Diaphragm/cap with spermicide

How effective is it?

Latex diaphragm (caps) are 92–96% effective if used correctly. Between four and eight women in 100 will get pregnant in a year. Silicone diaphragm (caps) are less effective.

How does it work?

The diaphragm is a flexible latex or silicone device, used with spermicide.  It is put into the vagina to cover the cervix. This stops sperm from entering the uterus and meeting an egg.

What are the advantages?

The diaphragm (cap) be put in any time before sex.
You only have to use it when you have sex.
There are no serious health risks.

What are the disadvantages?

Putting the diaphragm (cap) in can interrupt sex.
Extra spermicide is needed if you have sex again.
Some people can be sensitive to spermicide.
Cystitis can be a problem for some diaphragm users.
It can take time to learn how to use the diaphragm correctly.

Anything else I should know?

The correct size needs to be known and you need to replace it if you gain or lose more than 3kg (7lbs), have a baby, miscarriage or abortion.