View Full Version : Concerta/Dexedrine Spansules dosing equivalents


Babylon5
09-29-14, 05:46 PM
How many mg. of Dexedrine Spansules is equivalent to 72 mg. of Concerta?

sarahsweets
10-01-14, 04:20 AM
They aren't equivalent. Concerta is methylphenidate and dexedrine is an amphetamine.

dag nab it
10-01-14, 09:13 AM
Figuring this out is a process. First, I lifted this from another post:

Concerta Dose for People Who Have Been on Methylphenidate Previous Methylphenidate Dose Concerta Starting Dose
5 mg two or three times a day 18 mg once daily
10 mg two or three times a day 36 mg once daily
15 mg two or three times a day 54 mg once daily
20 mg two or three times a day 72 mg once daily
http://www.addforums.com/forums/showthread.php?t=70499

Thus, 72 mg Concerta equals at most about 60 mg methylphenidate IR (immediate release).

Converting from methylphenidate to dextroamphetamine, roughly is 2-to-1 ratio. I.e., 60 mg methylphenidate would be around 30 mg dextroamphetamine. However, the medications do not work the same and dex tends to last longer. It's better to start lower and adjust over several weeks.

Babylon5
10-02-14, 03:09 PM
Figuring this out is a process. First, I lifted this from another post:

Concerta Dose for People Who Have Been on Methylphenidate Previous Methylphenidate Dose Concerta Starting Dose
5 mg two or three times a day 18 mg once daily
10 mg two or three times a day 36 mg once daily
15 mg two or three times a day 54 mg once daily
20 mg two or three times a day 72 mg once daily
http://www.addforums.com/forums/showthread.php?t=70499

Thus, 72 mg Concerta equals at most about 60 mg methylphenidate IR (immediate release).

Converting from methylphenidate to dextroamphetamine, roughly is 2-to-1 ratio. I.e., 60 mg methylphenidate would be around 30 mg dextroamphetamine. However, the medications do not work the same and dex tends to last longer. It's better to start lower and adjust over several weeks.

Oh ok, thanks.