hyperprolactinemia
"I was prescribed Bromocriptine, as it seems to be the only available medication for treatment of high prolactin levels caused by my pituitary brain tumor. Unfortunately within a couple of weeks I was unable to stay awake for any length of time, even at the lowest dose possible. Although my prolactin levels did come down briefly and I had one menstrual period after 6 weeks, I had to stop taking the medication because of the Severe Chronic Fatigue caused by the bromocriptine.  
I have since tried it 3 times in the past 5 years out of desperation and have had the same result each time. I simply can't function within 2 weeks of starting the medication. I'm desperate to have a semblance of my life back and available medications are limited at best!"