Posted by alohashirt on May 22, 2005, at 14:46:27
In reply to concerta vs ritalin SR, posted by yesac on May 22, 2005, at 10:15:58
> Does anyone know if there a difference between Ritalin SR, Ritalin LA, and Concerta?
Concerta uses a very sophisticated extended release technology that ensures that the plasma concentration follows a desired path over a 12 hour period. The path has a spike at first hour, a second spike and increasing concentration after four or five hours. It does this so as to avoid the side effects of a sudden reduction in concentration.
I believe that Ritalin LA may use a similar older technology to Metadate CD. Metadate CD has a more noticeable dual peak feeling and its obvious when it wears off. Concerta is longer acting (noticeable for 8 hours, effective to some degree for 12) and much more expensive.
poster:alohashirt
thread:500940
URL: http://www.dr-bob.org/babble/20050521/msgs/501261.html