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A member asked:
Please tell me, could a lab tell the difference between concerta and focalin (dexmethylphenidate) xr in a urine sample?
A doctor has provided 1 answer
Depends on tests: Kenneth G answered 8 months ago It all depends on the test they use. With a basic screen, amphetamine like drugs will look like the same things. If they do more sophisticated analysis, that's not the case. Now, the difference between Focalin (dexmethylphenidate) and Concerta is minimal. They are the same molecule, but Focalin (dexmethylphenidate) is the right-handed "dextro" isomer of methylphenidate vs Concerta which is a "racemic" mixture of left and right handed isomers. The dextro is considered to be the most active. If you're on Concerta, the urinary metabolite is d,l ritalinic acid. With focalin, (dexmethylphenidate) just d-ritalinic acid.
Answered 6/25/2014
4k views
Related Questions
A member asked:
Been on focalin (dexmethylphenidate) 10mg, once a day, for 2 days now( yesterday & today)... Can't tell any difference? When will I be able to tell a difference?
10 doctors weighed in across 4 answers
A member asked:
What the difference between focalin (dexmethylphenidate) IR and Adderall IR? Which is a better drug for ADD? I only like to take them mon-fri not weekends My dr likes foca
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A member asked:
I got a focalin (dexmethylphenidate) XR 20mg and used to taking adderall. What is the difference between the two?
A doctor has provided 1 answer
A member asked:
Is there a difference between focalin (dexmethylphenidate) XR and Adderall xr?
A doctor has provided 1 answer
A member asked:
Whats the difference between dosage? Focalin (dexmethylphenidate) 15 mg compared to Adderall 15. What's the differences between the effects?
A doctor has provided 1 answer
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