After 6 months of waiting to get our hands on the new FDA approved drug Zytiga, we finally did. Long story but Tues., 6/21 my husband took his first dose. He takes 4, 250mg, pills each morning along with Prednisone. Today is day 6 and he is having major body aches, flu-like symptoms, which we understand is a side effect. We will go to oncologist on Thursday for blood work to check liver, psa, etc. and maybe get an idea of how this new drug is effecting him. Obviously, we haven't been on it long enough to give you very much insight but pills verses chemical chemo is a big plus. He handled all the chemos extremely well so we expected this one to be well tolerated but so far it's not letting him feel very good. We, too, would love to hear from anyone else presently taking this drug.