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Detailed medicine guidance

Who can and cannot take anastrozole

NHS medicines information on who can take anastrozole and who may not be able to take it.

About this information

This NHS content is written for people in England. Medicine names, availability, prescribing and services may differ in other countries.

Who can take anastrozole

Most adults aged 18 years old and over can take anastrozole.

Who may not be able to take anastrozole

Anastrozole is not suitable for some people. To make sure it's safe for you, tell your doctor before starting to take it if you:

  • have ever had an allergic reaction to anastrozole or any other medicine
  • still have periods
  • are pregnant, trying to get pregnant or breastfeeding
  • have severe kidney or liver disease
  • have been told you have fragile or brittle bones (osteoporosis)
  • have an allergy to lactose

View the original NHS website page ↗. Refreshed 19 August 2026.

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