My wife just had cardiac catheterization with a stent put in one week ago. She was prescribed metoprolol tartrate 50 mg to take twice a day. Also prasugrel 10 mg and rosuvastatin calcium 20 mg. Her side effects have been drowsiness, trouble sleeping, depression and mood swings. After 3 days doctor told her to stop taking metoprolol which she did. 4 days later all side effects are still there. I honestly thought she was having a breakdown. I read that side effects could last up to a week? Her cardiologist cannot see her until Oct. 24 - two more weeks. We tried to get that sooner but to no avail. Its scary.