
What is the morning-after pill?
The morning-after pill stops you from becoming pregnant, after unprotected sex.
Although lots of people talk about the morning-after pill, this term is actually misleading.
In reality, the traditional type of tablet works for up to 72 hours (three days) after sex – not just the morning after. And the newer version, introduced in 2010, should work for up to FIVE days after intercourse.
But the earlier you take it, the better: the morning-after pill works best if taken within 12 hours of unprotected sex.
Medical professionals don't use the term morning after pill. They call it the post-coital pill (PCP) or – in Britain – the emergency contraceptive (EC).
Taking the emergency contraceptive used to involve taking TWO pills, separated by an interval. But these days, you only have to swallow a single tablet.
How does it work?
It works by:
- preventing your ovaries from releasing an egg
- altering the lining of your womb, so that an egg can't embed itself there.
It does not causes abortions. And it won't work if you're already pregnant.
What are the side-effects?
The commonest unwanted effects are:
- nausea
- mild menstrual irregularity – so your next period may be slightly early or late
- low abdominal pain
- headache
- Vomiting.
If you throw up within TWO hours of taking a it tablet, you've probably lost it. So you need to take another one.
Severe lower tummy pain could just possibly indicate an ectopic pregnancy, because it isn't so good at preventing those. Contact a doctor immediately.
If you're supposed to be on the Pill, the the mini-Pill, the vaginal contraceptive ring or the contraceptive patch, you can continue using your current method after taking it. But you should either avoid sex or employ condoms until the doctor tells you that you are safe from pregnancy.
How effective are ECs?
Neither type of morning-after pill is 100 per cent effective, but the failure rate is quite low. It's probably well under 10 per cent, and rather better than that if you take it as early as possible.
Who is it useful for?
The morning-after pill is now widely used by women who have had unprotected sex. In particular, it has proved of value to:
- rape victims, who should insist that they are given it (unfortunately, UK doctors who examine these victims have sometimes been slow to prescribe it)
- couples who have a condom break during sex
- women who have been lured into having sex, while under the influence of drink or drugs.
Is it dangerous to use?
Not at all. If anybody tells you that it has 'lots of side-effects' or 'makes you dreadfully sick', don't believe them.
An older form of PCP used in the 1990s did often cause severe nausea, but today's post-coital pills cause very little trouble.
Personally, I have never seen any severe side-effects from either type of PCP. But you can find more details about possible side-effects from the package leaflet.
How do I take it?
As soon as possible, just swallow it with some water.
Indeed, because of the urgency, I usually advise patients to ask the chemist for a glass of water, so they can take it right away.
Any other warnings?
- Your next period may come early or late. If it doesn't arrive within a couple of days of the expected time, see a doctor.
- The morning-after pill does not protect you from pregnancy for the rest of your menstrual cycle. So either abstain from sex or use a barrier method like a condom.
- The morning-after pill is not good at protecting against ectopic pregnancies, although these are rare. If you get lower tummy pain or abnormal bleeding in the weeks after using it, see your doctor.
If it doesn't work, could the tablet harm the unborn baby?
We simply don't know the answer to this question.
No research has shown any increase in abnormalities among babies whose mothers took the morning-after pill. But past experience does show that other hormones taken in early pregnancy have harmed children.