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Dr.Anil, Doctor
Category: Medical
Satisfied Customers: 9151
Experience:  M.B.B.S.M.D with over 30 years of experience in this medical field.
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I am allergic to sulfa based meds, in particular the antibiotic

Resolved Question:

I am allergic to sulfa based meds, in particular the antibiotic Bactrim. I am having a CT-Scan this morning. I just noticed the contrast they gave me to drink is Barium Sulfate. Is it safe or am I in fast need of something else?
Submitted: 6 years ago.
Category: Medical
Expert:  Dr.Anil replied 6 years ago.
Welcome to and thanks for your question.
Barium sulfate is unrelated to other sulfa drugs.

Sulfa allergy is not a contraindication for CT scan

For further reading -

So there is no problem to ingest barium sulfate regardless of allergy.

I hope this helps.

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