KORSUVA vs ZONALON

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 18, 2026·How we rate

Possible drug interaction. KORSUVA and ZONALON 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	KORSUVA	ZONALON
Rating	New	66/100
Pharmacy pays	—	~$4.84 /30
Type	RX	RX
Active ingredient	DIFELIKEFALIN ACETATE	DOXEPIN HYDROCHLORIDE
Manufacturer	Vifor Intl	Mylan
Dosage forms	Injectable	Topical
Drug class	—	Tricyclic Antidepressant
Boxed warning	None	None
Half-life	—	about 8 to 24 hours (average about 17 hours)
Treats	Pruritus	Anxiety Disorders, Depressive Disorder, Atopic Dermatitis

korsuva zonalon

Rating

New

66/100

Pharmacy pays

—

~$4.84 /30

Type

Active ingredient

DIFELIKEFALIN ACETATE

DOXEPIN HYDROCHLORIDE

Manufacturer

Vifor Intl

Mylan

Dosage forms

Injectable

Topical

Drug class

—

Tricyclic Antidepressant

Boxed warning

None

Half-life

—

about 8 to 24 hours (average about 17 hours)

Treats

Pruritus

Anxiety Disorders, Depressive Disorder, Atopic Dermatitis

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Frequently asked questions

What is the difference between Korsuva and Zonalon?

Korsuva contains Difelikefalin Acetate, while Zonalon contains Doxepin Hydrochloride — 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.