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PURINETHOL vs ZYDELIG

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated October 7, 2026·How we rate

Possible drug interaction. PURINETHOL and ZYDELIG 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.

purinetholzydelig

Rating

72/100
72/100

Pharmacy pays

~$30.33 /30
—

Type

RX
RX

Active ingredient

MERCAPTOPURINE
IDELALISIB

Manufacturer

Stason Pharms
Gilead Sciences Inc

Dosage forms

Tablet
Tablet

Drug class

—
—

Boxed warning

None
None

Treats

Non-Hodgkin Lymphoma, B-Cell Chronic Lymphocytic Leukemia, Precursor Cell Lymphoblastic Leukemia-Lymphoma
Lymphoid Leukemia, Non-Hodgkin Lymphoma

Frequently asked questions

Which is better-rated, Purinethol or Zydelig?

Purinethol and Zydelig are tied at 3.6 out of 5 by our independent rating.

What is the difference between Purinethol and Zydelig?

Purinethol contains Mercaptopurine, while Zydelig contains Idelalisib — 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.