True, 16 hours was over the top. I think my concerta bottle (methylphenidate, same ingredient as ritalin but extended release) says something around 12 hours.

True, 16 hours was over the top. I think my concerta bottle (methylphenidate, same ingredient as ritalin but extended release) says something around 12 hours. My point however was that if you take medication which can keep you awake for X hours less than X hours before bed, you could have a bad time. > Occasionally I'd even get the side effect of making me drowsy, and I had to take a nap right there. I've read about this, for some taking ritalin actually helps them sleep since it makes the brain shut up and be quiet, instead of racing all the time