Prednisolone
postoperative ocular inflammation
"On this for cystoid macular edema after cataract surgery for 21 days. After 24 hrs I had a severe headache in the occipital area which increased 4 fold daily to the point of nausea, severe nausea, then 3 days of vomiting prior to winding up in the ER for cardiac. After 5 hrs. of testing FORTUNATELY it was not a heart attack. I knew something was up from day one (former pharmacy worker) with the side effects. The day after I stopped the drops no headache & other symptoms vanished!! Did research and the drug had interaction with my Diltiazem 240mg ER I was taking for HBP.  What happened was the PredForte drop was magnified 4X by the effect with the interaction with my script. I'm telling you folks ALWAYS keep your Pharmacist in the loop."