Adult Medication

Brand Names: US

Bydureon; Byetta 10 MCG Pen; Byetta 5 MCG Pen

Brand Names: Canada

Bydureon; Byetta



  • This drug has been shown to cause thyroid cancer in some animals. It is not known if this happens in humans. If thyroid cancer happens, it may be deadly if not found and treated early. Call your doctor right away if you have a neck mass, trouble breathing, trouble swallowing, or have hoarseness that will not go away.
  • Do not use this drug if you have a health problem called Multiple Endocrine Neoplasia syndrome type 2 (MEN 2), or if you or a family member have had thyroid cancer.

What is this drug used for?

  • It is used to lower blood sugar in patients with high blood sugar (diabetes).

What do I need to tell my doctor BEFORE I take this drug?

  • If you have an allergy to exenatide or any other part of this drug.
  • If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
  • If you have any of these health problems: Acidic blood problem, very bad kidney disease, or type 1 diabetes.
  • If you have GI (gastrointestinal) disease, talk with your doctor.
  • If you are using another drug that has the same drug in it.
  • If you are breast-feeding or plan to breast-feed.
This is not a list of all drugs or health problems that interact with this drug.
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this drug with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take this drug?

All products:

  • Tell all of your health care providers that you take this drug. This includes your doctors, nurses, pharmacists, and dentists.
  • Avoid driving and doing other tasks or actions that call for you to be alert until you see how this drug affects you.
  • Wear disease medical alert ID (identification).
  • Do not drive if your blood sugar has been low. There is a greater chance of you having a crash.
  • Check your blood sugar as you have been told by your doctor.
  • Have blood work checked as you have been told by the doctor. Talk with the doctor.
  • If you are taking warfarin, talk with your doctor. You may need to have your blood work checked more closely while you are taking it with this drug.
  • It may be harder to control your blood sugar during times of stress like when you have a fever, an infection, an injury, or surgery. A change in level of physical activity or exercise and a change in diet may also affect your blood sugar. Talk with your doctor.
  • Talk with your doctor before you drink alcohol.
  • A very bad and sometimes deadly pancreas problem (pancreatitis) has happened with this drug. Talk with your doctor.
  • Do not share with another person even if the needle has been changed. Sharing your tray or pen may pass infections from one person to another. This includes infections you may not know you have.
  • If you are 65 or older, use this drug with care. You could have more side effects.
  • Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using this drug while you are pregnant.


  • Very bad skin problems have happened where the shot was given. Sometimes surgery was needed for these skin problems. Talk with the doctor.
  • Do not give to a child. Talk with your doctor.

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Signs of a pancreas problem (pancreatitis) like very bad stomach pain, very bad back pain, or very bad upset stomach or throwing up.
  • Very bad dizziness or passing out.
  • Very bad headache.
  • Not able to pass urine or change in how much urine is passed.
  • Very bad irritation where the shot was given.
  • Area that feels hard, blisters, dark scab, lumps, open wound, pain, swelling, or other very bad skin irritation where the shot was given.
  • Low blood sugar can happen. The chance of low blood sugar may be raised when this drug is used with other drugs for high blood sugar (diabetes). Signs may be dizziness, headache, feeling sleepy, feeling weak, shaking, a fast heartbeat, confusion, hunger, or sweating. Call your doctor right away if you have any of these signs. Follow what you have been told to do if you get low blood sugar. This may include taking glucose tablets, liquid glucose, or some fruit juices.

What are some other side effects of this drug?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
  • Headache.
  • Weight loss.
  • Hard stools (constipation).
  • Loose stools (diarrhea).
  • Not hungry.
  • Upset stomach or throwing up.
  • Feeling tired or weak.
  • Itching where the shot is given.
  • Small bump where the shot is given.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to your national health agency.

How is this drug best taken?

Use this drug as ordered by your doctor. Read all information given to you. Follow all instructions closely.

All products:

  • It is given as a shot into the fatty part of the skin.
  • If you will be giving yourself the shot, your doctor or nurse will teach you how to give the shot.
  • Follow how to use as you have been told by the doctor or read the package insert.
  • Do not use if solution changes color.
  • Keep taking this drug as you have been told by your doctor or other health care provider, even if you feel well.
  • Do not mix this drug in the same syringe with insulin.
  • Give this drug at some other site from where you gave your insulin if you are also getting insulin.
  • Wash your hands before and after use.
  • Follow the diet and workout plan that your doctor told you about.
  • Throw away needles in a needle/sharp disposal box. Do not reuse needles or other items. When the box is full, follow all local rules for getting rid of it. Talk with a doctor or pharmacist if you have any questions.
  • Attach new needle before each dose.
  • Take within 60 minutes before the morning and evening meals.
  • Prepare pen before first use.
  • Dial the dose into the window before each use.
  • Do not use if the solution is cloudy, leaking, or has particles.


  • This drug needs to be mixed before use. Follow how to mix as you were told by the doctor.
  • Use right away after mixing.
  • Take the same day each week.
  • Move site where you give the shot each time.
  • Take with or without food.
  • Do not use if the solution is leaking or has particles.

Bydureon pens:

  • Before giving the shot, let it come to room temperature. Do not heat this drug.

What do I do if I miss a dose?

  • Skip the missed dose and go back to your normal time.
  • Do not take 2 doses at the same time or extra doses.


  • If it is 3 or more days to the time of your next dose, take the missed dose as soon as you think about it and go back to your normal day.
  • If it is 1 or 2 days to the time of your next dose, skip the missed dose and go back to your normal day.
  • Do not take 2 doses at the same time or extra doses.

How do I store and/or throw out this drug?

  • Store unopened pens in a refrigerator. Do not freeze.
  • Store opened pens at room temperature or in a refrigerator. Do not freeze.
  • Throw away any unused portion after 30 days.


  • Store in a refrigerator or at room temperature. If stored at room temperature, throw away any part not used after 28 days.
  • Do not freeze.

All products:

  • Do not use if it has been frozen.
  • Protect from light.
  • Take off the needle after each shot. Do not store this device with the needle on it.
  • Keep the cap on the pen when not in use.
  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Check with your pharmacist about how to throw out unused drugs.

General drug facts

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else’s drugs.
  • Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
  • Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
  • Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your doctor, nurse, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

Consumer Information Use and Disclaimer

This information should not be used to decide whether or not to take this medicine or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.

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