How effective is the morning after pill after 3 days?
Levonelle is the most commonly prescribed emergency contraceptive pill in the UK (it goes by the name Plan B in the US and Canada). It must be taken within 72 hours (3 days) of sexual intercourse. Levonelle is: 95% effective if taken within 12 hours of unprotected sex.
If you take it within 72 hours after you've had unprotected sex, levonorgestrel can reduce the risk of pregnancy by up to 89%. If you take Plan B One-Step within 24 hours, it is about 95% effective. But you should know that Plan B One-Step is not as effective as regular contraception.
- The morning after pill is actually quite safe and it can be used as often as it is needed. So you can definitely use it twice in one week. However, you might want to think about a better form of primary contraception. The morning after pill does have several side effects, such as bloating, nausea, etc.
- It is not uncommon to experience changes to your menstrual cycle after taking the morning after pill. Your next period may be lot heavier or lighter than it normally is. Taking the emergency contraceptive pill three or more days after your usual ovulation date is likely to make it come late.
- Side effects of the morning-after pill, which typically last only a few days, might include:
- Nausea or vomiting.
- Breast tenderness.
- Bleeding between periods or heavier menstrual bleeding.
- Lower abdominal pain or cramps.
If you are using Levonelle as a precaution after unprotected sex, then it must be taken within 72 hours after the event. It is considered to be 95% effective when taken within 12 hours. 24-48 hours after intercourse it is 75% effective and it is only 58% effective if taken between 48-72 hours after intercourse.
- If you take it within 72 hours after you've had unprotected sex, levonorgestrel can reduce the risk of pregnancy by up to 89%. If you take Plan B One-Step within 24 hours, it is about 95% effective. But you should know that Plan B One-Step is not as effective as regular contraception.
- Both types of emergency contraception are effective at preventing pregnancy if they are used soon after unprotected sex. Less than 1% of women who use the IUD get pregnant, whereas pregnancies after the emergency contraceptive pill are not as rare. It's thought ellaOne is more effective than Levonelle.
- How does the plan B® morning-after pill work? plan B® comes in a one-pill dose. If taken within 72 hours (3 days) and preferably within 12 hours after a contraceptive accident or unprotected sex, it can prevent pregnancy by doing one of three things: Temporarily stops the release of an egg from the ovary.
Updated: 18th November 2019