Several classes of drugs lower heart rate, either as their primary purpose or as a side effect. Beta-blockers are the most commonly prescribed, but calcium channel blockers, ivabradine, digoxin, and certain other medications also slow the heart. The right choice depends on why your heart rate needs to come down and what other conditions you have.
Beta-Blockers
Beta-blockers are the most widely used drugs for lowering heart rate. They work by blocking the receptors that adrenaline and similar stress hormones use to speed up your heart. When those receptors are blocked, the heart beats more slowly and with less force.
There are two main types. Cardio-selective beta-blockers target the heart specifically and include metoprolol, atenolol, bisoprolol, and esmolol. Non-selective beta-blockers, such as propranolol, carvedilol, sotalol, and labetalol, block receptors in both the heart and other tissues like the lungs and blood vessels. Cardio-selective options are generally preferred when someone also has asthma or lung disease, since blocking receptors in the airways can make breathing harder.
When taken by mouth, most beta-blockers reach their peak effect within one to four hours. Intravenous versions work almost immediately, which is why hospitals use them for urgent situations. You’ll typically notice a meaningful drop in resting heart rate within the first few days of starting oral treatment, though your doctor may adjust the dose over weeks to find the right balance.
Calcium Channel Blockers
Not all calcium channel blockers lower heart rate. Only the “non-dihydropyridine” subclass does this, and it includes two drugs: verapamil and diltiazem. These medications slow electrical signals as they pass through a key relay point in the heart, which reduces how fast the lower chambers beat. They’re effective for both lowering a high resting heart rate and controlling the rate in atrial fibrillation.
The other subclass, dihydropyridine calcium channel blockers like amlodipine and nifedipine, primarily relaxes blood vessels to lower blood pressure. These can actually cause a slight increase in heart rate as a reflex response, so they aren’t used when slowing the heart is the goal.
Ivabradine
Ivabradine is the only drug designed to lower heart rate and nothing else. It works on the heart’s natural pacemaker cells by blocking a specific electrical current (called the “funny current”) that controls how fast those cells fire. Because it targets only this one channel, it slows your heart without affecting blood pressure, the strength of each heartbeat, or electrical conduction elsewhere in the heart.
This selectivity makes ivabradine useful for people who can’t tolerate beta-blockers or who need additional heart rate reduction on top of other medications. It’s approved for heart failure with a reduced pumping ability and, in some countries, for stable chest pain caused by coronary artery disease. The typical dosing is twice daily.
Digoxin
Digoxin, derived from the foxglove plant, has been used in heart medicine for over two centuries. It lowers heart rate through an indirect route: it increases the activity of the vagus nerve, which is your body’s built-in brake for the heart. This heightened vagal tone slows electrical conduction through the heart and is particularly useful for controlling the ventricular rate in atrial fibrillation.
Digoxin is currently approved for two conditions: heart failure with reduced pumping function and atrial fibrillation rate control. It’s used less frequently than beta-blockers or calcium channel blockers today, partly because the margin between a therapeutic dose and a toxic dose is narrow. But it remains a valuable option when other drugs aren’t enough or aren’t tolerated.
Antiarrhythmic Drugs With Rate-Slowing Effects
Some antiarrhythmic medications lower heart rate as a secondary property, even though their main job is to restore a normal rhythm. Sotalol is the clearest example: it combines beta-blocking activity with potassium channel blocking, so it both slows the heart rate and helps prevent abnormal rhythms. It extends the time between heartbeats at the pacemaker level and slows conduction through the electrical relay point between the upper and lower chambers.
Amiodarone and dronedarone also have some rate-slowing properties, but guidelines recommend using them primarily for rhythm control rather than rate control. Dronedarone, in particular, has been linked to increased cardiovascular risk in patients with permanent atrial fibrillation and is not considered a safe choice for rate management alone. Other antiarrhythmics in different classes have no role in lowering heart rate and can paradoxically speed it up.
Alpha-2 Agonists
Clonidine and guanfacine are primarily prescribed for high blood pressure or ADHD, but they also lower heart rate. They work in the brain, activating receptors that dial down the sympathetic nervous system, your body’s “fight or flight” wiring. With less sympathetic drive reaching the heart, it beats more slowly. In clinical studies of patients with mild to moderate hypertension, both drugs reduced pulse rate comparably after 12 weeks of treatment, though guanfacine’s effect developed more gradually.
These aren’t first-line choices for heart rate control, but the effect is important to know about if you’re taking them for another reason.
Drugs That Lower Heart Rate as a Side Effect
Several medications not designed for the heart can slow it down. Opioid painkillers can cause bradycardia and a drop in blood pressure through their effects on the nervous system. This risk increases when opioids are combined with sedatives like benzodiazepines, which can further depress heart function. If you’re on these medications and feel dizzy, unusually tired, or faint, the combination may be pushing your heart rate too low.
What “Too Low” Looks Like
A normal resting heart rate for adults falls between 60 and 100 beats per minute. Bradycardia, the clinical term for a slow heart rate, is defined as anything below 60 bpm. Many healthy people, especially athletes, sit below 60 without any problems. The issue arises when a slow rate means the brain and organs aren’t getting enough oxygen.
Symptoms to watch for include dizziness, lightheadedness, unusual fatigue (especially during physical activity), confusion, shortness of breath, chest pain, and fainting or near-fainting. If you’re on any rate-lowering medication and develop these symptoms, your dose may need adjusting.
Target Heart Rate on Medication
For people taking rate-control drugs for atrial fibrillation, clinical trials have tested two approaches. Strict rate control aims for a resting heart rate below 80 bpm and below 110 bpm during moderate exercise. Lenient rate control simply targets a resting rate below 110 bpm. A large trial called RACE II compared these two strategies in 614 patients and found similar outcomes in both groups, suggesting that for many people, keeping the resting rate under 110 is sufficient.
Stricter targets (below 80 at rest) are still recommended in certain situations, including for people with implanted cardiac devices. Your target will depend on your specific condition, symptoms, and how well you tolerate a given heart rate.