takes the stuff everyday so probably is not the best canidate to tell the stuff apart, but was not able to tell any difference between the orange and the pink adderalls (both IR). Whichever the orange flavored ones were, were the ones. SWIM had a supply of both orange and pink and tried to take them on alternate days and really could not tell any difference.
However, less tolerant users or users who take varying doses may very well be able to tell a difference as the law states simpily that peak plasma concentrations have to be +/- a certain %... forget the exact numbers but there is a .pdf somewhere on DF so really wouldn't they be able to be able to make a considerably different tablet (compared to most other medications) considering there are so many different salts?
As long as it met the plasma concentrations specified in the guidelines for generic versions of medications, one would think they could be quite different. Someone like SWIM who takes her medicine everyday at the same dose and is "adjusted" to the medication at that dose would be less likely to tell any difference, however recreation or irregular users would be more likely to tell the difference. But as far as the salts go, I think it breaks down to something like 75% d-AMP base and 25% l-AMP base.
SWIM takes the pink generic IR ones and one dose upon waking and a second about 5-6 hours later lasts all day. They are a soft tablet and crumble very easily. But anyways, the different salts supposedly have slightly different durations of actions/onsets (SWIM thinks so anyways) so they make adderall
last slightly longer than it would otherwise... SWIM has no experience with any other amphetamine
so doesn't really know.
EDIT: Here is the link... http://www.drugs-forum.com/forum/loc...tid=69&id=4835
It basically shows that plasma concentrations must fall between 80-125% of the brand name drug
... however this must be so on a 90% confidence interval. I really don't want to think about statistics right now but given the confidence interval of 90% the range is in reality much smaller than 80-125%