Well... people's responses to medications can-&-do change over time. So I don't think you can presume that you would necessarily have the same response to your ADD meds now that you had in the past. But also, it can take a while for your body to adjust once you start a med. So, depending on how long you've been back on these med's, perhaps they just need some additional time to "settle in", so to speak. Perhaps the best way of handling this would be to consult with your prescriber regarding what you are experiencing. Best wishes...