Elahere (mirvetuximab soravtansine-gynx) is a prescription drug that’s used to treat certain types of ovarian cancer. The drug is given by a healthcare professional as an intravenous (IV) infusion, usually once every 3 weeks.

Elahere is used in adults to treat certain types of:

Note: Healthcare professionals may refer to the cancers listed above as ovarian cancer. This is because cancers of the peritoneum and fallopian tubes often resemble cancer of the ovaries and are treated in a similar way.

The active ingredient in Elahere is mirvetuximab soravtansine-gynx.* (An active ingredient is what makes a drug work.) Elahere belongs to a group of drugs called antineoplastics.

This article describes Elahere’s dosage, as well as its strength and how you’ll receive it. To learn more about Elahere, see this in-depth article.

* The reason “-gynx” appears at the end of the drug’s name is to show that it is distinct from similar medications that may be created in the future.

This section describes the usual dosages of Elahere. Keep reading to learn more.

What is Elahere’s form?

Elahere is available as a liquid solution. The drug is given as an intravenous (IV) infusion (an injection into your vein over a period of time).

What strength does Elahere come in?

Elahere comes in one strength of 100 milligrams in 20 milliliters of solution (mg/mL).

What are the usual dosages of Elahere?

The information below describes dosages that are commonly used or recommended. Your doctor will determine the best dosage to fit your needs.

Dosage for certain types of ovarian cancer

The typical Elahere dosage for adults is 6 milligrams per kilogram of body weight (mg/kg). You’ll receive an infusion every 3 weeks in a doctor’s office or a clinic.

Is Elahere used long term?

Yes, Elahere is usually a long-term treatment. If you and your doctor determine that it’s safe and effective for your condition, you’ll likely receive the drug long term.

The dosage of Elahere your doctor prescribes may depend on several factors. These include:

  • your weight
  • whether you experience side effects from the drug

Elahere is available as a liquid solution that’s given as an intravenous (IV) infusion (an injection into your vein over a period of time). You’ll receive infusions at your doctor’s office or a clinic.

Before you receive your dose of Elahere, your doctor may prescribe certain medications to help prevent side effects of Elahere. Examples of these medications include Tylenol (acetaminophen), prednisone, and Benadryl (diphenhydramine).

If you miss an appointment to receive a dose of Elahere, call your doctor’s office as soon as possible to reschedule.

If you need help remembering your appointments, try setting an alarm or downloading a reminder app on your phone.

Below are answers to some commonly asked questions about Elahere’s dosage.

How does Elahere’s dosage compare with the dosage of similar drugs, such as Lynparza?

The forms of Elahere and Lynparza (olaparib) and how often you take each drug are different. Elahere is given as an intravenous (IV) infusion (an injection into your vein over a period of time) by a healthcare professional. Lynparza is an oral tablet.

The dose in milligrams (mg) for each drug differs. Your doctor will prescribe the drug and dosage that’s right for you.

To learn more about how these drugs compare, talk with your doctor.

How long does it take for Elahere to start working?

Elahere starts to work after your first dose. Because of how the drug works, you likely won’t feel Elahere working in your body. But your doctor will monitor you during treatment to check whether the drug is working to treat your condition.

If you have other questions about what to expect from your Elahere treatment, talk with your doctor.

The sections above describe the usual dosage provided by the manufacturer. If your doctor recommends Elahere for you, they’ll prescribe the dosage that’s right for you.

Talk with your doctor if you have questions or concerns about your current dosage.

Here are some examples of questions you may want to ask your doctor:

  • Do you need to change my dosage of Elahere, given the other medications I currently take?
  • If the drug is working for my condition, but I have bothersome side effects, will you need to change my dosage?
  • If I miss a doctor’s visit to get Elahere, will you adjust my dosing schedule?

To learn more about Elahere, see these articles:

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Disclaimer: Healthline has made every effort to make certain that all information is factually correct, comprehensive, and up to date. However, this article should not be used as a substitute for the knowledge and expertise of a licensed healthcare professional. You should always consult your doctor or another healthcare professional before taking any medication. The drug information contained herein is subject to change and is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. The absence of warnings or other information for a given drug does not indicate that the drug or drug combination is safe, effective, or appropriate for all patients or all specific uses.