Emergency contraceptive pill (ECP)
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You can take the emergency contraceptive pill (ECP) — to prevent pregnancy — after unprotected sex. It has also been called the morning after pill.
It's best to use the ECP in the three days after unprotected sex — but four days is okay for most people. Unprotected sex is when you have sex without a condom or oral dam.
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The ECP is:
- Typically, 98% effective at preventing pregnancy for people under 70kg
- Easy to get and easy to use
The ECP isn't:
- As effective as other types of contraception.
- Protection against sexually transmissible infections (STIs) — condoms and oral dams can protect against STIs
- For pregnant people — it won’t cause an abortion if you’re already hapū
- Used as a regular type of contraception — it's best to use it for emergencies only
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Please know: If somebody pressured you to have sex that you didn’t want to have — or if somebody forced you to have sex with them — can help you get support. If you are unsafe, you can use the Shielded Site tool at the bottom of this page and every page on our website to contact Women's Refuge, or to find information that might help. The Sexual Harm Helpline is free, confidential, and available 24/7. You can contact trained specialists by:
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Calling: 0800 044 344
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Texting: 4334
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Emailing: support@safetotalk.nz
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Chatting online at: safetotalk.nz
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When do you need emergency contraception?
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If you’ve had sex without contraception
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If your normal contraception fails — like a condom breaking
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If you’ve missed one or more contraceptive pills — talk with us, you may or may not need the ECP depending on how you normally take your pill
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You’ve been vomiting (throwing up) or had diarrhoea (runny poos) while on the pill
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You’ve missed your contraceptive injection
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How does the ECP work?
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The ECP does:
- Stop or delay the release of an egg from your ovaries — until the sperm in your body aren’t active anymore
- Prevent sperm from fertilising your egg by changing the way sperm moves in your body
The ECP doesn’t:
- Work once your egg has been fertilised
- Harm you or a developing embryo
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What else do you need to know about the ECP?
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The ECP:
- Contains progestogen — a very safe hormone
- Doesn't make it harder for you to become hapū in the future
- Isn’t harmful if you use it more than once
- Won’t cause an abortion if you’re already hapū
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How well does the ECP work?
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If you weigh less than 70kg, the ECP is typically 98% effective at preventing pregnancy.
Don’t worry!
Most people weigh more than 70kg. We can give you two ECPs — or you might be able to use the copper IUD for emergency contraception. The copper IUD can be put in up to five days after you’ve had unprotected sex.
The copper IUD is more than 99% effective at preventing pregnancy. If you want, the copper IUD can be left in and used for long term contraception.
Make sure you let us know if you are taking any other medication when you see us for an ECP.
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What are the advantages and disadvantages of the ECP?
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Advantages:
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Can be used if another type of contraception fails
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Reduces your chance of pregnancy after unprotected sex
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Can be used up to 72 hours after unprotected sex
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You can get and keep an ECP for future use
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Available from our clinics, pharmacies, and many other healthcare providers
Disadvantages:
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Should ideally be taken no more than 72 hours after unprotected sex — but may work for up to 96 hours
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You need to take two pills if you — like most adults in Aotearoa — weigh more than 70kg
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Doesn’t work once your egg has been fertilised
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What are the side effects or risks of the ECP?
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Some people have mild side effects when they take the ECP. Side effects can include:
- Nausea (feeling sick)
- Vomiting (throwing up)
It’s a good idea to take the ECP with food — this helps with the nausea.
If you vomit within three hours of taking the ECP, you’ll need to get another dose.
There’s a very small risk of an ectopic pregnancy if the ECP fails.
Ectopic pregnancy is pregnancy outside the uterus. This can occur with any pregnancy, and can be dangerous. If you have cramping or bleeding, come see us, or your regular doctor.
If you think you might be pregnant, do a pregnancy test 3-4 weeks after you use the ECP.
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Does the ECP protect you from STIs?
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The ECP doesn’t protect you from sexually transmissible infections (STIs).
Condoms, oral dams, and lube are your best protection against STIs.
If you’ve had sex without a condom or oral dam, it’s a good idea to get an STI check.
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Can you use the ECP as your regular contraception?
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It’s not a good idea to use the ECP as your regular contraception.
The ECP isn’t as effective as other types of contraception. It’s a good idea to have your contraception sorted before you have sex.
The ECP doesn’t protect you from sexually transmissible infections (STIs).
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Can you get the ECP in advance?
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You can get the ECP from us, or your regular doctor, with a prescription. It’s a good idea to keep an ECP around — just in case you have an emergency.
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How do you get the ECP?
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You can get the ECP from us, or your regular doctor, with a prescription. You can buy the ECP from most pharmacies — but it can be a bit expensive.
If you buy the ECP from a pharmacy, it’ll usually cost $35-$50.
The ECP is free with a prescription.
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How we can help you
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We are sexual wellness experts. You might find it scary or embarrassing to talk about getting the ECP — but we’ve seen and heard it all before.
Anyone can visit our clinics. If you want to talk to us, we want to talk to you.
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Do you need urgent help?
If you require medical advice outside of our opening hours, call Healthline for free on 0800 611 116 anytime or get help from an after-hours medical centre or emergency services.