Barrier Methods
The barrier method stops the sperm and egg meeting to prevent pregnancy.
There are three main types of barrier contraception:
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Condom (external and internal)
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Diaphragm/cap
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Contraceptive sponge
Condoms
How does it work?
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There are 2 types of condoms:
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Internal (female) condoms
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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
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Usually no medical side effects
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Easily accessible
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There is a lot of variety
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Disadvantages
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The disadvantages of condoms include:
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Interruption of sex
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Latex allergies
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Condoms splitting or slipping
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*:
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Problems with your vaginal muscles
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Regular urinary tract infections (UTIs)
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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
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Usually no medical side effects
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Disadvantages
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The disadvantages of a diaphragm or cap include:
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Lack of prevention against STIs
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Reaction to spermicide
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They can be difficult to insert
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*:
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Regular urinary tract infections (UTIs)
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Recently given birth or miscarried (or had a termination)
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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
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There is no interruption to sex
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There are usually no medical side effect
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Most people find it easy to use
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They can be used when breastfeeding
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Disadvantages
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The disadvantages of the sponge include:
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Lack of prevention against STIs
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Reaction to spermicide
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They can be difficult to insert
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*This is not an extensive list. Please see your doctor for further advice.
Sources and Useful links
https://www.cdc.gov/reproductivehealth/contraception/index.htm
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https://www.plannedparenthood.org/learn/birth-control/condom
https://www.plannedparenthood.org/learn/birth-control/internal-condom
https://www.plannedparenthood.org/learn/birth-control/birth-control-sponge
https://www.plannedparenthood.org/learn/birth-control/diaphragm
https://www.plannedparenthood.org/learn/birth-control/cervical-cap
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https://www.nhs.uk/conditions/contraception/male-condoms/
https://www.nhs.uk/conditions/contraception/female-condoms/
https://www.nhs.uk/conditions/contraception/contraceptive-diaphragm-or-cap/
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https://sh24.org.uk/contraception/male-condom
https://sh24.org.uk/contraception/female-condom
https://sh24.org.uk/contraception/diaphragm
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https://www.brook.org.uk/your-life/condoms/
https://www.brook.org.uk/your-life/internal-or-female-condoms/
https://www.brook.org.uk/your-life/diaphragms-and-caps/
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https://www.tht.org.uk/hiv-and-sexual-health/sexual-health/improving-your-sexual-health/condoms