I found a source that had Cabergoline (Dostinex). They sell 1mg 40 tablets, 2mg 20 tablets, or 4mg 32 tablets. I am a little confused, does that mean for example that all 40 tablets total out to be 1mg, and 20 tablets equal out to 2mg, etc? And if so what is the average dosage that should be taken if you want it for blocking progesterone?