How long do the effects last with Ritalin LA?
- Posted:
- 8 Jan 2010 by Chrissygrand
- Topics:
- ritalin, ritalin la, attention deficit hyperactivity disorder (adhd)
Answers (1)
8 Jan 2010
In studies with Ritalin LA and Ritalin tablets in adults, methylphenidate from Ritalin tablets is eliminated from plasma with an average half-life of about 3.5 hours, (range 1.3 - 7.7 hours). In children the average half-life is about 2.5 hours, with a range of about 1.5 - 5.0 hours. The rapid half-life in both children and adults may result in unmeasurable concentrations between the morning and mid-day doses with Ritalin tablets. No accumulation of methylphenidate is expected following multiple once a day oral dosing with Ritalin LA. The half-life of ritalinic acid is about 3-4 hours. I hope this information helps!
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