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What is an IUD

The IUD contraception is 99% effective.

The IUD, or intrauterine device, is a small contraceptive device inserted into the uterus. There are two main types:

1. The hormonal IUD, which is a small T-shaped device with a cylinder containing progestin hormone around its stem (e.g., Mirena, Kyleena)

2. The copper IUD, which is a small plastic device with copper wrapped around its stem.

How does the IUD work?

Uterus and IUD position
  • Both copper and hormonal IUDs provide contraception for 5 years.

  • Low-maintenance: no need to remember daily doses like the pill.

  • Cost-effective: while initial costs are higher, they're cheaper over 5 years.

  • Immediate fertility return upon removal, allowing for pregnancy attempts.

  • Hormonal IUDs like the Mirena IUD also reduce menstrual bleeding and pain.

Who should use an IUD?

  • People who do not or cannot take the pill.

  • People who are at very low risk of sexually transmitted disease.

  • People who have heavy or painful periods may see a huge benefit with the hormonal Mirena IUD.

  • People who want effective stress free long term contraception - set and leave.

Who should NOT use an IUD?

  • People who are at risk of sexually transmitted disease.

  • People who have unexplained bleeding or pelvic pain.

  • People with a pelvic inflammatory disease ( PID ). 

  • People who have been pregnant in the last 4 weeks.

What are the Advantages of the Mirena IUD ?

  • The Mirena IUD is more effective at preventing pregnancy than the copper IUD. First year failure rate 0.07 percent.

  • The Mirena IUD reduces menstrual bleeding and anemia.

  • The Mirena IUD can stop all menstrual bleeding after one year in 20% of women.

  • The Mirena IUD can reduce period pain.

  • The Mirena IUD can reduce endometriosis-related pain.

Mirena IUD

What are the disadvantages of the Mirena IUD ?

  • Irregular bleeding is likely in the first 4-6 months.

  • Your periods may greatly reduce to nothing.

  • It may increase the likelihood of vaginal dryness, acne, headaches, nausea or acne.

Mirena IUD device

Advantages of the Copper IUD

  • It has no hormonal side effects

  • It is for women who like having a monthly bleed

Copper IUD

Disadvantages of the Copper IUD

  • It may make your periods more painful and heavier. 

  • This may result in anemia.

Copper IUD

Disadvantages of the IUD

  • Both may be expelled from your body, so the strings need to be checked monthly.

  • There is a small risk of infection especially in the first 4 weeks, so protect yourself from sexually transmitted disease and no submerging your body into water.

  • Rarely if a pregnancy occurred with the IUD in place, it needs to be removed ASAP.

  • There is a risk of IUD perforating the uterus (usually with insertion) so we need an ultrasound to unsure your uterine cavity will fit it.

  • There is a very rare risk of ectopic pregnancy when the IUD fails.

  • Occasionally your anatomy may prevent the insertion of the IUD in the rooms, in which case you may require insertion under a general anaesthetic.

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