hey, dude...May i ask about the ceiling effect of vyvanse? I learnt it's a prodrug, needs to be converted to dextroamphetamine (through the l-lysine mechanism) and probably absorb 70mg at max (I mean, at once). but there are guys here who are taking 150, 250mg of vyvanse, spreading the dosages...how they do that? they wait for the peak plasma concentration (4-5 hours) to peak, then take another 70mg and so on? or the add sodium bicarbonate? I don't know, man...I can't stand ritalin, that stuff raises glutamate and give me serious seizures, while vyvanse (according from my personal experience and what I read) do not relase glutamate that way, thus does not causing NMDA storm because of the firing rate methylphenidate provokes... ​ thank you.