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Emergency Contraception

Contraceptive failure or having unprotected sex can be a stressful situation. The risk of pregnancy can be reduced by taking the emergency contraceptive pill (ECP). The ECP is most effective the sooner it is taken. As getting to the Doctor is not always possible or practical our accredited ECP pharmacists are available to provide you with a consultation and are able to dispense the ECP if it is appropriate for you.

The ECP’s effectiveness

The emergency contraceptive pill will be most effective if you take it as soon as possible after unprotected sex. Taking the ECP within 24 hours is best, but it can prevent pregnancy if taken up to 72 hours after unprotected sex.

The ECP has been shown to prevent:

  • 95% of expected pregnancies when taken within 24 hours of unprotected sex
  • 85% if taken within 25 - 48 hours
  • 58% if taken within 49 - 72 hours

It’s important to note that the ECP does not protect against sexually transmitted infections (STIs). If you have any concerns speak with your Unichem Pharmacist, doctor or family planning clinic.

Possible side effects

You may experience the following side effects but they should resolve within a few days:

  • Breast tenderness
  • Dizziness
  • Headache
  • Nausea
  • Tiredness
  • Vomiting

If vomiting occurs within three hours of taking the ECP, another dose should be taken immediately. 

Your next period will probably come at the expected time, but it may be early or late, and it could be heavier than usual.

You should make an appointment to see your doctor immediately if:

  • Your next period is unusually light or heavy, more than 5 days late or, if you’re taking oral contraceptives and there is no bleeding in the pill-free interval
  • If you have any lower abdominal pain

Some precautions to take


It’s recommended that you use a barrier contraceptive (condoms) until your next period.

If you use a contraceptive pill, keep taking the hormonal pills as normal and use additional barrier protection for seven days. If you have less than seven hormonal pills left in the packet, you should continue with the next pack and omit the seven day break or placebo (sugar) tablets.


The emergency contraceptive pill is generally safe to take while breastfeeding, but check with your Pharmacist or doctor if you are concerned.

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