ACTHAR GEL (AUTOINJECTOR) vs CORTROSYN

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 12, 2026·How we rate

Possible drug interaction. ACTHAR GEL (AUTOINJECTOR) and CORTROSYN are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

Attribute	ACTHAR GEL (AUTOINJECTOR)	CORTROSYN
Rating	New	70/100
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	CORTICOTROPIN	COSYNTROPIN
Manufacturer	Mallinckrodt Ireland	Amphastar Pharms Inc
Dosage forms	Injectable	Injectable
Drug class	Adrenocorticotropic Hormone	Adrenocorticotropic Hormone
Boxed warning	None	None
Treats	Collagen Diseases, Erythema Multiforme, Multiple Sclerosis	—

acthar gel (autoinjector)cortrosyn

Rating

New

70/100

Pharmacy pays

—

Type

Active ingredient

CORTICOTROPIN

COSYNTROPIN

Manufacturer

Mallinckrodt Ireland

Amphastar Pharms Inc

Dosage forms

Injectable

Drug class

Adrenocorticotropic Hormone

Boxed warning

None

Treats

Collagen Diseases, Erythema Multiforme, Multiple Sclerosis

—

Frequently asked questions

What is the difference between Acthar Gel (Autoinjector) and Cortrosyn?

Acthar Gel (Autoinjector) contains Corticotropin, while Cortrosyn contains Cosyntropin — they have different active ingredients.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.