Pregnancy, breastfeeding and fertility while taking anastrozole - Brand name: Arimidex

Anastrozole and pregnancy

Anastrozole is not recommended when pregnant.

This is because it affects hormone levels in you and your baby. There's not enough information available to say if it's safe.

Talk to your doctor straight away if there's any chance that you could be pregnant.

Anastrozole and breastfeeding

Anastrozole is not recommended while you're breastfeeding.

There's no information about how much anastrozole passes into breast milk but it's likely to be a fairly high amount compared to most other medicines.

Anastrozole affects hormones, which may affect how your baby develops.

Anastrozole and fertility

Anastrozole is generally only given to you if you have gone through the menopause.

However, some people find that they start having periods again after taking anastrozole. If this happens to you, it's important to use reliable contraception.

Talk to your doctor if your periods start again, or if there's any chance you could be pregnant.