I got an odd problem...I switch back and forth between 10mg and 15 mg adderall cuz of my tolerance. I get the generic kind: amphetamine salts cuz its $160 cheaper a month. But majority of the time when I take the 10mg I think Im not absorbing it because I feel nothing from it I could fall asleep 1 hour after taking it so I would take another 10mg pill and then another and there will still be no effect, and this is when I avoid intake of acidic foods and beverages.
When i break a 15mg pill in half and only take half, the half a pill works 45min after intake. So I know its not a tolerance issue since 2x10mg has no effect and 0.5x15mg has effect.
So...would I absorb 10mg better if I crush it up?

yeah i was taking 15mg and then i tried to wean myself off them because i was afraid of building tolerance and afraid of amphetamine addiction, so my doctor put me own to 10mg for a lil bit. it did bring my tolerance down for awhile but my tolerance has built up again. now he just prescribes 15mg again 3 times a day but told me i can take them im halves