Can Lyrica (pregabalin) cause a low heart rate (bradycardia)?
Lyrica (pregabalin) is not commonly known as a primary cause of bradycardia, but heart-rate effects can occur with medications that affect the nervous system. If you are seeing a consistently low pulse, you should treat it as a safety issue and get checked, especially if it is new for you or you feel unwell.
A key practical point is that low heart rate symptoms may be reported as part of adverse reactions, but the exact frequency and strength of the association with pregabalin depends on the patient and the rest of their medication list.
What symptoms should make you seek urgent care?
Get urgent medical care if a low heart rate comes with any of these:
- Fainting or near-fainting
- Severe dizziness or weakness
- Chest pain
- Shortness of breath
- Confusion or inability to stay awake
- Heart rate that is very low and not improving
Even if pregabalin is the suspected trigger, clinicians will need to rule out dangerous causes (heart rhythm problems, electrolyte issues, medication interactions, or thyroid problems).
Could Lyrica lower your heart rate indirectly through interactions?
Yes. The biggest “real-world” risk for bradycardia is often not pregabalin by itself, but the combination with other drugs that slow the heart or depress the nervous system. Examples include:
- Beta-blockers (for blood pressure, angina, tremor, etc.)
- Some calcium channel blockers (especially rate-controlling ones)
- Other sedatives that can worsen coordination and blood-pressure responses (which can make bradycardia feel worse)
If you tell me your other medications (and doses), I can help you think through the interaction risks more specifically.
When should you stop or change Lyrica?
Do not stop Lyrica abruptly without medical advice. Stopping suddenly can cause withdrawal symptoms and can worsen the condition it treats (neuropathic pain, fibromyalgia, seizures in some regimens).
Instead, contact the prescriber promptly if:
- Your heart rate is newly low
- Your symptoms match bradycardia
- The low pulse persists over time
A clinician may adjust the dose, switch therapy, or investigate another cause.
Could something else be causing the low heart rate (not Lyrica)?
Several common issues can cause low heart rate, including:
- Dehydration or low blood pressure
- Heart rhythm disorders (which may be intermittent)
- Electrolyte imbalances (potassium, magnesium)
- Hypothyroidism
- An underlying conduction problem
- Too much effect from blood-pressure/heart medicines
That is why a medical evaluation matters if your low heart rate is new or symptomatic.
What information should you share with your doctor?
Bring details that help them connect timing and causality:
- Your pulse readings (lowest value and typical range), and how they were measured (resting, during sleep, etc.)
- When you started Lyrica or changed the dose
- Any symptoms (dizziness, fainting, fatigue, shortness of breath)
- Your full medication list, including OTC meds and supplements
- Any known heart disease or prior rhythm issues
If you share your age, typical resting heart rate, Lyrica dose, how long you’ve been on it, and your other meds, I can help you narrow down the most likely causes and the safest next steps to discuss with your clinician.