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Acthar high dose (80 U)

NYU Langone Health · FDA-approved active Small molecule

Acthar is a synthetic adrenocorticotropic hormone (ACTH) that stimulates the adrenal cortex to produce and release cortisol and other corticosteroids.

Acthar is a synthetic adrenocorticotropic hormone (ACTH) that stimulates the adrenal cortex to produce and release cortisol and other corticosteroids. Used for Infantile spasms (West syndrome), Acute exacerbations of multiple sclerosis, Rheumatoid arthritis.

At a glance

Generic nameActhar high dose (80 U)
Also known asRepository Corticotropin Injection
SponsorNYU Langone Health
Drug classACTH analog
TargetMelanocortin-2 receptor (MC2R)
ModalitySmall molecule
Therapeutic areaImmunology / Rheumatology / Neurology
PhaseFDA-approved

Mechanism of action

Acthar binds to melanocortin-2 receptors on adrenocortical cells, triggering the release of endogenous glucocorticoids and mineralocorticoids. This endogenous steroid production provides anti-inflammatory and immunosuppressive effects. The high-dose formulation (80 U) is used for acute exacerbations of conditions requiring rapid corticosteroid elevation.

Approved indications

Common side effects

Key clinical trials

Primary sources

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SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

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