Drug Interactions With Dextroamphetamine (Cont.)

Dextroamphetamine Interactions Explained

 
Acetazolamide (Diamox)
Taking dextroamphetamine and acetazolamide together can increase the amount of dextroamphetamine in the blood, resulting in possible side effects. Your healthcare provider may need to decrease your dose of dextroamphetamine.
 
Ammonium Chloride
Taking dextroamphetamine and ammonium chloride together can decrease the amount of dextroamphetamine in the blood, perhaps making dextroamphetamine less effective. Your healthcare provider may need to increase your dose of dextroamphetamine.
 
Certain Antacids
Taking dextroamphetamine with very high doses of certain antacids (such as calcium carbonate) can increase the amount of dextroamphetamine in the blood, resulting in possible side effects. This is probably not a problem with occasional use of antacids. Your healthcare provider may need to adjust your dose of these medications.
 
Certain Sleep Medications
Taking dextroamphetamine with certain sleep medications, such as diphenhydramine, can decrease the effectiveness of the sleep medication. Your healthcare provider may need to adjust your dose of these medications.
 
Chlorpromazine (Thorazine)
Taking dextroamphetamine and chlorpromazine together can change the way the brain reacts to dextroamphetamine, making it less effective. Your healthcare provider may need to adjust your dose of these medications.
 
Ethosuximide (Zarontin)
Taking dextroamphetamine and ethosuximide together can cause ethosuximide to be absorbed in the body more slowly, perhaps making it less effective. Your healthcare provider may need to adjust your dose of these drugs.
 
Haloperidol (Haldol)
Taking dextroamphetamine and haloperidol together can change the way the brain reacts to dextroamphetamine, making it less effective. Your healthcare provider may need to adjust your dose of these drugs.
(Drug Interactions With Dextroamphetamine Continued: Page 3)

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Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;