I was told by my doctor that the 40 mg Ritalin LA (4 times a day) (total 160 mg/day), that I have been taking for over 5 years is too much. I was just given a script for 60 mg/1 daily and this is supposed to work?? I am in trouble because what I have been taking has been working. My dosage had been increased to the 160 mg. over a span of 25 years. I am not sure what I can do to keep the dosage that has been working and I am afraid of the consequences should I have to decrease it.