CAYSTON vs DORIBAX

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 23, 2026·How we rate

Possible drug interaction. CAYSTON and DORIBAX 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	CAYSTON	DORIBAX
Rating	70/100	70/100
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	AZTREONAM	DORIPENEM
Manufacturer	Gilead Sciences Inc	Shionogi
Dosage forms	Kit	Injectable
Drug class	—	—
Boxed warning	None	None
Treats	Cellulitis, Endometritis, Pseudomonas Infections	Urinary Tract Infections, Intraabdominal Infections

cayston doribax

Rating

70/100

Pharmacy pays

—

Type

Active ingredient

AZTREONAM

DORIPENEM

Manufacturer

Gilead Sciences Inc

Shionogi

Dosage forms

Kit

Injectable

Drug class

—

Boxed warning

None

Treats

Cellulitis, Endometritis, Pseudomonas Infections

Urinary Tract Infections, Intraabdominal Infections

Get caystonhigher-rated option

Advertising disclosure: Some links are affiliate links. We may earn a commission at no extra cost to you. This never affects our independent ratings.

Get treatment online

Licensed online providers — consult & get prescribed if eligible.

SesameCompare online visit prices

Frequently asked questions

Which is better-rated, Cayston or Doribax?

Cayston and Doribax are tied at 3.5 out of 5 by our independent rating.

What is the difference between Cayston and Doribax?

Cayston contains Aztreonam, while Doribax contains Doripenem — 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.