I Am Trying To Find Out The Excipients For Ampicillin

I am trying to find out the excipients for ampicillin 500 mg -pharma company is Dava by Rada; I have allergies to several binders and fillers - and different pharma companies use different excipients! Pls. help!! I am going crazy with one search after another (Have you even heard of Dava by Rada...?) Thx. for your help
This doesn't even require a physician - just a pharmacist should be able to provide this information - but they rarely do have this simple, basic info. But I need to know what's in it before I start to take it.