Can you please tell me if by taking my regular meds of Lithium 300 mg, 1 in am and 2 in pm. One limictal 100 mg but then for a week adding Methylprednisolone 4mg due to a fall in the shower to prevent swelling as I recently had cervical and lumbar surgeries. I do have colopin and norco as needed (none on this day, in fact the norco in almost a week) as well. However, I had gotten a very bad cold and used Tylenol Cold and Flu for a few days. Could this all have made me drowsy and have slurred speech after using the cold medicince steadily for the day (as prescribed)? I was charged with a DUI, blew a 0 on the breathalizer each time and a urine test was taken, which I know will be clean. I would like to show that while I used very poor judgement, I shouldn t have mixed the Cold meds or steroids without checking with my physciatrist. Thank you!