Use in Cancer

Tamoxifen citrate is approved to treat:

• Breast cancer in women and men.

Tamoxifen citrate is also approved to prevent:

• Breast cancer in women who are at high risk for the disease.

Tamoxifen citrate is also being studied in the treatment of other types of cancer.

More About Tamoxifen Citrate

Definition from the NCI Drug Dictionary - Detailed scientific definition and other names for this drug.

MedlinePlus Information on Tamoxifen Citrate - A lay language summary of important information about this drug that may include the following:

• warnings about this drug,
• what this drug is used for and how it is used,
• what you should tell your doctor before using this drug,
• what you should know about this drug before using it,
• other drugs that may interact with this drug, and
• possible side effects.

Drugs are often studied to find out if they can help treat or prevent conditions other than the ones they are approved for. This patient information sheet applies only to approved uses of the drug. However, much of the information may also apply to unapproved uses that are being studied.

Hormone Therapy for Breast Cancer - Information about the use of this drug to prevent and treat cancer.

Targeted Cancer Therapies - Information about the use of this drug to treat cancer.

Research Results

Clinical Trial Results: Ten Years of Tamoxifen Reduces Breast Cancer Recurrences, Improves Survival - Important clinical trial results for this drug, background information, and how the trial was done.

Clinical Trial Results: Exemestane Following Tamoxifen Reduces Breast Cancer Recurrences and Prolongs Survival - Important clinical trial results for this drug, background information, and how the trial was done.

Clinical Trial Results: Study Confirms Letrozole Prevents More Breast Cancer Recurrences Than Tamoxifen - Important clinical trial results for this drug, background information, and how the trial was done.

Clinical Trial Results: Long-Term Data from 20 Trials Confirm Tamoxifen’s Long-Lasting Benefit - Important clinical trial results for this drug, background information, and how the trial was done.

Clinical Trial Results: Tool Weighs Benefits, Risks of Raloxifene or Tamoxifen to Prevent Breast Cancer - Important clinical trial results for this drug, background information, and how the trial was done.

Clinical Trial Results: Five Years of Tamoxifen Continues to Benefit Women 15 Years after Treatment - Important clinical trial results for this drug, background information, and how the trial was done.

The Study of Tamoxifen and Raloxifene (STAR): Questions and Answers - Information from the NCI Press Office about this drug.