The safety of sulfonamide nonantibiotics is unclear in patients with prior allergic reactions to sulfonamide antibiotics. We conducted a retrospective cohort study using the General Practice Resear ...

And while relatively rare, opioid cross-reactivity can occur. It means that if you’re allergic to one opioid, there is a risk of experiencing a similar allergic reaction to other opioids.

To the Editor: The article by Strom et al. (Oct. 23 issue)1 suffers from the classic shortcomings of retrospective studies of adverse drug reactions and particularly from the use of the term ...

If you've had a reaction to sulfa antibiotic, you've reacted to sulfonamide. There's a large number of drugs that contain sulfa that do not cross react with these sulfonamide antibiotics. In the ...

Some coconut allergies are not a "true" allergy but rather a cross-reactive response to other foods you are allergic to, such as almonds, walnuts, and other tree nuts.

This reader comments on a recently posted "Ask the Expert" column in reply to a question about penicillin allergy and cross-reactivity with sulfa drugs.

Several charts have been published that can help practitioners choose antibiotics based on similarities of their side chains to minimize the risks of cross-reactivity. Safe for most patients ...

Mold Allergy vs. Penicillin Allergy Having a Penicillium mold allergy doesn't mean that you're allergic to the antibiotic penicillin. While penicillin was indeed originally developed from ...

The other important message that I wanted to discuss is relating to cross-reactivity between penicillin and other antibiotics.

The vast majority of people who think they have a penicillin allergy don't have it anymore — or never did, doctors say. Now there's a trend toward "delabeling" those allergies.