Does Cefadroxil contain sulfa? i am allergic to sulfa. I'm also homeless with absolutely no money to my name. i get free medications from the government and i am visiting my mother to use her computer. can yu direct me to a website that will answer my question for free?! i really need to know because i am very sick and also in a lot of pain. is there any way you can help me. anything will help. Thank You Heather