I need to have the capsule cam, endoscopy done but the GI specialist keeps wanting me to ingest things i'm allergic to or are toxic to me. The first was CT w/ barium contrast after telling him i can't ingest barium he then wanted me to take a Patency capsule that dissolves. Luckily i've learned to investigate everything as it not only releases barium but also lactose! He was told I was borne intolerant. Now he wants me to take OMNIPAQUE 300 which is another thing I can not take after reading their warnings. Is there a nontoxic screening I can do for the preliminary because they won't do the capsule cam unless i get screened for impingements first and for good reason.