I'm too currently taking 50mg (dropped from 75mg for 2 weeks due to elevated liver enzymes). As Crabby has stated, it's important to keep up with the blood work- it's what showed my elevated ALT for the 2nd time now. Having said that, this drug seems to be the 'one' for me. BM's are reduced by over half, and the cramping and bleeding almost stopped now. At first, and every time I increased my dose, I did suffer with nausea (gastro gave me something to combat this), but that soon subsided as my body began to tolerate the drug. Just bear in mind, that because the information leaflet lists a whole load of side effects, doesn't necessarily mean that you may suffer from them.
Hope this drug works as well for you- surgery was my next step had this not done the trick! Good luck,
Andrea