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Emend for Injection

Generic name: fosaprepitant

Brand names: Emend for Injection, Focinvez

Used for Nausea vomiting
Last updated November 2, 2026 0 views
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What is Emend for Injection?

Emend for Injection is used with other medications to help prevent nausea and vomiting that may occur due to chemotherapy in adults and children who are at least 6 months old and weigh at least 6 kg (13 pounds).

Emend for Injection is not used to treat nausea and vomiting that you already have.

Emend for Injection may also be used for reasons not mentioned in this medication guide.

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Warnings

Tell your doctor about all your other medicines. Some drugs should not be used with Emend for Injection.

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Before taking this medicine

You should not use Emend for Injection if you are allergic to Emend for Injection or similar medicines such as aprepitant.

Some drugs should not be used with Emend for Injection. Your treatment plan may change if you also use pimozide.

Tell your doctor if you have ever had:

  • to use a blood thinner (or a medicine called warfarin) and you have routine "INR" or prothrombin time tests; or
  • liver disease.

It is not known if Emend for Injection will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.

Ask a doctor if it is safe to breastfeed while using this medicine.

Emend for Injection can make hormonal birth control less effective, including birth control pills, injections, implants, skin patches, and vaginal rings. Use barrier birth control to prevent pregnancy: condom, diaphragm, cervical cap, or contraceptive sponge.

Ask your doctor about the best form of birth control while you are using Emend for Injection. Keep using the barrier form of birth control for 1 month after your last dose.

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Emend for Injection side effects

Get emergency medical help if you have signs of an allergic reaction: hives, difficulty breathing, swelling of your face, lips, tongue, or throat.

Some side effects may happen during the injection. Tell your medical caregiver if you feel dizzy, nauseous, light-headed, itchy, sweaty, or if you have a headache, chest tightness, back pain, trouble breathing, or swelling in your face.

Emend for Injection may cause serious side effects. Call your doctor immediately if you have:

  • pain, redness, swelling, burning, blistering, or changes in your skin where the medicine was injected; or
  • a light-headed feeling, as if you might faint; or
  • a fast or slow heart rate.

Common side effects of Emend for Injection may include:

  • feeling weak or tired;
  • fever;
  • low blood cell counts;
  • urinary tract infection;
  • stomach pain or upset;
  • diarrhea; or
  • pain, weakness, or numbness in your arms or legs.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

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How is Emend for Injection given?

Emend for Injection is given as an infusion into a vein. A healthcare provider will give you this injection.

Emend for Injection is not for long-term use.

Emend for Injection is usually given on the first day of chemotherapy treatment.

Tell your medical caregivers if you feel any burning or pain when Emend for Injection is injected.

You may be given other medications to further help prevent nausea and vomiting.

You may need blood tests after receiving Emend for Injection if you also take a blood thinner called warfarin.

What happens if I miss a dose?

In a medical setting, it is unlikely that you will miss a dose of Emend for Injection.

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What happens if I overdose?

In a medical setting, an overdose would be treated quickly.

Follow your doctor's instructions regarding any restrictions on food, drinks, or activities.

This section was rewritten for readability and reviewed for meaning.

What other drugs will affect Emend for Injection?

Sometimes it is not safe to use certain medicines together. Some drugs can change how much of other drugs are in your blood, which may increase side effects or make the medicines less effective.

Many drugs can affect Emend for Injection. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed here. Tell your doctor about all your current medicines and any medicine you start or stop using.

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Frequently asked questions

  • What is the difference between Cinvanti and Emend?

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Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
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Content is provided for education and is not medical advice. See our medical disclaimer.