Can Wellbutrin Be Taken with Clonidine?
Yes, bupropion (Wellbutrin) can be safely taken with clonidine—there is no clinically significant drug interaction between these medications. The FDA drug label for Wellbutrin does not list clonidine as a contraindication or significant interaction, and clinical research directly supports the safety of this combination 1.
Evidence Supporting Concurrent Use
The most definitive evidence comes from a controlled clinical study that specifically examined this combination. Bupropion pretreatment (100 mg three times daily for 9 days) had no effect on clonidine's hypotensive, bradycardic, or sedative actions in normotensive subjects 2. This contrasts sharply with tricyclic antidepressants like imipramine, which significantly antagonized clonidine's effects in the same study—reducing its hypotensive action by 40-50% in half of subjects 2.
Animal studies corroborate these findings: bupropion (25 mg/kg for 16 days) did not antagonize clonidine's cardiovascular effects in spontaneously hypertensive rats, while desipramine did 2. This suggests bupropion lacks the alpha-2 receptor antagonism that causes problematic interactions with clonidine.
Mechanistic Considerations
The FDA label for Wellbutrin specifically addresses dopaminergic drug interactions (levodopa, amantadine) and CYP2D6 substrate interactions (beta-blockers like metoprolol), but makes no mention of clonidine as a problematic combination 1. This is mechanistically sound: bupropion is a dopamine/norepinephrine reuptake inhibitor that does not interfere with alpha-2 adrenergic receptors, clonidine's primary mechanism of action.
Clinical Practice Guidelines Context
While guidelines for ADHD treatment note historical concerns about combining stimulants with clonidine (related to four deaths reported to FDA MEDWATCH), these guidelines explicitly state there are no studies or case reports of adverse effects when bupropion and stimulants are combined, and the PDR does not warn against such interactions 3. If bupropion-stimulant combinations raise no red flags, the bupropion-clonidine combination is even less concerning given the direct evidence of safety.
Monitoring Recommendations
When using this combination:
- Monitor blood pressure and heart rate as you would with either medication alone, particularly since clonidine can cause bradycardia and hypotension 4, 5
- Be aware that clonidine must be tapered (never abruptly discontinued) to avoid rebound hypertension—this applies regardless of bupropion co-administration 4, 5
- Watch for bupropion's typical CNS effects (restlessness, agitation) which are unrelated to clonidine interaction 1
Important Caveat
This safety profile applies specifically to bupropion-clonidine combinations. Do not extrapolate to other antidepressants: tricyclic antidepressants (TCAs) and some other agents can significantly antagonize clonidine's effects and should be avoided or used with extreme caution 2, 6.