^ Not really, as 30mg can feel like at least twice as much, and twice as long when using the baking soda method.
Baking soda increases absorption, and inhibits excretion of (ANY) drug of the amphetamine class.
It's too easy not to try for yourself, it will blow you away. 2 grams 30mins before dosing, and 1 gram 30mins after dosing, you will be set.
It's a known thing. Google it. It's even on the prescription information when you get it.
I assume this baking soda 'potentiation' is strictly for simple P.O. administration (oral). Surely, insufflation & even parachuting- (both avoiding first pass hepatic metabolism?)- is covered extensively elsewhere as yet another distinct method of potentiation.