Progesterone Supplements Miscarriage Complete
If you've had bleeding in early pregnancy, or you've lost a pregnancy before, your GP or the early pregnancy unit (EPU) may talk to you about progesterone supplements. It's a reasonable question to have — progesterone sounds like a fix, but it's only offered in specific circumstances, and it isn't a guarantee. Here's what it does, who it's for, and what to expect if it's prescribed.
What progesterone does in pregnancy
Progesterone is a hormone made naturally by the ovaries (and later the placenta) that helps maintain the lining of the womb and supports early pregnancy. Some women with a history of miscarriage, particularly when combined with bleeding in the first trimester, are thought to have lower progesterone levels or a weaker response, which is why supplementation is sometimes considered.
- It's usually given as a vaginal pessary, though oral tablets are also used in some cases.
- It's typically started as soon as bleeding is reported and continued until around 16 weeks if the pregnancy is progressing well.
- It is not offered to everyone with a positive pregnancy test — it's specifically for women who meet certain criteria after assessment.
Who is it usually offered to
NHS guidance generally reserves progesterone supplementation for women who have both:
- Vaginal bleeding in early pregnancy, and
- A history of one or more previous miscarriages.
If you've had bleeding but no previous loss, or a previous loss but no bleeding this time, your midwife or GP may still discuss it with you, but it's more likely to be offered when both factors are present. Your care team will look at your individual history before making a recommendation, so it's always worth asking directly if you think it might apply to you.
Side effects and safety
Progesterone supplements are generally well tolerated. Most women report very mild or no side effects at all. Possible effects include:
- Mild nausea
- Breast tenderness
- Drowsiness (more common with oral tablets)
- Local irritation with vaginal pessaries
If you notice anything that feels wrong, or the bleeding gets heavier rather than settling, contact your midwife, GP, or EPU rather than waiting for your next appointment.
What happens if you're not offered it
Not being offered progesterone doesn't mean nothing can be done, and it doesn't mean your pregnancy is at higher risk than someone who is offered it. Many women with early bleeding and previous losses go on to have straightforward pregnancies with monitoring alone — a follow-up scan is often the main next step to check things are progressing as expected.
Frequently Asked Questions
Can progesterone supplements prevent miscarriage?
Progesterone supplements may help reduce the risk of miscarriage in women who have both bleeding in early pregnancy and a history of previous miscarriage. It isn't a treatment for miscarriage that has already started, and it isn't offered as a routine precaution for everyone — your GP or EPU will assess whether it's appropriate for your situation.
How is progesterone given and for how long?
It's most commonly given as a vaginal pessary inserted once or twice daily, though oral tablets are used in some cases. If prescribed, it's typically continued through the first trimester, often until around 16 weeks, alongside monitoring such as follow-up scans.
What should I do if I think I need it but haven't been offered it?
Speak to your GP, midwife, or local early pregnancy unit, especially if you're bleeding and have had a previous miscarriage. They can assess your history and symptoms and let you know whether progesterone or another form of monitoring is right for you.
This article is for informational purposes only and does not constitute medical advice.
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