ellaOne is a morning after pill that you can take up to 120 hours after having unprotected sex. Order ellaOne online today from Asda Online Doctor.

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Prices from £33.00

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Emergency contraception for immediate use

30 mg - £33.00

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Emergency contraception for future use

30 mg - £33.00

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Frequently asked questions

What happens after you take ellaOne?

After you take ellaOne, it stops you from ovulating, so you won’t release an egg. This prevents pregnancy in up to 98% of people that take it. You might get side effects, such as nausea, headaches, or tiredness. These should go away within a few days, as you’re only taking 1 dose. You should check if you’re pregnant if your next period is later than 7 days.

How long does it take ellaOne to start working?

ellaOne starts to delay ovulation straight away, but you may need to retake it if you vomit within 3 hours. It won’t prevent you from getting pregnant if you have unprotected sex after taking it.

How long does ellaOne delay ovulation?

ellaOne delays ovulation for at least 5 days (120 hours), which is the lifespan of a sperm once it enters the female reproductive system. Taking ellaOne delays ovulation for long enough that you are very unlikely to get pregnant. It can delay your period because of this.

Does ellaOne work after ovulation?

No, ellaOne works to delay ovulation so it won’t work if you’ve already ovulated. It can be difficult to work out if you’ve already ovulated, but it usually happens 14 days before your period starts if you have a 28 day cycle. If you aren't sure, one of our doctors can help.

When is the best time to take ellaOne?

The best time to take ellaOne is within 24 hours of unprotected sex. Although it can be effective within 5 days, it’s most effective the sooner you take it. It doesn’t matter what time of day you take ellaOne but it’s best to take it as soon as you get it.

How long do the side effects of ellaOne last?

Side effects of ellaOne should only last a few hours to a few days. As you only need one ellaOne pill, side effects won’t come back unless you need to take another.

Can I still be pregnant after taking ellaOne?

Yes, ellaOne is not 100% effective, although it’s unlikely if you take it correctly and before ovulation. You can reduce the chances of getting pregnant after taking ellaOne by:

  • taking it within 5 days of having unprotected sex (the sooner the better)
  • using another form of contraception if you have sex after taking ellaOne, even if it’s on the same day
  • speaking to a doctor or pharmacist about another dose if you vomit within 3 hours of taking it
  • swallowing your tablet whole

Can taking ellaOne cause a hormonal imbalance?

No, ellaOne doesn’t cause a hormonal imbalance and there have been no reports of ellaOne causing fertility problems.

How much does ellaOne cost?

This depends on where you get it from. You can buy ellaOne from a pharmacy or online. ellaOne prices start from £33.00 at Asda Online Doctor, which includes free aftercare in your private patient account.

Some services offer the morning after pill for free, but this could be the ellaOne pill or an alternative pill. It’s best to ask your local pharmacy or sexual health clinic.

Can I get ellaOne without a prescription?

Yes, you can get ellaOne without a prescription, although a pharmacist or healthcare provider will need to check your suitability by asking a few questions. This is to make sure that ellaOne is safe for you to take, and that it’ll be effective.

Medically reviewed by:
Dr Babak Ashrafi Clinical Lead for Service Expansion

Babak studied medicine at King’s College London and graduated in 2003, having also gained a bachelor’s degree in Physiology during his time there. He completed his general practice (GP) training in East London, where he worked for a number of years as a partner at a large inner-city GP practice. He completed the Royal College of GPs membership exam in 2007.

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Last reviewed: 08 May 2024

(Reviews are for ZAVA UK)

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You might need emergency contraception if you’ve recently had unprotected sex and want to reduce your risk of getting pregnant. Asda Online Doctor by ZAVA offers a morning after pill service, which includes a variety of options.

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