Cabergoline
"I have a macro non functioning pituitary adenoma which is causing compression of my pituirtary stalk "stalk effect" which causes increases in prolactin  blood levels. My endo put me on this to reduce the 'stalk effect' I'm suffering from my macro adenoma. My crushing headaches have weakened, the lactating stopped and my period is back on schedule. However the side effects are extreme. They last about 5 days after taking my dose for the week. The nausea is unbearable, causing me to take a drug for that at $104/mth as I spent all day vomiting. I have what I describe as a feeling of being drunk and hungover all at once. I can't drive, but for two days a week. So tired, dizzy, weak, low blood pressure, flu like. I am hoping for surgery soon, but I live so remotely logistics make it difficult, as I'm 13 hours from the specialists. I rated a 5 as the headaches were horrid, but so are the side effects."