-Sorry for the bump-Stupid cell phone!SWIM wonders also on something similar. SWIM has ADHD and street meth/ice has saved him from a suicidal depression. So for some days SWIM will be taking one oral dose in the morning of some mgs disolved in water, just as soon the alarm rings. Then SWIM will wait for the magic. Do you think adding the calcium carbonate or the sodium bicarbonate -at the same time- would help, or would actually be counterproductive? Also your question goes beyond, you ask if the alkaline agent can work -after- the ingestion. Maybe they should be taken with a separation of 20 minutes?
-Sorry for the bump-Stupid cell phone!
I highly suggest that nobody uses baking soda to try to increase the effects of amphetamines. From my experience doing this, all it caused me was a dirtier High, more negative side effects, what seemed like a shorter duration, and a very harsh come down, was not worth the boost at all, if you want the most out of your amphetamine high, I suggest adequate sleep, proper food intake, and taking supplements, as one would before taking MDMA, and have antacids to take on an empty stomach before dosing, and avoiding anything acidic.