Potential Interactions Between Bupropion and Omeprazole

Metabolic Pathways and Potential Interaction

• Bupropion is primarily metabolized by CYP2B6, while omeprazole is predominantly metabolized by CYP2C19 and to a lesser extent by CYP3A4 1

Clinical Implications

• Unlike interactions between omeprazole and clopidogrel, there is no evidence suggesting that omeprazole significantly alters bupropion's efficacy or safety profile 2, 3
• Bupropion has been shown to inhibit CYP2D6, but this does not meaningfully impact omeprazole metabolism since omeprazole does not rely significantly on this pathway 1

Special Considerations

• Both medications can be administered without dose adjustments or altered timing when used concomitantly, as recommended by the American Academy of Child and Adolescent Psychiatry 4
• Patients with genetic variations in CYP2C19 may theoretically experience slightly altered drug levels, but this has not been shown to be clinically significant for the bupropion-omeprazole combination 5

Monitoring Recommendations

• Routine monitoring of therapeutic efficacy for both medications is sufficient; no special monitoring is required specifically for this drug combination, as recommended by the American Academy of Child and Adolescent Psychiatry 4

Common Pitfalls to Avoid

• Do not confuse this interaction profile with that of omeprazole and clopidogrel, which has documented clinical significance due to shared metabolic pathways 2, 6
• Do not unnecessarily separate administration times of these medications, as there is no evidence supporting the need for this practice, as recommended by the American Academy of Child and Adolescent Psychiatry 4