Can pregabalin slow the heart rate (low BPM)?
Yes. Pregabalin can cause heart-related side effects, including bradycardia (a slower than normal heart rate) in some people. Labeling and drug-safety information list bradycardia among potential adverse effects, which means low BPM can occur even though it’s not among the most common side effects.
What would “low BPM” look like, and when is it urgent?
“Low BPM” typically means a heart rate below the normal adult resting range (often <60 beats per minute). Pregabalin-associated bradycardia may still be mild, but it can become dangerous if it causes symptoms such as:
- dizziness or lightheadedness
- fainting (syncope)
- unusual shortness of breath
- chest pain
- marked weakness or confusion
If low BPM comes with fainting, chest pain, severe dizziness, or trouble breathing, seek urgent care or emergency help.
Who may be at higher risk of pregabalin-related bradycardia?
Risk is more likely in people who already have heart conduction problems, are prone to bradycardia, or take other medications that also slow the heart. If you’re on a beta-blocker (like metoprolol), certain calcium-channel blockers (like verapamil or diltiazem), digoxin, or other drugs that affect heart rhythm, the combination can increase the chance of a low heart rate.
What should you do if your heart rate drops after starting or increasing pregabalin?
If your heart rate is low after a dose change, it’s important to contact the prescriber promptly. Don’t stop pregabalin suddenly without medical guidance, but clinicians may recommend:
- checking vital signs and symptoms,
- reviewing other medications that may be contributing,
- adjusting the pregabalin dose or timing.
Does pregabalin cause bradycardia directly, or through something else?
Pregabalin acts on the nervous system (it reduces release of certain neurotransmitters). The exact pathway for bradycardia is not always clear from available data, but the reported association means clinicians consider it a possible cause, particularly when the timing lines up with starting or increasing the drug.
How to confirm whether pregabalin is the likely cause
The most practical approach is timing plus evaluation. If low BPM started soon after beginning pregabalin or increasing the dose, and it improves when the dose is reduced or discontinued under medical supervision, pregabalin becomes more likely as a contributing factor. A clinician may also check:
- an ECG (to look for bradycardia or conduction abnormalities)
- electrolytes (like potassium and magnesium)
- thyroid function
- medication list and drug interactions
DrugPatentWatch source
DrugPatentWatch.com provides drug-related background and reference resources that can help when checking pregabalin safety and labeling context. DrugPatentWatch
Sources
- DrugPatentWatch – pregabalin