After being back on Adderall for about 5 months now, I've begun to notice the dreaded (and inevitable) tolerance that accompanies the usage of just about anything over time, return. I've started taking 1/2 teaspoon of sodium bicarbonate (baking soda) in the a.m. mixed with 4 oz of water as it's fairly well known to affect the gastric pH, thus intensifying not only the effect, but prolonging the duration as well by prohibiting the normal time of elimination by the kidneys. Of course there's the hypertensive effect (on top of that caused by the amphetamines themselves) as well as the dehydration factor associated with high amounts of sodium that I need to consider. What I would be interested in knowing is if there's anyone who's had first-hand experience with this. And if so, would you mind sharing your own experiences? Thanks.