For patients
Low-dose aspirin
ASA, baby aspirin, acetylsalicylic acid 81mg
Are you a clinician? See the clinical version of this page.
The short versionLow-dose aspirin is often recommended in pregnancy to lower the chance of pre-eclampsia, especially if you have lupus or antiphospholipid antibodies. It is different from regular-dose anti-inflammatory painkillers and is considered compatible through pregnancy and breastfeeding.
- Low-dose aspirin is used to lower the chance of pre-eclampsia if you are at higher risk.
Through your pregnancy journey
Use if needed
Before pregnancy
May be started when planning if you are at higher risk; your team will advise.
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First trimester
Usually started in the first trimester if you have lupus or antiphospholipid antibodies.
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Second & third trimester
Usually continued through pregnancy (often to around 36 weeks or as advised).
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Breastfeeding
Low-dose aspirin is considered compatible with breastfeeding.
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For fathers-to-be
Not relevant to fathers for pregnancy; compatible generally.
iThis page helps you prepare a conversation with your care team. It does not replace individual medical advice. Always confirm your own plan with your rheumatology and pregnancy team.
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When to call your team
- Confirm your aspirin plan with your team; do not confuse low-dose aspirin with regular painkillers.
- Report any unusual bleeding.