Cervical Cap

What is it?

The cervical cap is a barrier method of birth control that is to be used when you anticipate (expect) that you will be having sex.  The cervical cap is a flexible rubber or latex cup that fits over the cervix.

How does it work?

The woman must insert the cap high into the vagina and cover the opening to the cervix.  The cap can now act as a barrier, preventing sperm from getting through the cervix and into the uterus (where pregnancy occurs).  During intercourse, the vagina moves, and may cause the cap to move, so it is important to use spermicide along with the cap for added protection against pregnancy.

Remember, the cervical cap protects against pregnancy but it DOES NOT protect you from Sexually Transmitted Infections (STIs).

How effective is it?

With the addition of spermicide, the cervical cap is 82% effective. However, women who have been pregnant or who have had pelvic surgery will have a 64-80% effectiveness rate against pregnancy.

Possible Side Effects

• Allergy to rubber or to the chemical in spermicide (nonoxynol-9)
• The cervical cap may produce an odour if left in place too long
• Toxic shock syndrome may develop if the cervical cap is left in for too long (greater than 24 hours)

The cervical cap is a good choice for you, IF:

• You prefer a non-hormonal type of birth control

The cervical cap is not for you, IF:

• You are uncomfortable with insertion and removal of the device
• You or your partner are allergic to spermicide, rubber, or latex
• You have just gave birth, had an abortion, or other pelvic surgery
• You require birth control while menstruating (the cap can not be used when having your period)

Important points

• Wash your hands before you touch and insert the cervical cap

• Apply a spermicide before inserting the cervical cap. Reapply the spermicide for each act of intercourse (sex) without taking the cap out.
• The cervical cap should not be removed sooner than 8 hours after having sex and should not stay in for longer than 24 hours.
• Always use water-based lubricants or moisturizers.  Oil-based products break down the cap.

• Wash your cervical cap with a mild soap after use.  Dry it before storing away from heat and light.

• Always carry your cervical cap and spermicide with you!
• To determine the correct size of the cervical cap, your doctor will perform an internal medical exam.  If you do not have a family doctor, one can be provided for you at the Health Unit.

For additional information on the cervical cap or other questions related to sexual health contact the Windsor Essex County Health Unit at (519) 258-2146 ext 1200 or 1201

The Society of Obstetricians and Gynaecologists of Canada. (2000). Sex Sense:

Canadian Contraceptive Guide. Ottawa, ON.

The Society of Obstetricians and Gynaecologists of Canada. (2000). Choosing a

contraceptive that’s right for you…. Ottawa, ON.

Limburg, J. Middlesex-London Health Unit. (1998) Birth Control Options. London, ON.

Reviewed May 1, 2007

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