Acidifying agents: Gastrointestinal acidifying agents (guanethidine, reserpine, glutamic acid HCl, ascorbic acid, fruit juices, etc.) lower absorption of amphetamines.
<Gastrointestinal acidifying agents, mechanism, amphetamines>, <guanethidine, mechanism, amphetamines>, <reserpine, mechanism, amphetamines>, <glutamic acid HCl, mechanism, amphetamines>, <ascorbic acid, mechanism, amphetamines>