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  • Basic Info
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Generic: letrozole
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Certain types of breast cancer grow under the influence of estrogen
               



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What is this medicine?

LETROZOLE (LET roe zole) blocks the production of estrogen. Certain types of breast cancer grow under the influence of estrogen. Letrozole helps block tumor growth. This medicine is used to treat advanced breast cancer in postmenopausal women.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:
  • liver disease
  • osteoporosis (weak bones)
  • an unusual or allergic reaction to letrozole, other medicines, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast- feeding

How should I use this medicine?

Take this medicine by mouth with a glass of water. You may take it with or without food. Follow the directions on the prescription label. Take your medicine at regular intervals. Do not take your medicine more often than directed. Do not stop taking except on your doctor's advice.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medicine?

Do not take this medicine with any of the following medications:
  • estrogens, like hormone replacement therapy or birth control pills

This medicine may also interact with the following medications:

  • dietary supplements such as androstenedione or DHEA
  • prasterone
  • tamoxifen

What should I watch for while using this medicine?

Visit your doctor or health care professional for regular check- ups to monitor your condition.

Do not use this drug if you are pregnant. Serious side effects to an unborn child are possible. Talk to your doctor or pharmacist for more information.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells.

               
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