Cortagen

What Cortagen does

Cortagen is a synthetic four-amino-acid peptide. Researchers studied nerve repair, brain injury and gene activity mainly in animals and cells. Two patent examples describe human use, but no peer-reviewed clinical trial was located. Human safety and injection doses used online remain unestablished.

• In animal studies, nerve fibers grew 27% faster and carried signals 40% faster with it. (animal)
• In rat studies of brain injury, it improved behavior and some cell-stress markers. (animal)
• A patent describes people with head injuries who had better attention after tiny injections, but nobody checked the results blind. (Studied in a trial)
• One user reported small gains in thinking and visual symptoms; no controlled study has shown a benefit in people. (Reported by users)

Uses in the sources

• People report using it for thinking and visual symptoms. No controlled human benefit has been established. (Reported by users) (source)
• Circulating forum guides propose it for recovery after brain injury; these claims exceed the available clinical evidence. (Reported by users) (source)

Cortagen dosage

Typical reported dose: 50 mcg per nasal spray, used daily

• Fifty micrograms per nasal spray: 50 mcg per spray; daily spray count not established. daily use reported; sprays per day unclear, nasal spray. Reported by users, rare report. Studied in: Adults in online discussions; frequency in the wider community is unknown. (source)
• Forum claim: 5-10 mg alternate days: 5-10 mg every other day. every other day, into muscle. Reported by users, rare report. Studied in: Adults in online discussions; frequency in the wider community is unknown. (source)

These are doses reported in labels, trials or user reports, not a personal plan. Check the source behind each one.

Work out syringe units with the dosing calculator

How to mix Cortagen

Comes as: Community-reported powder vials., User-mixed nasal or sublingual solution..

Mixed with: No diluent or mixing volume was verified from an acceptable noncommercial source..

• A separate user prepared 50 mcg per spray, with other peptides. This does not establish sterility or delivery accuracy.
• No basis was found for a standard 28-day or 30-day mixed-vial life.
• Common vial sizes and mixing volumes remain unverified; no preparation recipe is provided.

Before mixing: No validated compound-specific storage or shelf life was located.

After mixing: No validated refrigerated shelf life or multidose-vial expiry was located.

Cortagen side effects and risks

Reported side effects

• Allergic or injection-related reactions: No compound specific rate is established. These are general risks of unapproved peptide products., serious. Stop use and seek care for a spreading reaction or signs of infection. (source)
• Other short- and long-term effects: No reliable adverse event denominator is available., moderate. Report new symptoms and the exact product, dose, route and timing. (source)
• Scalp tingling: One online user reported tingling; causation and frequency are unknown., mild. New painful zaps, weakness or seizure-like symptoms need clinical assessment. (source)

Stop and get help if

• Trouble breathing, throat swelling, widespread hives or collapse: Call emergency services now; these may be signs of anaphylaxis.
• Fever with confusion, rapid breathing or a very painful spreading injection-site infection: Get emergency care now; severe infection can progress quickly.
• Sudden face droop, one-sided weakness, speech trouble or vision loss: Call emergency services now, even if symptoms improve. These can be stroke signs.
• Chest pressure or pain with shortness of breath, sweating or lightheadedness: Call emergency services now for possible heart attack.
• A seizure lasting over 5 minutes, repeated seizures or trouble breathing afterward: Call emergency services now.

Who should avoid it

• pregnant: Precaution: no reliable pregnancy safety data for this peptide.
• breastfeeding: Precaution: transfer into milk and infant effects are unknown.
• tryingToConceive: Precaution: fertility and early-pregnancy effects are unknown.
• under18: Precaution: no reliable pediatric safety evidence was located.
• kidneyDisease: Clearance and dose adjustment in kidney disease are unknown.
• liverDisease: No liver-disease dose or safety study was located.
• testedAthlete: The 2026 S0 rule is expected to prohibit this unapproved substance at all times.
• seizureDisorder: Precaution: isolated neurons showed electrical effects. Safety in people with seizures has not been established.
• activeCancer: Cancer safety is unknown. Gene-expression and explant-growth experiments do not establish safety in tumors.
• autoimmuneDisease: Immune-cell signaling changes were seen in vitro; clinical effects in autoimmune disease are unknown.

Interactions

• Other brain-directed peptides or peptide mixtures: Co-use is reported, but interaction safety and added benefit have not been established. Cortexin is a different preparation.
• Antiseizure medicines: No human interaction study was located. Nerve-cell electrical effects do not show that it can replace seizure medicines.

Product quality risks

• No independent published market-testing study specific to this peptide was located.
• General peptide warnings describe wrong strength, wrong ingredients and microbial contamination.
• An online semaglutide study found low purity and endotoxin. This does not measure contamination in this peptide.

What to expect

Two patent examples report 27 exposed patients. No peer-reviewed clinical trial located; human donor-cell experiments are not clinical studies.

Key studies

• Patent only: remote head injury: The patent reports better attention after microgram injections, without blinded assessment. (source)
• Patent only: vascular dementia: The patent claims symptom improvement; its percentage does not translate into a clear patient count. (source)
• Rat sciatic-nerve repair: Cortagen increased nerve-fiber growth rate by 27% and conduction speed by 40%. (source)
• Delayed nerve recovery in rats: A follow-up examined nerve function months after injury; the PubMed record has no abstract. (source)
• Chronic brain ischemia in rats: Cortexin and Cortagen improved behavioral and oxidation measures in rats. (source)
• Ischemic preconditioning in rats: Peptide preparations reduced neurological deficits in this animal model. (source)

Cortagen FAQ

• Is Cortagen FDA-approved? No approved product or dose label found. No compound-specific PCAC decision or FDA warning letter was located.
• How do people take it? Nasal spray, daily use reported; sprays per day unclear. About one month reported.. Source: reported by users, not an established dose.
• What's the difference between Cortagen and Pinealon? Cortagen: a four-amino-acid brain peptide backed mainly by animal work and unverified patent claims. Pinealon: a peptide with unproven brain benefits and no established injection dose. Why people pair them: a first-person nasal-blend report combined both for thinking and memory goals.
• Can I take it with Pinealon? A first-person nasal-blend report combined both for thinking and memory goals. No controlled human combination study located. Safety and added benefit are unknown. Source: reported by users. Ask a doctor before combining anything.
• Is it banned in sport? Yes. It is banned in and out of competition (WADA 2026). Inference from the S0 non-approved-substance rule; neither peptide is named individually. No therapeutic approval was located.
• How long does a mixed vial last? No validated refrigerated shelf life or multidose-vial expiry was located.