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ISOPTO CETAMIDE vs THERMAZENE

Independent side-by-side comparison.

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

Possible drug interaction. ISOPTO CETAMIDE and THERMAZENE 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

New
New

Pharmacy pays

$0.11 /g
$0.25 /g

Type

RX
RX

Active ingredient

SULFACETAMIDE SODIUM
SILVER SULFADIAZINE

Dosage forms

Drops
Topical

Drug class

Sulfonamide Antibacterial
Sulfonamide Antibacterial

Boxed warning

None
None

Treats

Corneal Ulcer, Ear Diseases, Seborrheic Dermatitis
Wound Infection

Frequently asked questions

Which is cheaper, Isopto Cetamide or Thermazene?

Isopto Cetamide costs pharmacies less to acquire — about $0.11 vs $0.25 per gm, 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 Isopto Cetamide and Thermazene?

Isopto Cetamide contains Sulfacetamide Sodium, while Thermazene contains Silver Sulfadiazine — 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.