Title: Sulfa Allergies: Should You Avoid Other Drugs if You're Allergic to Bactrim? - GoodRx
Headings: The Truth About Sulfa Allergies: Should You Avoid Other Drugs if You’re Allergic to Bactrim?
The Truth About Sulfa Allergies: Should You Avoid Other Drugs if You’re Allergic to Bactrim?
Sharon Orrange, MD, MPH
I was told I had a sulfa allergy. What does that mean?
How do I know if I have a sulfa allergy?
How is Bactrim different from other sulfa drugs?
If I have a sulfa allergy from Bactrim, can I take these other drugs?
To sum it up

Content: Here’s a list of common sulfa drugs that I get asked about a lot from patients who have had allergic reactions to Bactrim. If you’ve had an allergic reaction to Bactrim, you do not need to routinely avoid these medications, even though they are technically sulfonamide drugs. Acetazolamide is a medication used to prevent altitude sickness, and yes, you can take this if you’re allergic to Bactrim. As with any medication, just watch for a rash or any serious side effects. Celecoxib (Celebrex) is an anti-inflammatory drug used for joint pain and arthritis, and yes, you can take it if you’re allergic to Bactrim. Diuretics like bumetanide (Bumex) and furosemide (Lasix) are prescribed for lower extremity edema (swelling) and heart failure. Yep, you can take these. Glimepiride, glipizide, and glyburide are non-insulin medications that treat diabetes type 2. Yep, these are safe if you have a sulfa allergy. Thiazide diuretics like chlorthalidone and hydrochlorothiazide (HCTZ) are used to treat high blood pressure and are fine to take even if you’ve been told you have a sulfa allergy to Bactrim.