I believe that Eliquis does cause side effects. For me it was bone, muscle, and joint pain. None of these are listed as side effects but about a week after I stopped taking the Eliquis these pains decreased and now I only have the normal aches and pains of being 76. One doctor suggested that the pain went away because I expected it to do so. Always nice to be told it is all in your head! I don’t care why it went away; just glad it did.