared by licensed pharmacies against a prescription.

“Research Peptides” vs. a Compounding Pharmacy

Search for “buy Semax” and you’ll find many websites selling nasal sprays and powders labeled “for research use only” or “not for human consumption.” Those products are not prepared under pharmacy standards, are not dispensed against a prescription, and are not checked by a pharmacist for your situation.

When you fill a prescription with CareFirst Specialty Pharmacy:

• Your medication is compounded for you, by a licensed pharmacy, from a patient-specific prescription.
• We are a PCAB-accredited 503A compounding pharmacy licensed to ship to all 50 states.
• A pharmacist reviews your prescription and is available to answer questions.
• Our quality processes are documented on our Commitment to Quality page.

Not sure who is actually making the medication you buy online? Read Who actually makes your compounded medication?

How to Get Semax Nasal Spray from CareFirst

1. Talk with your prescriber. They decide whether Semax is appropriate and which strength to prescribe.
2. Send us the prescription. Your prescriber can fax, phone in, or e-prescribe to CareFirst Specialty Pharmacy (Mount Laurel, NJ · NCPDP #3151266). You can also register as a patient or transfer a prescription, and we can contact your prescriber for you.
3. We compound and ship. See How to Order and Shipping Info for timelines and delivery options.

Prescribers: visit our Prescribers page to send scripts or request more information.

Frequently Asked Questions

What is Semax?

Semax is a synthetic seven-amino-acid peptide based on a fragment of the hormone ACTH, with a Pro-Gly-Pro tail added for stability. It was developed in Russia and is usually given as a nasal spray.

What does Semax do?

Animal studies suggest Semax affects brain-derived neurotrophic factor (BDNF) and several neurotransmitter systems. In Russia it has mainly been used in the setting of ischemic stroke. Human evidence outside Russia is limited, and it has not been proven effective for any condition in U.S. trials.

Is Semax FDA approved?

No. Semax is not an FDA-approved drug, and compounded medications are not FDA approved. In July 2026, an FDA advisory committee recommended adding Semax to the list of substances eligible for 503A compounding. On October 28, 2026, HHS issued a notice of enforcement discretion stating that FDA will not pursue legal action against compounding pharmacies and physicians making Semax and five other peptides while that process continues. This is not FDA approval, and the notice is an interim policy that HHS can revise or withdraw.

Is Semax legal in the US?

Semax is not approved in the U.S. Under the October 2026 HHS notice, state-licensed 503A compounding pharmacies may prepare Semax for an individual patient with a valid prescription without facing FDA enforcement action while formal rulemaking continues.

Do I need a prescription for Semax nasal spray?

Yes. We only compound and dispense Semax with a valid, patient-specific prescription.

Is Semax safe?

Published Russian studies report that intranasal Semax was generally well tolerated in the short term, with nasal irritation the most commonly mentioned side effect. Long-term safety has not been established, and FDA staff raised concerns about immune reactions and impurities. Talk with your prescriber about whether it is appropriate for you.

How much Semax should I take?

Your prescriber determines your dose and schedule. Your directions, including the number of sprays and how often to use them, will be on your prescription label.

Is N-acetyl Semax the same as Semax?

No. N-acetyl Semax amidate is a chemically modified version. The 2026 FDA review and HHS notice covered Semax (free base and acetate). CareFirst compounds Semax.

Does Semax nasal spray need to be refrigerated?

Yes. Semax nasal spray must be refrigerated and used within 21 days. Discard any spray left after 21 days. Our pharmacists can answer storage questions at 844.822.7379.

How much does compounded Semax nasal spray cost?

Compounded Semax 0.1% nasal spray is $79.95 for a 10mL bottle. Please contact us for the most current pricing.

References

1. Dolotov OV, et al. Semax, an analog of ACTH(4-10) with cognitive effects, regulates BDNF and trkB expression in the rat hippocampus. Brain Research. 2006;1117(1):54–60.
2. Gusev EI, et al. The efficacy of semax in the treatment of patients at different stages of ischemic stroke. Zh Nevrol Psikhiatr Im S S Korsakova. 2018;118(3 Pt 2):61–68.
3. Ashmarin IP, et al. A nootropic adrenocorticotropin analog 4-10 — Semax (15 years experience in its design and study). Zh Vyssh Nerv Deiat Im I P Pavlova. 1997;47(2):420–430.
4. FDA Pharmacy Compounding Advisory Committee, July 23–24, 2026 meeting briefing documents (Semax free base and Semax acetate).
5. U.S. Department of Health and Human Services notice of enforcement discretion for six compounded peptides, October 28, 2026, as reported by NBC News and STAT.
6. McDermott Will & Schulte. “Bulk-list bound? PCAC backs majority of peptides in two-day public meeting.” July 2026. mcdermottlaw.com

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