Does Metoprolol Tartrate And Hydrochlorothiazide Interact with Clonidine?
Metoprolol Tartrate And Hydrochlorothiazide and Clonidine have a major drug interaction according to U.S. FDA drug labeling data. Beta-blocker withdrawal several days before clonidine withdrawal required to avoid exacerbating rebound hypertension; concomitant use also increases risk of bradycardia. The mechanism involves additive atrioventricular effects and beta-blocker rebound hypertension. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This information is based on official FDA drug labeling sourced from OpenFDA and the NIH National Library of Medicine.
- Severity
- Major
- Metoprolol Tartrate And Hydrochlorothiazide Class
- Thiazide Diuretic
- Clonidine Class
- Central alpha-2 Adrenergic Agonist
- Management
- Close medical supervision required
- Data Source
- U.S. FDA via OpenFDA
How This Interaction Works
The interaction between Metoprolol Tartrate And Hydrochlorothiazide and Clonidine occurs because additive atrioventricular effects and beta-blocker rebound hypertension. Clinically, this means beta-blocker withdrawal several days before clonidine withdrawal required to avoid exacerbating rebound hypertension; concomitant use also increases risk of bradycardia. This is classified as a major interaction, meaning it could cause serious harm if not properly managed. Your healthcare provider may need to adjust dosages, substitute one medication, or increase monitoring frequency.
What To Tell Your Doctor or Pharmacist
If you are taking Metoprolol Tartrate And Hydrochlorothiazide and your doctor is considering prescribing Clonidine (or vice versa), make sure to:
- Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
- Ask whether the benefits of combining these medications outweigh the risks for your specific situation
- Ask what symptoms to watch for that would indicate the interaction is causing problems
- Ask how frequently you should be monitored while these are co-prescribed
- Ask whether any dosage adjustments are needed
- Never stop or change either medication without first consulting your healthcare provider