Dexamphetamine's half life is about 4-6 hours with higher blood pressure and pulse ratio TO euphoria (body load).
DexMETHamphetamine's half life is about 12 hours with minimal body load and is highly euphoric and generally stronger per mg.
take Dex. if you wish to remain less addicted to amphetamines.
... but Chipper has completely sold out to ice and loves it. LOVES IT.
how do i keep sane ? well, unlike Dex., i use about 100-200 mg. once per week. with Dex. you can use smaller amounts for longer but you still get general dehydration with both.
i also offset neurotoxicity with daily doses of 10 mg. Olanzapine, double or triple dosing at the crappy end of the run to help promote sleep.
note - half of one point of ice (50 mg.) will keep me up for at least 24+ hours, if it's really good.