CAYSTON vs PENETREX

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated October 8, 2026·How we rate

Possible drug interaction. CAYSTON and PENETREX 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	PENETREX
Rating	72/100	70/100
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	AZTREONAM	ENOXACIN
Manufacturer	Gilead Sciences Inc	Sanofi Aventis US
Dosage forms	Kit	Tablet
Drug class	—	—
Boxed warning	None	None
Treats	Cellulitis, Endometritis, Pseudomonas Infections	Escherichia Coli Infections, Gonorrhea, Haemophilus Infections

cayston penetrex

Rating

72/100

70/100

Pharmacy pays

—

Type

Active ingredient

AZTREONAM

ENOXACIN

Manufacturer

Gilead Sciences Inc

Sanofi Aventis US

Dosage forms

Kit

Tablet

Drug class

—

Boxed warning

None

Treats

Cellulitis, Endometritis, Pseudomonas Infections

Escherichia Coli Infections, Gonorrhea, Haemophilus Infections

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Frequently asked questions

Which is better-rated, Cayston or Penetrex?

By our independent rating, Cayston scores higher — 3.6 vs 3.5 out of 5 for Penetrex. Ratings are based on FDA regulatory (recall-safety) data.

What is the difference between Cayston and Penetrex?

Cayston contains Aztreonam, while Penetrex contains Enoxacin — 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.