Jatenzo (testosterone undecanoate) is a brand-name drug that’s prescribed for testosterone deficiency in certain adults. Jatenzo comes as an oral capsule that’s typically taken twice per day. The dosage can vary depending on how much testosterone is needed.

Jatenzo belongs to a drug class called androgens (a type of hormone). Jatenzo is not available in a generic version.

Keep reading for specific information about the dosage of Jatenzo, including its strengths and how to take the medication. For a comprehensive look at Jatenzo, see this article.

Note: This article describes typical dosages for Jatenzo provided by the drug’s manufacturer. When taking Jatenzo, always follow the dosage prescribed by your doctor.

Below are details about Jatenzo’s dosage for testosterone deficiency in adult males. (Sex and gender exist on spectrums. Use of the term “male” in this article refers to sex assigned at birth.)

Jatenzo form

Jatenzo comes as an oral capsule.

Jatenzo strengths

Jatenzo comes in three strengths:

  • 158 milligrams (mg)
  • 198 mg
  • 237 mg

Typical dosages

Typically, your doctor will prescribe the recommended starting dosage for Jatenzo. Then they’ll adjust it over time to reach the amount that’s right for you. Your doctor will ultimately prescribe the smallest dosage that provides the desired effect.

The following information describes dosages that are commonly prescribed or recommended. However, be sure to take the dosage your doctor prescribes for you. Your doctor will determine the best dosage to fit your needs.

Dosage for low testosterone levels

At the start of treatment, the recommended dosage for Jatenzo is 237 mg twice per day.

After at least 7 days of taking Jatenzo, your doctor will check your testosterone level. They may adjust your Jatenzo dosage based on the result. They may prescribe a lower or higher dosage than your starting dosage.

Typical dosages for Jatenzo are as follows:

  • starting dosage: 237 mg twice per day
  • minimum dosage: 158 mg twice per day
  • maximum dosage: 396 mg twice per day

Long-term treatment

Jatenzo is meant to be used as a long-term treatment. If you and your doctor determine that Jatenzo is safe and effective for you, you’ll likely take it long term.

Talk with your doctor if you have questions about your dosage or your treatment plan.

Below are some frequently asked questions about Jatenzo’s dosage.

Can Jatenzo be used for bodybuilding? If so, what is the dosage?

No, the Food and Drug Administration (FDA) hasn’t approved Jatenzo for use in bodybuilding.

However, some people may misuse* drugs containing testosterone, such as Jatenzo, for bodybuilding. Misusing these types of drugs can lead to serious health problems, such as:

If you’re interested in bodybuilding, talk with your doctor about ways to safely achieve your goals.

* With misuse, a drug is taken in a way other than how a doctor prescribes it.

How does the dosage of Jatenzo compare with testosterone cypionate injection?

The recommended dosage for Jatenzo at the start of treatment is 237 milligrams (mg) twice per day. The typical dosage for testosterone cypionate (Depo-Testosterone) intramuscular injection is 50 mg to 400 mg every 2 to 4 weeks. If your doctor recommends testosterone cypionate injection, they’ll determine the dosage that’s right for you.

If you have questions about Jatenzo versus testosterone injections, talk with your doctor. To learn more about Jatenzo dosages, including the dosage range, see the “Jatenzo dosage” section above.

Jatenzo comes as an oral capsule that you’ll swallow. You’ll take one capsule in the morning and one capsule in the evening. Jatenzo should be taken with food.

Keep in mind that your doctor may adjust your dosage over time based on your testosterone level. Depending on your dosage, you may need to take two capsules twice per day.

If you have trouble swallowing capsules, see this article for tips on how to take this form of medication. You can also talk with your doctor or pharmacist.


Some pharmacies offer labels with large print, braille, or a code you scan with a smartphone to convert text to speech. If your local pharmacy doesn’t have these options, your doctor or pharmacist might be able to recommend a pharmacy that does.

If you’re having trouble opening medication bottles, ask your pharmacist about putting Jatenzo in an easy-open container. They also may recommend tools that can make it easier to open bottles.

If you miss a dose of Jatenzo, take it as soon as you remember. However, if it’s almost time for your next dose, skip the missed dose. Then, take your next dose when you typically would. Do not take two doses at once to make up for the missed one.

To help make sure that you don’t miss a dose, try using a medication reminder. This can include setting an alarm or putting a note where you’ll see it, such as on your bathroom mirror or bedside table. You could also download a reminder app on your phone.

It’s important that you do not take more Jatenzo than your doctor prescribes. For some medications, taking more than the recommended amount may lead to side effects or overdose. (To learn about side effects with Jatenzo, see this article.)

If you take more than the recommended amount of Jatenzo

Call your doctor right away if you believe you’ve taken too much Jatenzo. Another option is to call America’s Poison Centers at 800-222-1222 or use its online tool. If you have severe symptoms, immediately call 911 or your local emergency number, or go to the nearest emergency room.

The dosages in this article are typical dosages provided by the drug manufacturer. If your doctor recommends Jatenzo for you, they’ll prescribe the dosage that’s right for you. Always follow the dosage that your doctor prescribes.

As with any drug, never change your dosage of Jatenzo without your doctor’s recommendation. If you have questions about the dosage of Jatenzo that’s best for you, talk with your doctor.

Besides learning about dosage, you may want other information about Jatenzo. These additional articles might be helpful:

  • More about Jatenzo. For information about other aspects of Jatenzo, refer to this article.
  • Details about your conditions. For details about testosterone deficiency, see our men’s health hub.

Disclaimer: Medical News Today 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.