Drug General Information (ID: DDIT6I1OUK)
  Drug Name Amantadine Drug Info Bupropion Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Antiviral Agents Antidepressants
  Structure

 Mechanism of Amantadine-Bupropion Interaction (Severity Level: Major)
     Increased risk of lowers seizure threshold Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Amantadine Bupropion
      Mechanism Lower seizure threshold Lower seizure threshold
      Key Mechanism Factor 1
Factor Name Lowers seizure threshold
Factor Description The combination of medications that lower the seizure threshold is a factor that makes people with epilepsy more likely to have seizures. A seizure is a sudden, uncontrolled electrical disturbance in the brain that can cause changes in your behavior, movements or sensations, and level of consciousness.
      Mechanism Description
  • Increased risk of lowers seizure threshold by the combination of Amantadine and Bupropion 

Recommended Action
      Management Extreme caution is advised if bupropion is administered with amantadine, particularly in the elderly and in patients with a history of seizures or other risk factors for seizures (e.g., head trauma brain tumor severe hepatic cirrhosis metabolic disorders CNS infections excessive use of alcohol or sedatives addiction to opiates, cocaine, or stimulants diabetes treated with oral hypoglycemic agents or insulin). The manufacturer recommends a lower initial dosage of bupropion and gradual dosage increments in patients receiving the drugs concurrently. The total dose of bupropion should generally not exceed 450 mg/day (or 150 mg every other day in patients with severe hepatic cirrhosis). Bupropion should be discontinued and not restarted in patients who experience a seizure during treatment.

References
1 Johnston JA, Lineberry CG, Ascher JA, et al. "A 102-center prospective study of seizure in association with bupropion." J Clin Psychiatry 52 (1991): 450-6. [PMID: 1744061]
2 Product Information. Wellbutrin (bupropion). Glaxo Wellcome, Research Triangle Park, NC.
3 Rosenstein DL, Nelson JC, Jacobs SC "Seizures associated with antidepressants: a review." J Clin Psychiatry 54 (1993): 289-99. [PMID: 8253696]