GLEOSTINE vs ZANOSAR

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 20, 2026·How we rate

Possible drug interaction. GLEOSTINE and ZANOSAR 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	GLEOSTINE	ZANOSAR
Rating	70/100	56/100
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	LOMUSTINE	STREPTOZOCIN
Manufacturer	Azurity	Teva
Dosage forms	Capsule	Powder
Drug class	Alkylating Drug	—
Boxed warning	Boxed warning	None
Half-life	about 16 to 48 hours — but note this is the half-life of lomustine's metabolites, not the parent drug	—
Treats	Brain Neoplasms, Colonic Neoplasms, Hodgkin Disease	Hodgkin Disease, Colorectal Neoplasms, Islet Cell Carcinoma

gleostine zanosar

Rating

70/100

56/100

Pharmacy pays

—

Type

Active ingredient

LOMUSTINE

STREPTOZOCIN

Manufacturer

Azurity

Teva

Dosage forms

Capsule

Powder

Drug class

Alkylating Drug

—

Boxed warning

None

Half-life

about 16 to 48 hours — but note this is the half-life of lomustine's metabolites, not the parent drug

—

Treats

Brain Neoplasms, Colonic Neoplasms, Hodgkin Disease

Hodgkin Disease, Colorectal Neoplasms, Islet Cell Carcinoma

Frequently asked questions

Which is better-rated, Gleostine or Zanosar?

By our independent rating, Gleostine scores higher — 3.5 vs 2.8 out of 5 for Zanosar. Ratings are based on FDA regulatory (recall-safety) data.

What is the difference between Gleostine and Zanosar?

Gleostine contains Lomustine, while Zanosar contains Streptozocin — 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.