How long does the feeling of tiredness last on this med. my husband has been on this med for two weeks, but also has had a defibrillator,pace maker put in one week ago. His hx is quadruple bypass, copd, chf, emphasyma..none of this being good and only two arteries left working. Any info would be good since today you need to be your own doc. Thanks Maggie b. Wow just reviewed everything so I was misled....thought I could get an answer, which I could for a price. Hmmmm all about making a buck...thanks but no thanks I will research and find my own answers