Bystolic treats high blood pressure. Do not stop taking this medication without talking to your doctor first.

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Pharmacist Anyssa S. Garza, PharmD overviews the uses and common side effects of Bystolic
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Pharmacist Anyssa S. Garza, PharmD overviews the uses and common side effects of Bystolic
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Bystolic Overview


Bystolic is a prescription medicine that is used to treat high blood pressure. Bystolic is in a class of medications called beta blockers and works by relaxing blood vessels and slowing heart rate to decrease blood pressure. 

Bystolic comes in tablet form and is usually taken once a day, with or without food.  
Common side effects include tiredness, low blood pressure, dizziness, and headache. Bystolic may make you drowsy. Do not drive or operate machinery until you know how Bystolic affects you. 

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Bystolic Cautionary Labels


Uses of Bystolic

Bystolic is a prescription medicine that is used to treat high blood pressure. It can be used alone or in combination with other medications.

This medication may be prescribed for other uses. Ask your doctor or pharmacist for more information. 


Bystolic Drug Class

Bystolic is part of the drug class:

Side Effects of Bystolic

Common side effects of Bystolic include:

  • Low blood pressure and feeling dizzy. If you feel dizzy, sit or lie down and tell your doctor right away.
  • Tiredness
  • Slow heartbeat
  • Headache
  • Leg swelling due to fluid retention (edema). Tell your doctor if you gain weight or have trouble breathing while taking Bystolic.

Tell your doctor if you have any side effects that bother you or don't go away.

This is not a complete list of Bystolic  side effects. Ask your doctor or pharmacist for more information.

Call your doctor for medical advice about side effects.  You may report side effects to the FDA at 1-800-FDA-1088.

Bystolic Interactions

Tell your doctor about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements.  Especially tell your doctor if you take:

  • amiodarone (Cordarone, Pacerone)
  • beta blockers such as acebutolol (Sectral), atenolol (Tenormin), bisoprolol (Zebeta), carvedilol (Coreg), and metoprolol (Lopressor)
  • bupropion (Wellbutrin)
  • calcium channel-blockers such as diltiazem (Cardizem) and verapamil (Isoptin)
  • chlorpheniramine (in many allergy and cold medications)
  • cimetidine (Tagamet)
  • clomipramine (Anafranil)
  • clonidine (Catapres)
  • digoxin (Digitek, Lanoxin)
  • disopyramide (Norpace)
  • duloxetine (Cymbalta)
  • fluoxetine (Prozac)
  • haloperidol (Haldol)
  • insulin and other diabetes medications
  • methadone (Dolophine)
  • paroxetine (Paxil)
  • propafenone (Rythmol)
  • quinidine (Quinaglute)
  • reserpine 
  • ritonavir (Norvir)
  • sildenafil (Viagra)

This is not a complete list of Bystolic drug interactions. Ask your doctor or pharmacist for more information.

Bystolic Precautions

Do not take Bystolic if you:

  • Have heart failure and are in the ICU or need medicines to keep up your blood circulation
  • Have a slow heartbeat or your heart skips beats (irregular heartbeat)
  • Have severe liver damage
  • Are allergic to any ingredient in Bystolic.

Bystolic Food Interactions

Medicines can interact with certain foods.  In some cases, this may be harmful and your doctor may advise you to avoid certain foods. In the case of Bystolic, there are no specific foods that you must exclude from your diet when receiving Bystolic.


Inform MD

Tell your doctor about all of your medical problems, including if you:

  • Have asthma or other lung problems (such as bronchitis or emphysema)
  • Have problems with blood flow in your feet and legs (peripheral vascular disease). Bystolic can make symptoms of blood flow problems worse.
  • Have diabetes and take medicine to control blood sugar
  • Have thyroid problems
  • Have liver or kidney problems
  • Had allergic reactions to medications or have allergies
  • Have a condition called pheochromocytoma
  • Are pregnant or trying to become pregnant. It is not known if Bystolic is safe for your unborn baby. Talk with your doctor about the best way to treat high blood pressure while you are pregnant.
  • Are breastfeeding. It is not known if Bystolic passes into your breast milk. You should not breastfeed while using Bystolic.
  • Are scheduled for surgery and will be given anesthetic agents

Tell your doctor about all the medicines you take. Include prescription and non-prescription medicines, vitamins, and herbal products. Bystolic and certain other medicines can affect each other and cause serious side effects.

Keep a list of all the medicines you take. Show this list to your doctor and pharmacist before you start a new medicine.

Bystolic and Pregnancy

Tell your doctor if you are pregnant or plan to become pregnant.

The FDA categorizes medications based on safety for use during pregnancy. Five categories - A, B, C, D, and X, are used to classify the possible risks to an unborn baby when a medication is taken during pregnancy.

Bystolic falls into category C. In animal studies, pregnant animals were given this medication and had some babies born with problems. No well-controlled studies have been done in humans. Therefore, this medication may be used if the potential benefits to the mother outweigh the potential risks to the unborn child.


Bystolic and Lactation

It is not known if Bystolic crosses into human milk. Because many medications can cross into human milk and because of the possibility for serious adverse reactions in nursing infants with use of this medication, a choice should be made whether to stop nursing or stop the use of this medication. Your doctor and you will decide if the benefits outweigh the risk of using Bystolic.


Bystolic Usage

  • Do not suddenly stop taking Bystolic. You could have chest pain or a heart attack. If your doctor decides to stop Bystolic, your doctor may slowly lower your dose over time before stopping it completely.
  • Take Bystolic every day exactly as your doctor tells you. Your doctor will tell you how much Bystolic to take and how often. Your doctor may start with a low dose and raise it over time.
  • Do not stop taking Bystolic or change your dose without talking with your doctor.
  • Take Bystolic with or without food.
  • If you miss a dose, take your dose as soon as you remember, unless it is close to the time to take your next dose. Do not take 2 doses at the same time. Take your next dose at the usual time.

Bystolic Dosage

For most people, the recommended starting dose is 5 mg once daily, with or without food, alone or in combination with other medicines. If necessary, the dose can be increased at 2-week intervals up to 40 mg. 

Bystolic Overdose

If you take too much Bystolic, call your doctor or poison control center right away or seek emergency medical attention.


Other Requirements

  • Store Bystolic between 68° to 77°F (20° - 25°C).
  • Safely throw away Bystolic that is out of date or no longer needed.
  • Keep Bystolic and all medicines out of the reach of children.