BESPONSA vs ELSPAR

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 19, 2026·How we rate

Possible drug interaction. BESPONSA and ELSPAR 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	BESPONSA	ELSPAR
Rating	New	70/100
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	INOTUZUMAB OZOGAMICIN	ASPARAGINASE
Manufacturer	Wyeth Pharms Inc	Merck
Dosage forms	Injectable	Injectable
Drug class	Cd22-Directed Immunoconjugate	—
Boxed warning	Boxed warning	None
Treats	Precursor Cell Lymphoblastic Leukemia-Lymphoma	Cholelithiasis, Lymphoma, Precursor Cell Lymphoblastic Leukemia-Lymphoma

besponsa elspar

Rating

New

70/100

Pharmacy pays

—

Type

Active ingredient

INOTUZUMAB OZOGAMICIN

ASPARAGINASE

Manufacturer

Wyeth Pharms Inc

Merck

Dosage forms

Injectable

Drug class

Cd22-Directed Immunoconjugate

—

Boxed warning

None

Treats

Precursor Cell Lymphoblastic Leukemia-Lymphoma

Cholelithiasis, Lymphoma, Precursor Cell Lymphoblastic Leukemia-Lymphoma

Frequently asked questions

What is the difference between Besponsa and Elspar?

Besponsa contains Inotuzumab Ozogamicin, while Elspar contains Asparaginase — 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.