Can pregabalin cause brachycardia?
Brachycardia (slow heart rate) is not a commonly cited side effect of pregabalin, but heart-rate–related symptoms can occur with the drug, and rare cases of bradycardia have been reported in drug safety literature. This means it is possible, even if it is not among the more typical pregabalin effects.
What would make pregabalin more likely to affect heart rate?
Risk is higher when pregabalin is combined with other factors that can slow heart rate, such as:
- Other medications that slow conduction or heart rate (for example, some beta-blockers, certain calcium-channel blockers, or antiarrhythmics)
- Existing heart disease or conduction problems
- Dehydration, electrolyte abnormalities, or other acute illness that predispose someone to bradycardia
When should you treat it as urgent?
Seek urgent care or emergency help if brachycardia comes with symptoms like:
- Fainting or near-fainting
- Chest pain
- Severe shortness of breath
- Confusion or extreme weakness
- A very slow pulse that is new or worsening
If there are no red-flag symptoms but the pulse is clearly slow for the person (especially if it’s sustained), contact a clinician promptly to review the medication list and decide whether pregabalin should be adjusted or stopped.
What should patients do if they notice slow heart rate after starting pregabalin?
Do not stop pregabalin abruptly without medical advice, but you should:
- Check and record the heart rate and symptoms (when it occurs, how long it lasts)
- Contact the prescribing clinician to discuss whether pregabalin could be contributing
- Ask whether any other medications should be reviewed for additive effects
Is this the same as “can pregabalin cause palpitations”?
Pregabalin is more commonly associated with sensations like dizziness or feeling “off,” and less commonly with specific rhythm changes that are recognized clinically as bradycardia. If you feel palpitations, skipped beats, or lightheadedness, it’s still important to get an evaluation because the underlying rhythm issue may not be bradycardia alone.
Sources
I don’t have access here to pregabalin-specific safety labeling or a drug-safety database entry to cite for brachycardia directly. If you share whether you’re asking about a specific product label (brand/country) or a particular report you saw, I can help interpret it more precisely.