Your welcome, If you cleaned your room it definitely worked hahaha, I think the modified release pills release the drug for about 12 hours but don't quote me on that one coz it might be 24 hours. 1 tablet would not be very strong but it definitely would've gave you energy. If it says modified relaease on the box, then its modified release. (modified, extended, continuous release all basically mean the same bullshit.) My personal opinion on Instant release vs Extended release is extended is better because they come in higher doses, the modified release is easily removed (hence crushing the little balls). So you are getting more bang for your buck rather than crushing and railing 5 or 6 10mg ir pills which is the equivalent of putting a sandpit up your nose, just crack open two 40mg caps snort those suckers and get way higher and less shit to snort. As for therapeutically which is better that's upto you. I don't use stimulants therapeutically so I cant speculate in that area im sorry mate.