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SIROLIMUS vs ZORTRESS

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 21, 2026·How we rate

Possible drug interaction. SIROLIMUS and ZORTRESS 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.

Rating

66/100
70/100

Pharmacy pays

~$48.61 /30
~$229.16 /30

Type

RX
RX

Active ingredient

SIROLIMUS
EVEROLIMUS

Manufacturer

Dosage forms

Solution
Tablet

Drug class

Kinase Inhibitor
Kinase Inhibitor

Half-life

about 30 hours (mean terminal elimination half-life)

Treats

Lymphangioleiomyomatosis, Perivascular Epithelioid Cell Neoplasms

Frequently asked questions

Which is better-rated, Sirolimus or Zortress?

By our independent rating, Zortress scores higher — 3.5 vs 3.3 out of 5 for Sirolimus. Ratings are based on FDA regulatory (recall-safety) data.

Which is cheaper, Sirolimus or Zortress?

Sirolimus costs pharmacies less to acquire — about $48.61 vs $229.16 for a 30-count supply, per the CMS NADAC survey. That gap is in the pharmacy's cost of goods, not necessarily in what you pay: your price is set afterwards by your insurer and the pharmacy.

What is the difference between Sirolimus and Zortress?

Sirolimus contains Sirolimus, while Zortress contains Everolimus — 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.