I recently *attempted* to extract 10mg of ritalin from a daytrana patch and after taking this, I felt major effects for only about 30 minutes. Would this be normal for a 10mg dosage of ritalin? I have little to no tolerance, but I do have experience with amphetamines. BTW, what I did was place the daytrana patch in water overnight and drank that water in the morning. It seemed as if most of what was on the patch had gone into the water. I'm asking this question because im not sure if my extraction really worked.