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Diaphragm/cap with spermicide Effectiveness: Latex types are 92–96 per cent effective if used correctly. Between four and eight women in 100 will get pregnant in a year. Silicone caps are less effective. How it works: A flexible latex (rubber) or silicone device, used with spermicide, is put into the vagina to cover the cervix. This stops sperm from entering the uterus and meeting an egg. Advantages: • Can be put in any time before sex. • May protect against some sexually transmitted infections and cancer of the cervix. • A variety of types to choose from. • No serious health risks. Disadvantages: • Putting it in can interrupt sex. • Extra spermicide is needed if you have sex again. • Cystitis can be a problem for some diaphragm users. • Can take time to learn how to use correctly. Comments: • Correct size needs to be known and you need to replace it if you gain or lose more than 3kg (seven pounds), have a baby, miscarriage or abortion. |