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Fertility Glossary

Oestrogen preparations

Tablets or patches used to build the lining in frozen transfer cycles.

Medicines & protocols

Oral oestradiol tablets, vaginal tablets and transdermal patches are all used to prepare the endometrium in medicated FET cycles. The route affects side effects and blood levels; your clinic chooses based on your response and history.

Also known as: estradiol tablets, oestrogen patches

Related Canada guides

Sources

  • Canadian Fertility and Andrology Society (CFAS)

Last reviewed: September 9, 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.

Related terms

Oestradiol

The main oestrogen, produced by growing follicles.

Frozen embryo transfer (FET)

Transfer of a thawed embryo in a later cycle.

Thin endometrium

A uterine lining that stays thinner than expected before transfer.

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