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Barrier Methods

The barrier method stops the sperm and egg meeting to prevent pregnancy.

There are three main types of barrier contraception:

 

  • Condom (external and internal)

  • Diaphragm/cap

  • Contraceptive sponge

Condoms

How does it work?

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There are 2 types of condoms:

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  • Internal (female) condoms

  • External (male) condoms

 

The internal condom is placed inside the vagina and lines it.

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The external condom is placed on the erect penis.

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How long does it last?

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A new condom should be used each time you have sex.

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Who can use it?

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Most people can use condoms. However, if you have a latex allergy you should use latex-free condoms.

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How effective is it?

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The condom is approximately 95-98% effective if used perfectly and 82-87% effective with typical use.

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Advantages

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There are many advantages to using condoms:

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  • Protection against STIs and HIV

  • Usually no medical side effects

  • Easily accessible

  • There is a lot of variety

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Disadvantages

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The disadvantages of condoms include:

 

  • Interruption of sex

  • Latex allergies

  • Condoms splitting or slipping

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Diaphragm or Cap

How does it work?

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A diaphragm or cap is inserted into the vagina and covers the cervix.

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They should be used with spermicide to be more effective.

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How effective is it?

 

The diaphragm or cap is approximately 92-96% effective if used perfectly and with spermicide and 71-88% effective with typical use.

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Who can use it?

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Most women can use a diaphragm or cap.

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However, they may not be suitable if you have*:

 

  • Problems with your vaginal muscles

  • Regular urinary tract infections (UTIs)

  • A personal history of toxic shock syndrome or sensitivity to spermicide.

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Advantages

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Using a diaphragm or cap has its advantages such as:

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  • No interruption to sex

  • Usually no medical side effects

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Disadvantages

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The disadvantages of a diaphragm or cap include:

 

  • Lack of prevention against STIs

  • Reaction to spermicide

  • They can be difficult to insert

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Contraceptive Sponge

How does it work?

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The contraceptive sponge is a small sponge containing spermicide which is inserted into the vagina and covers the cervix.

 

It should be left inside the vagina for at least 6 hours after sex.

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How long does it last?

 

A new sponge should be used each time you have sex.

 

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How effective is it?

 

The sponge is approximately 80-90% effective if used perfectly and 76-88% effective with typical use.

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Who can use it?

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Most women can use a contraceptive sponge.

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However, they may not be suitable if you have*:

 

  • Regular urinary tract infections (UTIs)

  • Recently given birth or miscarried (or had a termination)

  • History of toxic shock syndrome or sensitivity to spermicide

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Advantages

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The sponge has its advantages such as:

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  • It is non-hormonal

  • There is no interruption to sex

  • There are usually no medical side effect

  • Most people find it easy to use

  • They can be used when breastfeeding

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Disadvantages

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The disadvantages of the sponge include:

 

  • Lack of prevention against STIs

  • Reaction to spermicide

  • They can be difficult to insert

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*This is not an extensive list. Please see your doctor for further advice.

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Sources and Useful links
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