Testosterone

Testosterone is a naturally occurring hormone in the body, primarily produced in the testicles. It plays a crucial role in male development and health.

It may be used in medical treatments to address conditions related to hormone deficiencies or imbalances.

Information about Testosterone

Testosterone Uses

Testosterone is commonly prescribed for conditions related to low levels of this hormone.

Treatment of male hypogonadism
Delayed puberty in boys
Hormone therapy in transgender men
Management of certain types of breast cancer in women

How Testosterone Works

Testosterone works by supplementing or replacing the natural hormone in the body. It helps in developing and maintaining male sexual characteristics.

It also supports muscle and bone health, contributes to mood regulation, and affects fat distribution.

Common side effects of Testosterone

Not everyone experiences side effects, and many are mild and temporary. If you have concerns, consult your healthcare provider.

Acne
Increased hair growth
Mood changes
Fluid retention
Changes in libido
Headache
Injection site reactions

If you experience serious or persistent symptoms, contact your doctor.

CONTENT DETAILS

Written By

Douglas C. Goldberg, MD

Reviewed By

Philip Schein, MD

Last updated

28 Nov 2025 | 03:00 PM (UTC)

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Expert advice for Testosterone

Inform your doctor about any other medications you are taking to avoid interactions.
Avoid excessive alcohol consumption while on testosterone therapy.
Monitor your symptoms and report any unusual changes to your healthcare provider.
Do not use testosterone if you have certain health conditions without consulting a doctor first.
Regular blood tests may be needed to monitor your hormone levels and health status.

Always follow your healthcare provider’s guidance regarding testosterone therapy.

Frequently Asked Questions

What does testosterone do in the body?

Testosterone is responsible for the development of male characteristics, such as facial hair and muscle growth, and it supports overall health.

How long does it take for testosterone to work?

The effects of testosterone can vary, but some changes might be noticed within a few weeks. Full benefits may take longer.

Is testosterone therapy safe?

Testosterone therapy is generally safe when monitored by a healthcare provider, but it can have side effects and risks that need to be managed.

Can testosterone interact with other medications?

Yes, testosterone can interact with other medications. It’s important to inform your doctor about all the drugs you are taking.

Can women use testosterone?

In certain cases, testosterone may be prescribed to women, such as for specific types of breast cancer or to address hormone imbalances.