Treatment for glioblastoma (GBM)
Intended for US audiences only.

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Small. Light. Designed for everyday life.

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Optune is small and light weighing just 2.7 pounds. This makes Optune wearable and portable, so continuous treatment with Optune can be received almost anywhere.

The recommendation to turn Optune on at least 75% of the time (18 hours per day) gives you the flexibility to decide which times of the day are best for you. You can customize your Optune treatment plan by taking breaks during the day.

The system offers features designed to enhance carrying comfort and usability:

  • Easy-grip texture allows for simple handling
  • Battery indicator displays power and alerts you when it’s time to change the battery
  • Light-detecting sensor auto-dims the device and the charger in the dark

Other components include:

  • Portable batteries: 4 batteries are provided with each kit; each battery lasts for 2 to 3 hours
  • Charger for portable batteries: Batteries will need to be recharged for 2 to 4 hours. The batteries can be charged and used many times over the course of 6 to 9 months
  • Plug-in power supply and power cords: “No-Stop Swap” enables you to swap batteries or power source without disrupting delivery of TTFields

Applying transducer arrays

Optune delivers therapy through 4 adhesive patches, called transducer arrays. These arrays are applied to your scalp. They are powered through the connection cable and box, which is powered by the battery. If you or your loved one is starting treatment with Optune, applying transducer arrays will soon become a part of your routine. With the help of a caregiver, your head will be shaved and arrays changed at least 2 times per week (one set of arrays should not be worn for more than 4 days at a time).

You can cover transducer arrays with breathable head coverings

  • If you’d like, you can wear a breathable head covering like a cap, hat, head wrap, or loose-knit wig over the transducer arrays. For more suggestions from Optune users, visit OptuneDailyLife.com

Optune gives you flexibility to decide what works best for you

  • A large clinical study showed that Optune should be turned on for at least 75% of the time (18 hours per day) to get the best response from treatment
  • Optune offers you the ability to bank hours for a special occasion, which means that you can take treatment breaks on one or more days, as long as you make up the hours on other days over the course of a month. Here’s how you might structure a day that totals 21 hours with Optune turned on, 3 hours more than the recommended 18 hours:
Structuring a day that totals 21 hours with Optune® turned on, leaves 3 hours of use for another day Structuring a day that totals 21 hours with Optune® turned on, leaves 3 hours of use for another day

*Since Optune was turned on for 3 hours more than the recommended 18 hours per day minimum, 3 hours can be used for a special event or activity later on.

What is Optune® approved to treat?

Optune is a wearable, portable, FDA-approved device indicated to treat a type of brain cancer called glioblastoma multiforme (GBM) in adult patients 22 years of age or older.

Newly diagnosed GBM

If you have newly diagnosed GBM, Optune is used together with a chemotherapy called temozolomide (TMZ) if:

Recurrent GBM

If your tumor has come back, Optune can be used alone as an alternative to standard medical therapy if:

Who should not use Optune?

Optune is not for everyone. Talk to your doctor if you have:

Do not use Optune if you are pregnant or are planning to become pregnant. It is not known if Optune is safe or effective during pregnancy.

What should I know before using Optune?

Optune should only be used after receiving training from qualified personnel, such as your doctor, a nurse, or other medical staff who have completed a training course given by Novocure®, the maker of Optune.

What are the possible side effects of Optune?

Most common side effects of Optune when used together with chemotherapy (temozolomide, or TMZ) were low blood platelet count, nausea, constipation, vomiting, tiredness, scalp irritation from the device, headache, seizure, and depression.

The most common side effects when using Optune alone were scalp irritation (redness and itchiness) and headache. Other side effects were malaise, muscle twitching, fall and skin ulcers.

Talk to your doctor if you have any of these side effects or questions.


Please click here to see the Optune Instructions for Use (IFU) for complete information regarding the device's indications, contraindications, warnings, and precautions.

On this site, patient and healthcare professional videos as well as all images labeled as Optune users, caregivers, or healthcare professionals depict actual patients, caregivers, and healthcare professionals. All other depictions of patients and caregivers are actor portrayals. Patient images reflect the health status of the patients at the time each photo was taken.

What is Optune approved to treat?

Optune is indicated to treat a type of brain cancer called glioblastoma multiforme (GBM) in adult patients 22 years of age or older.