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Dr. Chip
Dr. Chip, Board Certified Physician
Category: Medical
Satisfied Customers: 36164
Experience:  20 yrs. in practice, includinge surgery, general medicine, addiction medicine and pain.
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How long does it take USP to take effect?

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how long does it take for Ritalin USP to take effect? what is the difference between Ritalin USP and Ritalin LA?
How long does it have effect and what is the recommended daily dosage?

Hi. We can continue after this if you'd like

Ritalin would usually take effect beginning about one hour after it was taken.

Ritalin LA is an extended release form which would still take effect in about an hour but would then be slowly released into the blood stream to keep a constant level.

The dosage for Ritalin is usually 10mg to 20 mg two or three times a day and for Ritalin LA it would be 20mg to 60 mg once a day.

Ritalin would have an effect for about three to four hours while Ritalin LA is designed to work continuously for 24 hours


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Customer: replied 2 years ago.

ok thank you. What is Ritalin USP? is it an extended release tablet?

Customer: replied 2 years ago.

Ok I still do not understand what the Ritalin USP is?

No its not extended release--just simple Ritalin The USP stands for United States Pharmacopeia which is just a certifying quality agency
Customer: replied 2 years ago.

Ok. Thank you for your help.

My pleasure--any time