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Can Beta Blockers Lower Heart Rate Too Much

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Can You Take Beta Blockers And Exercise

How to safely come off beta blockers

High blood pressure is known as the silent killer. According to the U.S. Centers for Disease Control and Prevention , nearly half of adults in the U.S. have the condition. Still, many arent aware of it because there are no apparent symptoms until a heart attack or stroke happens.

Beta blockers, also called beta-adrenergic blocking agents, are widely-prescribed medications to decrease high blood pressure and prevent heart disease. While exercise can lower your blood pressure, overexertion can be dangerous. This guide will help people with hypertension learn how to safely mix beta blockers and exercise.

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Dosage Forms Of Metoprolol

There are two different types of metoprolol: metoprolol tartrate and metoprolol succinate. Metoprolol tartrate is used in immediate-release tablets and comes in 25 mg, 37.5 mg, 50 mg, 75 mg, and 100 mg pills. Metoprolol succinate is used in the extended-release capsules and tablets and comes in 25 mg, 50 mg, 100 mg, and 200 mg pills. The specific dose recommended by your healthcare provider will vary depending on the condition being treated, as well as your other medical issues.

How Do Beta Blocker Drugs Affect Exercise

Beta blockers are a type of cardiac medication prescribed after a heart attack or to treat abnormal heart rhythms and other conditions. They slow down your heartbeat, and that raises a common question about them: Do they affect your ability to exercise?

The answer can vary a great deal, depending on the severity of your condition, so checking with your healthcare provider is vital. Its also important to understand how these drugs affect your heart.

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What If I Forget To Take It

If you forget to take a dose of your beta blocker, take it as soon as you remember, unless it is nearly time for your next dose. In this case, just leave out the missed dose and take your next dose as normal.

Never take 2 doses at the same time. Never take an extra dose to make up for a forgotten one.

If you often forget doses, it may help to set an alarm to remind you. You could also ask your pharmacist for advice on other ways to help you remember to take your medicine.

How Exercise Reduces Your Resting Heart Rate


When you do aerobic exercise, blood flow is directed toward the muscles you’re using and away from areas that aren’t doing much . There is increased blood flow as well as an increase in the volume of blood returning to the heart. Over time, the left ventricle adapts and enlarges to accommodate the increased volume. This larger cavity can hold more blood, and ejects more blood per beat, even at rest your resting heart rate drops because each beat delivers a bigger burst of blood, and fewer beats are needed.

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Visual And Breathing Problems

When you take metoprolol, you also may experience a problem focusing your vision. Objects near or far–or both–may be blurry, and you may not be able to bring them into focus. Another potential common side effect of the drug is feeling short of breath: you cannot seem to get enough air into your lungs to be comfortable.

  • When you take metoprolol, you also may experience a problem focusing your vision.
  • Another potential common side effect of the drug is feeling short of breath: you cannot seem to get enough air into your lungs to be comfortable.

Who Can Take Beta Blockers

Beta blockers are not suitable for everyone. To make sure they are safe for you, tell your doctor before starting a beta blocker if you have:

  • had an allergic reaction to a beta blocker or any other medicine in the past
  • low blood pressure or a slow heart rate
  • serious blood circulation problems in your limbs
  • metabolic acidosis when there’s too much acid in your blood
  • lung disease or asthma

Tell your doctor if you’re trying to get pregnant, are already pregnant or breastfeeding.

It’s important not to stop taking beta blockers without seeking your doctor’s advice. In some cases suddenly stopping the medicine may make your health condition worse.

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Baseline Evaluations And Data Management

Information collected at baseline included: demographics medical history risk factors and lifestyle results of physical examination HR current symptoms laboratory values and current chronic medical treatments .

Data were collected centrally using an electronic, standardized, international case report form and sent electronically to the data management center where checks for completeness, internal consistency, and accuracy were run.

Data quality control is performed onsite in 5% of sites chosen at random in each country with, at each site, monitoring of 100% of case report forms for source documentation and accuracy. The study is being performed in accordance with the principles of the Declaration of Helsinki and was approved by the National Research Ethics Service, Isle of Wight, Portsmouth and Southeast Hampshire Research Ethics Committee, UK. Approval was also obtained in all 45 participating countries, in accordance with local regulations before recruitment of the first participant. All patients gave written informed consent to participate, in accordance with national and local guidelines. The CLARIFY Registry is registered in the ISRCTN registry of clinical trials with the number ISRCTN43070564.

Which Beta Blockers Can Be Used For Heart Failure

Propranolol (Beta Blockers) For POTS

Beta blockers are often given to patients experiencing a heart attack with the goal being to prevent a second heart attack from happening.

The American College of Cardiology specifically recommends the following beta blockers, which are FDA approved for heart failure:

  • Coreg
  • Toprol XL
  • Zebeta

It is important to note that only the extended-release version ofmetoprolol is approved by the FDA for heart failure, notmetoprolol tartrate.

When using these beta blockers for heart failure treatment, they prevent the heart from being overstimulated and pumping too often, explainsJason Reed, Pharm.D.

Most beta blockers also decrease how hard the heart muscle pumps, Dr. Reed explains. But these beta blockers do not do that, which is why they are able to treat the disease without making symptoms worse.

Interms of differencesbetween the beta blockers used for heart failure, he says, carvedilol blocks beta-1 beta-2 receptors in the heart, as well as alpha-1 receptors in the blood vessels. Metoprolol and bisoprolol primarily block beta-1 receptors in the heart. Although these beta blockers have some differences, they are effective at protecting the heart and reducing the risk of problems from heart failure.

The best beta blockers for heart failure
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Concerns About Exercising While On Beta Blockers

Its important to remember that your heart rate is being slowed, and to adjust accordingly if before you took these drugs you monitored your exercise using heart rate, said Dr. Fletcher, who is also a volunteer with the American Heart Association.

Dont overdo it trying to get your heart rate up to previous levels, he said.

There are a couple of ways to monitor your exercise intensity.

  • If you have been using a target heart rate to get to the right intensity, your healthcare provider can help to determine your new target heart rate using a brief exercise stress test. This test is used because beta blockers affect everyone differently.
  • The second way to monitor your intensity is simpler: making sure youre not too exhausted.
  • Exercise hard to the point of being tired but not excessively hard, Dr. Fletcher said. If you reach a point where it is hard to talk, that is probably too much.

    A Bunch Of Beta Blockers

    You can tell a beta blocker by its generic name they all end in lol. Each has its own particular way of blocking beta receptors. This accounts for their different actions and side effects.

    More than a dozen beta blockers have been approved for use in the United States . They fall into three main groups.

    Nonselective. The earliest beta blockers, like propranolol, affect both beta-1 and beta-2 receptors. Nonselective beta blockers should be used with caution, if at all, in smokers or people with asthma or other lung conditions.

    Cardioselective. A number of beta blockers, including atenolol and metoprolol , were designed to block only beta-1 receptors in heart cells. Since they dont affect beta-2 receptors in blood vessels and the lungs, cardioselective beta blockers are safer for people with lung disorders.

    Third-generation. Some beta blockers do more than block beta receptors. Labetalol blocks alpha receptors, too. This further helps relax blood vessels. Nebivolol stimulates the inner lining of blood vessels to generate nitric oxide, which helps the vessels relax. Carvedilol does both.

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    Are They Safe For Pregnant Women Kids And Older People

    Calcium channel blockers can be used during pregnancy to manage high blood pressure and preeclampsia. However, you should always consult with your doctor before taking calcium channel blockers during pregnancy.

    These drugs may pass into breast milk, but no adverse effect on breastfed infants has been found. Discuss the risks and benefits of using calcium channel blockers while breastfeeding with your doctor.

    The safety of calcium channel blockers in children has not been established however, no problems have been found to date. Discuss the risks and benefits of giving your child calcium channel blockers with your childs doctor.

    Older adults have more side effects from calcium channel blockers than younger people. Doctors usually prescribe lower doses.

    The No 1 Reason People Stop Taking Beta


    The top reason patients stop using beta-blockers is admission to the hospital for various conditions, not just heart failure, Dr. Tang says. However, most people should not stop, even if they are hospitalized, unless the doctors decided that it is more harm than good.

    Research shows that patients fare better when they continue taking beta-blockers while in the hospital, even with acute heart failure.

    An inability to tolerate beta-blockers indicates a worsening heart condition, says Dr. Tang. Other testing may be necessary to determine if the heart is too weak for beta-blockers.

    This may even apply for patients whose heart function has recovered to the normal range. Recent clinical studies have shown that, even in those with full recovery of their heart structure and function, stopping drugs like beta-blockers can reverse the recovery course and can be detrimental, he adds.

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    Overviews Of The Classes Of Blood Pressure Medications

    Summaries of some of the major types of commonly prescribed cardiovascular medications are provided here.

    • For your information and reference, we have included generic names as well as major trade names to help you identify what you may be taking. However, this information does not signify a recommendation or endorsement from the American Heart Association.
    • If your prescription medication isnt on this list, remember that your healthcare provider and pharmacist are your best sources of information.
    • Its important to discuss all of the drugs you take with your doctor and understand their desired effects and possible side effects.
    • Never stop taking a medication and never change your dose or frequency without first consulting your doctor.

    Is It Safe To Stop Using Beta

    Its dangerous to stop taking beta-blockers suddenly, even if youre experiencing side effects.

    When you take beta-blockers, your body gets used to your hearts slower speed. If you stop taking them suddenly, you could increase your risk of a serious heart problem, such as a heart attack.

    Contact your doctor if you experience unpleasant side effects with beta-blockers that last for more than a day or two. Your doctor might suggest another type of medication, but youll still need to slowly taper your beta-blocker dose.

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    How Beta Blockers Affect Your Target Heart Rate

    If you have high blood pressure, treatment often requires medication with a beta blocker, a common type of blood pressure medication that lowers your resting heart rate. Exercising regularly, another important component of managing high blood pressure, also lowers your resting heart rate. Hence, if you take a beta blocker, you will need to make some adjustments when calculating your target heart rate while doing aerobic exercise.

    Beta Blockers And Physical Activity

    How do beta blockers affect exercise?

    Interestingly, beta blockers and exercise have some similar effects on the body.

    Your blood pressure and heart rate are similarly changed by exercise and beta blockers, said Gerald Fletcher, M.D., Professor of Medicine at the Mayo Clinic in Jacksonville, Florida. When you become exercise-trained your heart slows and your blood pressure lowers.

    Of course, that doesnt mean you can take beta blockers in lieu of exercise. Exercise has many other benefits and is important to maintain your health. Read how physical activity improves the quality of life.

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    Low Heart Rate With Propranolol

    Hi, my doctor prescribed 10mg propranolol twice a day. My heart rate went down to 48. My resting heart rate is between 58 and 65 without propranolol. Has anyone else experienced this?

    0 likes, 36 replies

  • Posted 5 years ago

    Thank you both for your quick replies. This will sound silly but the doctor gave me propranolol for anxiety and at the start I did feel very chilled. I felt so relaxed that I felt like I was hardly breathing, if that makes sense. That’s when I decided to check my pulse and it was very low. This was only after a few days on just 10mgs. So now I feel more anxious because of the low heart rate!

  • Posted 5 years ago

    Yes, I’ve heard of heart rates that low. What was your blood pressure before you started taking it and what is it now?

  • Posted 5 years ago

    I couldn’t tell you. All I know is that my gp says ” that’s normal” I should pay more attention really. Anyway I have been in so much pain which is stressing me out that I decided to cut the 10mg in half and have been taking it in the morning and then in the evening if I need it. Even on 5mg my heart rate was 48 but it is doing the trick of keeping me calm at the moment

  • Posted 5 years ago

    Oh mine has never went that low the lowest mine has ever been is 58 but since that night I have worried ever since

  • Posted 5 years ago

    Thx for advice day I took 10mg 2 hours ago and my pulse is 64 I need to stop worrying lol

  • Question: Can Too Much Magnesium Lower Heart Rate

  • How much magnesium should I take for my heart?
  • Symptoms of toxic magnesium levels can range from upset stomach and diarrhea, to more serious symptoms of vomiting, confusion, slowed heart rate and dangerously low blood pressure. Severe magnesium overdoses can lead to problems breathing, coma, irregular heartbeat and even death.

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    How Do Beta Blockers Work

    Beta blockers work by limiting the effects of epinephrine a stress hormone. This slows your heartbeat, decreases blood pressure, and opens blood vessels to improve blood flow. These medications can treat high blood pressure , irregular heart rhythms , chest pains, heartfailure, migraines, and heart attacks.

    For patients with heart failure, beta blockers typically work by reducing a patients heart rate, explains Dawn Shill, Pharm.D., a pharmacist for the Veterans Affairs Healthcare System in Anchorage, Alaska.

    Beta blockers help to improve the balance of myocardial supply and demand. Dr. Shill says, Basically, sometimes heart failure is ischemic. Meaning, there is weakened muscular tissue in the heart that leads to a decreased amount of blood pumped from the heart. Beta blockers can help improve function in certain areas of the heart by reducing the amount of oxygen supply needed for the heart to function at an optimal level.

    Research also shows that beta blockers reduce the release of norepinephrine. Along with epinephrine, norepinephrine normally binds to receptors throughout the body and is involved with blood pressure and heart rate. Blocking the binding of these neurotransmitters to their receptors helps reduce heart rate and blood pressure.

    What Are The Side Effects Of Metoprolol

    How To: Easily Find Your Target Heart Rate for Exercise ...

    Metoprolol is an effective drug, but, like most medicines, it can have both mild and severe side effects.

    Common side effects of metoprolol include :

    • Skin rash

    Black box warning from the FDA : Do not abruptly stop taking metoprolol without talking to your healthcare provider. Stopping metoprolol suddenly may cause chest pain or heart attack . If you need to stop metoprolol, your healthcare provider will help you decrease the dose gradually . Serious side effects of metoprolol include :

    This list does not include all possible side effects and others may exist. Check with your pharmacist or healthcare provider for more information.

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    How Much Does Beta Blocker Lower Heart Rate

    you will need to make soMechanism of actionFor every heart rate reduction of 5 beats/min with beta-blocker treatment, the patients who received one-fourth of the recommended dose of medicine had up to a 20 to Beta-blockers slow the electrical signals in your heart and slow down your heart rate and its ability to pump blood, I think my heart rate is about 10 beats per minute lower on the medication, Exercising regularly, contact your doctor, and will not drop your heart rate or BP to dangerously low levels, And it, I was hoping someone could tell me their experience on beta blockers and how much their resting heart rate

    Whats Your Heart rate? (for those who dont take heart

    See more resultsBeta-blockers slow the electrical signals in your heart and slow down your heart rate and its ability to pump blood, On average, On average, Those awful tachycardia episodes of elevated heart rate, Some beta blockers are selective, Hence, so its important to follow your doctors instructions carefully.This causes my heart to beat slower, or even better rates, so its important to follow your doctors instructions carefully.

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