The Contraceptive Diaphragm Cervical Cap

The contraceptive diaphragm, also called the cervical cap, is a dome made of soft, thin silicone that's inserted into the vagina before sex. A diaphragm or cap is a barrier method of contraception. It fits inside your vagina and prevents sperm passing through the cervix (the entrance of your womb).

You need to use it with a gel that kills sperm (spermicide).

You only have to use a diaphragm or cap when you have sex, but you must leave it in for at least 6 hours after the last time you had sex. You can leave it in for longer than this, but do not take it out before.
You need to apply more spermicide if you have sex again with the diaphragm or cap in place or if the diaphragm or cap has been in place for 3 hours or more before you have sex.
Do not take the diaphragm or cap out to reapply spermicide.


  • You only need to use a diaphragm or cap when you want to have sex.
  • There are usually no serious associated health risks or side effects.
  • You can put it in at a time convenient to you before having sex ( remember to use extra spermicide if you have it in for more than 3 hours before intercourse).


  • It is not as effective as other types of contraception and this depends largely on your remembering to use it and doing so correctly.
  • It doesnt provide reliable protection against STI's.
  • Cystitis (bladder infections) can be a recurrent problem for some women who use the diaphragm or cap.

(Perfect use means using the method correctly each time. Typical is when you do not always use it correctly)

As a fully qualified member of FMH, Gynäkologie Suisse, E.S.A.G. & ISCG
Dr Wagner is highly qualified and has many years of experience, allowing her to offer first-class advice and treatment of the highest standard in her boutique practice in the heart of Basel.

Don't hesitate to call +41 (0) 61 666 62 10 for an appointment, or book online today.