Hello, this is my first question on here. I suffer from chronic pain living through car wreck that killed three others breaking a bunch of bones in me. A brain virus that made me have to learn to walk and falling a lot and smashing my hips and spine. There is more with shoulders and my knees. My question is I was put on opana ER 20 mg and am liking it. But it has made me weak and off balance and my balance is already messed up. I also have break through pain. What about Oxycontin does it make you loose your balance and weak? This is my first time on a extended release med.