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Overview: Esperoct is used to treat or prevent certain types of bleeding in people with hemophilia A. It works by replacing a protein called factor VIII, which temporarily helps your blood to clot properly. Common side effects include rash, itching, or pain, swelling, rash, or redness where the needle entered your skin.

Uses

What is Esperoct used for?

Hemophilia A is a condition that causes your blood to not clot properly. Esperoct (antihemophilic factor, recombinant) is commonly used to treat or prevent certain types of bleeding in people with hemophilia A.

Esperoct may also be used for other conditions as determined by your health care provider.

How does Esperoct work (mechanism of action)?

Hemophilia A is caused when your body does not make enough of a certain protein called factor VIII, which normally helps cause your blood to clot. Esperoct works by replacing factor VIII, which temporarily helps your blood to clot properly.

How is Esperoct supplied (dosage forms)?

Esperoct is available in an injectable form in multiple strengths in single-dose vials.

How should I store Esperoct?

Esperoct may be given by a health care provider in a hospital or clinic, or it may be given at home after training by a health care provider. If you will store Esperoct at home, follow the instructions given by your health care provider.

Side Effects

What are the most common side effects of Esperoct?

The most common side effects of Esperoct are listed below. Tell your health care provider if you have any of these side effects that bother you.

  • Rash
  • Itching
  • Pain, swelling, rash, or redness where the needle entered your skin

There may be other side effects of Esperoct that are not listed here. Contact your health care provider if you think you are having a side effect of a medicine. In the U.S., you can report side effects to the FDA at www.fda.gov/medwatch or by calling 800-FDA-1088 (800-332-1088). In Canada, you can report side effects to Health Canada at www.health.gc.ca/medeffect or by calling 866-234-2345.

What are the serious side effects of Esperoct?

While less common, the most serious side effects of Esperoct are described below, along with what to do if they happen.

Severe Allergic Reactions. Esperoct may cause allergic reactions, which can be serious. Stop using Esperoct and get help right away if you have any of the following symptoms of a serious allergic reaction.

  • Breathing problems or wheezing
  • Racing heart
  • Fever or general ill feeling
  • Swollen lymph nodes
  • Swelling of the face, lips, mouth, tongue, or throat
  • Trouble swallowing or throat tightness
  • Itching or skin rash
  • Bumps on the skin called hives that can be red, pink, white, or brown depending on your skin tone
  • Nausea or vomiting
  • Dizziness, feeling lightheaded, or fainting
  • Stomach cramps
  • Joint pain

Warnings & Precautions

Who should not use Esperoct?

Allergies to Ingredients. People who are allergic to any of the following should not use Esperoct.

  • Antihemophilic factor, recombinant
  • Esperoct
  • Any of the ingredients in the specific product dispensed

Your pharmacist can tell you all of the ingredients in Esperoct.

Allergy to Hamster Proteins. Do not use Esperoct if you are allergic to hamster proteins. Tell your health care provider if you are allergic to hamsters or hamster proteins.

What should I know about Esperoct before using it?

Do not use Esperoct unless it has been prescribed to you by a health care provider. Use it as prescribed.

Do not share Esperoct with other people, even if they have the same condition as you. It may harm them.

Keep Esperoct out of the reach of children.

Esperoct may be given by a health care provider in a hospital or clinic, or it may be given at home by yourself or a caregiver after proper training by your health care provider. If you use Esperoct at home, make sure that you or a caregiver understands how to properly prepare, use, and throw away this medicine. Read and follow the instructions that come with the medicine. If you have any questions, talk to your health care provider.

Your health care provider should monitor your blood work while you are being treated with Esperoct. Keep all appointments to have your blood checked.

Some people have an immune system reaction to Esperoct that causes it to stop working as well. This is called neutralizing antibodies or inhibitors. Your health care provider should monitor your immune system with blood tests while you are being treated. Talk to your health care provider if you think Esperoct is not working or if you have been told that you have inhibitors to factor VIII.

What should I tell my health care provider before using Esperoct?

Tell your health care provider about all of your health conditions and any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using. This will help them know if Esperoct is right for you.

In particular, make sure that you discuss any of the following.

Planned Surgery. Tell your health care provider if you have any planned surgeries or procedures.

Pregnancy. It is not known if or how Esperoct could affect pregnancy or harm a fetus. Tell your health care provider if you are pregnant or plan to become pregnant.

Breastfeeding. It is not known if Esperoct passes into breast milk. Tell your health care provider if you are breastfeeding or plan to breastfeed.

How can I get more information about Esperoct?

For more information about Esperoct, you can visit the drugmaker’s website at www.esperoct.com or call them at 800-727-6500.

Interactions

Does Esperoct interact with foods or drinks?

There are no known interactions between Esperoct and foods or drinks.

It is unknown if drinking alcohol will affect Esperoct.

Does Esperoct interact with other medicines (drug interactions)?

There are no known interactions between Esperoct and other medicines. Always tell your health care provider about any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using.

Does interact with other drugs you are taking?

Enter your medication into the WebMD interaction checker

Overdose/Missed Dose

What should I do if I accidentally use too much Esperoct?

If you or someone else has used too much Esperoct, get medical help right away, call 911, or contact a Poison Control center at 800-222-1222.

What should I do if I miss a dose of Esperoct?

If you receive Esperoct from a health care provider in a hospital or clinic, your health care provider will make sure you are receiving it as scheduled. If you miss an appointment to get your Esperoct dose, call to make another appointment as soon as possible.

If you use Esperoct at home and you miss a dose, call your health care provider for instructions. Do not use double or extra doses.

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