Urinary alkalinizing agents (acetazolamide, some thiazides) increase the concentration of the non-ionized species of the amphetamine molecule, thereby decreasing urinary excretion.
Source: FDA drug label - dextroamphetamine sulfate
Dextroamphetamine Sulfate Interactions
Brand names: Procentra
3 interactions on record
Ethosuximide - Amphetamines may delay intestinal absorption of ethosuximide.
Source: FDA drug label - dextroamphetamine sulfate
Examples of CYP2D6 Inhibitors include paroxetine and fluoxetine (also serotonergic drugs), quinidine, ritonavir.
Source: FDA drug label - dextroamphetamine sulfate