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Other names: tubal occlusion

WHAT IS FEMALE STERILISATION?

Female sterilisation, also known as tubal occlusion, is an procedure permanently prevent pregnancy and involves cutting, sealing, or blocking the fallopian tubes which carry an egg from the ovary to the uterus (womb). It is a non-reversible form of birth control, so it is only a choice for women who never want to have children, or who don't wish to have any more.

 

A note on gender

Gender identification is a personal journey. Not everyone with a male body is a man and not everyone with a female body is a woman. This information is for people of all genders including transgender, non-binary and intersex individuals.

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OVERVIEW

EFFICACY

EFFICACY

99%+

FREQUENCY

FREQUENCY

PERMANENT

EFFECT ON FERTILITY

EFFECT ON FERTILITY

PERMANENT

BLOOD CLOT RISK

BLOOD CLOT RISK

SMALL RISK

HOW DOES FEMALE STERILISATION PREVENT PREGNANCY?

During female sterilisation, the fallopian tubes (the tubes that carry the eggs) are blocked or sealed.

This prevents the eggs from reaching the sperm and becoming fertilised.

HOW EFFECTIVE IS FEMALE STERILISATION?

Apart from abstinence, female sterilisation is the most effective method of contraception. Female sterilisation is more than 99% effective at preventing pregnancy. It’s rare for a tubal occlusion to fail. Sterilisation may fail if the tubes that carry the sperm or eggs rejoin, straight away or some years later.

PERFECT USE*

99
%
+

Effective

Approximately

1 out of every 100 women
in a year will experience an unintended pregnancy.

 

* Perfect use of a contraceptive method is when it is used correctly all the time.

TYPICAL USE*

99
%
+

Effective

Approximately

1 out of every 100 women
in a year will experience an unintended pregnancy.

 

*Typical use is what generally happens in real life. It takes into account human error e.g. forgetting to take your pill. Typical use is the same as perfect use for female sterilisation.

PP-UN-WHC-GB-0308 July 2025