My husband was diagnosed with a viral URI on Saturday. Those symptoms have subsided. He took his cough syrup with codeine in it last night & this am had to take benadryl because of itching (he took 50 mg benadryl). This evening around 1700, he was having blurry vision, he is very weak, he states her feels "loopy." I had him eat something, an hr later he felt the same. We went to the walk in, his assessment seemed fine with the exception of his BP a little elevated, it was 144/88. They sent us home thinking maybe he still had some benadryl in his system. I don't agree. He is 6'1.5" & weigh 207 lbs, he isn't small. Any suggestions?