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CAYSTON vs CEFADYL

Independent side-by-side comparison.

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

Possible drug interaction. CAYSTON and CEFADYL 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

72/100
New

Pharmacy pays

—
—

Type

RX
RX

Active ingredient

AZTREONAM
CEPHAPIRIN SODIUM

Dosage forms

Kit
Injectable

Drug class

—
—

Boxed warning

None
None

Treats

Cellulitis, Endometritis, Pseudomonas Infections
Escherichia Coli Infections, Klebsiella Infections, Proteus Infections

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Frequently asked questions

What is the difference between Cayston and Cefadyl?

Cayston contains Aztreonam, while Cefadyl contains Cephapirin Sodium — 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.