migraine prevention
"I was given this drug for complex migraines and the morning after the first dose resulted in altered consciousness and anisocoria where the left eye was dilated and less reactive to light than the other eye. I was promptly told to discontinue the drug by my doctor and have ever since had more blurred vision - slight double vision at times - and a frequent manifestation of the conditions mentioned. I've had people mention the anisocoria many times, always the same effect."