I Bought A Vitamin That Contains Selenium In It. I

I bought a vitamin that contains selenium in it. I am severly alergic to sulfa. Can I take this vitamin? I just want to be sure. One time I took ginko-bilboa (?) and I had a reaction to it. On the ingredients it did not say sulfa on it, but I found out in the sterilization process they used sulfa. So just want to make sure I can take a vitamin with selenium in it. Tks