Drug Induced Lupus

I have been taking a medication for a couple of years and saw it on a list from Lupus Alliance of America. Has anyone ever been tested for this? The medication is metoprolol,generic for lopressor. I'm not trying to make an excuse for having lupus. But if there are certain meds. out there that can bring on lupus,you would think doctors would let you know and make sure the medicine is'nt making you sick. I can't be taken off this med. I have to take it for the rest of my life. Any info will be appreciated. Take care and God bless.