Drug General Information (ID: DDII3PBA42)
  Drug Name Dextroamphetamine Drug Info Magnesium carbonate Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Cns Stimulants Antacids
  Structure

 Mechanism of Dextroamphetamine-Magnesium carbonate Interaction (Severity Level: Moderate)
     Altered gastric pH Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Dextroamphetamine Magnesium carbonate
      Mechanism Gastric pH sensitive Gastric alkalinizer
      Key Mechanism Factor 1
Factor Name Gastric pH
Factor Description The normal pH range of gastric acid is between 1.5 and 3.5 and is highly acidic, consisting mainly of hydrochloric acid. Changes in the pH of the stomach can alter the absorption of drugs.
      Mechanism Description
  • Decreased absorption of Dextroamphetamine due to altered gastric pH caused by Magnesium carbonate 

Recommended Action
      Management Concomitant administration of amphetamines and gastrointestinal alkalinizing agents such as antacids or other medications that contain antacids (e.g., didanosine buffered tablets or pediatric oral solution) should generally be avoided.

References
1 Product Information. Adderall (amphetamine-dextroamphetamine) Shire Richwood Pharmaceutical Company, Florence, KY.