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Drugs and diseases reference index

Drugs reference index «Teslac»


Generic Name: testolactone (test O lack tone)Brand Names: Teslac

What is Teslac (testolactone)?

Testolactone blocks the production of the hormone estrogen. Certain types of breast cancer require estrogen to grow.

Testolactone is used to treat some types of breast cancer.

Testolactone may also be used for purposes other than those listed in this medication guide.

What is the most important information I should know about Teslac (testolactone)?

Testolactone should not be used for the treatment of men with breast cancer or in patients with a history of allergic reactions to the drug.

What should I discuss with my healthcare provider before taking Teslac (testolactone)?

Testolactone should not be used for the treatment of men with breast cancer or in patients with a history of allergic reactions to the drug.

Testolactone is in the FDA pregnancy category C. This means that it is not known whether testolactone will be harmful to an unborn baby. Do not take this medication without first talking to your doctor if you are pregnant or could become pregnant during treatment. Testolactone passes into breast milk in small amounts and may affect a nursing baby. Do not take testolactone without first talking to your doctor if you are breast-feeding a baby.

How should I take Teslac (testolactone)?

Take testolactone exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.

Take each dose with a full glass (8 ounces) of water.

It is important to take testolactone regularly to get the most benefit.

Your doctor may want you to have breast exams (or to perform self breast exams), mammograms, blood tests, or other medical evaluations during treatment with testolactone to monitor progress and side effects.

Store testolactone at room temperature away from moisture and heat. Keep this product out of the reach of children.

See also: Teslac dosage in more detail

What happens if I miss a dose?

Take the missed dose as soon as you remember. However, if it is almost time for the next dose, skip the missed dose and take only the next regularly scheduled dose. Do not take a double dose of this medication unless your doctor directs otherwise.

What happens if I overdose?

Call an emergency room or a poison control center for advice if you suspect an overdose.

Symptoms of a testolactone overdose are unknown, but nausea, vomiting, seizures, tremor, or dizziness may be expected.

What should I avoid while taking Teslac (testolactone)?

There are no restrictions on food, beverages, or activity during treatment with testolactone unless otherwise directed by your doctor.

Teslac (testolactone) side effects

Stop taking testolactone and seek emergency medical attention or contact your doctor immediately if you experience any of the following serious side effects:
  • an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives);

  • new breast lumps;

  • bone pain;

  • menstrual changes, abnormal vaginal bleeding, vaginal discharge, or pelvic pain or pressure; or

  • excessive nausea, vomiting, or thirst.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.

What other drugs will affect Teslac (testolactone)?

Before taking testolactone, tell your doctor if you are taking

  • an estrogen such as Premarin, Ogen, Estratest, Estraderm, Vivelle, Climara, and others;

  • a birth control pill that contains estrogen;

  • warfarin (Coumadin) or another blood thinner.

You may not be able to take testolactone or you may require special monitoring or a dosage adjustment if you are taking any of the medicines listed above.

Drugs other than those listed here may also interact with testolactone. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines, including herbal products.

Where can I get more information?

  • Your pharmacist has additional information about testolactone written for health professionals that you may read.

What does my medication look like?

Testolactone is available with a prescription under the brand name Teslac. Other brand or generic formulations may also be available. Ask your pharmacist any questions you have about this medication, especially if it is new to you.

  • Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
  • Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.
Copyright 1996-2006 Cerner Multum, Inc. Version: 2.01. Revision Date: 4/27/05 10:41:15 AM.
  • Teslac Prescribing Information (FDA)
  • Teslac Advanced Consumer (Micromedex) - Includes Dosage Information
  • Teslac MedFacts Consumer Leaflet (Wolters Kluwer)