Posted by brender on August 22, 2003, at 14:12:41
I was wondering if anyone knew what the approximate equivalent doses are between the different kinds of stimulants, or is that even a calculation one could make? I was taking 20mg adderall XR once a day. It was OK--for a few hours after it first started working (maybe three) I would be able to think clearly, with more focus and concentration than I was used to. Then I would think about the same as unmedicated for a couple hours, maybe a little better. But then I would crash--one medium short crash around 3-4PM with a little rebound and a then hardcore one around 7. Both with intense sudden exhaustion and the second one accompanied by pretty solid depression/anxiety, which would last the rest of the evening. Then, right when I should be going to sleep...rebound, and I'm up until 3:00AM. At another point I had been on 25mg adderall XR and that was clearly too high--when it was at it's peak I became zombie-like and so focused I couldn't remember anything except the exact thing I was looking at. I couldn't remember the beginning of the sentence by the time I got to the middle, for example. But I made it to the end of the day without a crash and could go to sleep when I needed to.
Anyway, I described those crashes to my doctor and he thought maybe I would do better on just dexedrine. He prescribed 15mg twice a day (once in the morning and once at noon.) The pharmacy gave me the generic version of dextroamphetamine ER, which I assume is equivalent to the spanules version? Anyway, I was wondering if now that I am taking 30mg total of stimulant it means I am taking 50% more than I was taking before (20mg adderallXR), or if, because adderall is a combo of dex and ritalin, those two dosages are roughly equivalent. Or am I really taking less?
I feel pretty spacey on my second day of it, which may just be a side effect that will go away. The problem is I feel spacey when I take too much or too little of a stimulant, in my experience, so if this isn't the right dosage I don't know in which direction I should go.
Is anyone familiar with this, or has made a similar switch? What doses seemed equivalent to you?