Peptide Academy · Growth

ACTH 1-39

Also known as Adrenocorticotropic hormone

Educational research summary, not medical advice. Many compounds here are not approved for human use. Talk to a licensed clinician before making any health decision.

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What is ACTH 1-39?

The full-length pituitary hormone that drives cortisol production, used clinically for infantile spasms and MS flares.

How it works

Agonizes MC2R on the adrenal cortex, stimulating cortisol and adrenal androgen synthesis and release.

Published research

Approved clinical preparations (Acthar gel) for specific inflammatory/neurological indications

Half-life

~10–15 minutes

Cautions

Prescription-only; raises cortisol — immunosuppression, hypertension and glucose effects.

Side effects & fixes

Common side effects

—Human side-effect data is limited or absent for this compound
—Injection-site redness, itching or soreness is the most commonly reported effect for injected research peptides

Histamine reactions

Possible at the injection site, as with most injected peptides.

Common fixes

Rotate injection sites (abdomen, thighs, upper arms) and stay at least an inch from the last spot.
Let the alcohol swab dry fully, let the solution reach room temperature, and inject slowly with a fresh needle.
A cold compress for 5–10 minutes eases a red or itchy welt; it should fade within a day.
For mild itching, redness or flushing, a non-drowsy over-the-counter antihistamine (such as cetirizine or loratadine) is commonly used — check with a pharmacist first, especially if you take other medicines.
Start low, change one thing at a time, and keep a log of how you feel.

Stop and get help

Any unexpected or severe symptom — stop and contact a doctor.
Stop and get emergency help for swelling of the face, lips, tongue or throat, trouble breathing, widespread hives, chest pain or fainting.

Basis: Limited data; general experience with injected peptides. Educational only, not medical advice.

Medication concerns

Theoretical: no human interaction studies

Diabetes medicines
ACTH raises cortisol, which raises blood sugar; diabetes doses may need adjusting.
Steroids (prednisone, hydrocortisone)
Effects add up: more fluid retention, mood, sleep and blood sugar effects.
NSAIDs (ibuprofen, naproxen) and blood thinners
High cortisol raises the risk of stomach ulcers and bleeding with these.
Blood pressure medicines and diuretics
Cortisol can raise blood pressure and lower potassium.
Live vaccines
High cortisol can blunt the immune response; ask before any live vaccine.
Everything else you take, including supplements
Bring a full list of medicines and supplements to your pharmacist or clinician before starting.

Basis: No interaction studies for research ACTH 1-39; concerns follow from its cortisol-raising effect, as described for prescription corticotropin. Educational only, not medical advice. Never stop or change a prescribed medicine without your prescriber.

Protocols & tracking are members-only

Members see the research protocols for ACTH 1-39, plan schedules, track every dose and vial, and ask the AI Advisor questions with cited sources. Try every Researcher feature free for 7 days, no card needed.

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