I'm a 64 yr old female who just got a heart stent in my AUD 5 weeks ago. I'm was giving Plavix and Crestro, . Im. so weak and tired all the time no energy at all. I ask the doctor to change the satin crestro which I just found out it suppose to be the best satin. I thought it was that which was causing my tiredness. so I beg Dr. to ..change it to Zocor but I'm still feeling the same... the only thing different is fewer muscle aches. My colorestral isn't that high but was told I must take both for a year. How long does this tiredness last?