The morphine sulfate sr was 15 mg and the oxycodone cr is 10mg. When I take 2, 7.5/500 Vicodins that the doctor suggested when the pain is alot then the runny nose subsides somewhat, but does not go away completely. Is the morphine sulphate sr 15 mg stronger than the oxycodone cr 10 mg? Is this the reason for the cold like symptoms (i.e. non-stop runny nose) ?