Sulfa allergy -Meloxicam

Hey guys, had a patient with sulfa/sulfonamides allergy who I dispensed Meloxicam.
Pt states that sulfa is in meloxicam structure so she is having anaphylactic reaction due to taking Meloxicam 8 hours earlier
I checked Lexicom/Clinical pharmacology, and I just cant find it being as contraindication...
Of course, pt is threatening to go to a hospital/sue/etc...
Am I overlooking it as a contraindication? Can you guys double check me?

Source: Student Doctor Network - January 19, 2020 Category: Universities & Medical Training Authors: jmail Tags: Pharmacy Source Type: forums