I know I tested as allergic to 'sulfa' drugs back a couple of decades -- and based on the couple times I've tried it, MSM (aka 'organic sulfur') seems to make me sick too (which lead me to conclude that all sulphur-ish compounds might be best fer me to avoid...)

I proudly raise my hand and say anything with sulfer in it gets me into trouble. Like for instance those lovely COX-2 drugs Celebrex, Vioxx, Bextra, and whatever the other one is...grrrrrrrrrrrrrrrr cause it would be nice to have something that might help a bit more with the joint pain, but alas it is not meant to be <sigh> . The thing is I have had to remind more than one doctor that I am allergic to it when they start prescribing meds (even though they were staring at my chart as they attempted to do so-IDIOTS). Thankfully I have some better docs now, but I wonder is there a list somewhere of all the medications containing sulfer/sulfa. It would be good to have in hand- I only caught those old docs b/c I happened to know something about the particular med they were trying to prescribe.