... experiencing achilles tendon pain and muscle aches near my knee caps when I was trying to sit down. So I immediately stopped the medicine. However, I have had other side effects even after I stopped. Bones on my legs, arms, and even my spine have hurt. Even my breast bone, and ribs sometimes hurt. The pain comes and goes. I even have muscle pain sometimes on my arms, legs, and back. I went to the emergency and had my blood tested and the doctor said nothing is abnormal. The only time I don't feel any pain is when I sleep. I feel like there is something wrong, since this is now the 3rd week, and the pain hasn't disappeared. So I wanted to know, if it can damage any nerves or veins or something? And is it possible the side effects last this long???