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Injecting yourself with blood thinners - information for obstetric patients

Blood thinning injections prevent new blood clots from forming and keep existing clots from getting bigger. Blood thinning injections should be administered once a day, unless your prescription tells you otherwise.

Before injecting yourself with blood thinners

  • Check the expiry date on the medicine and do not use if the date has passed
    • If the date has passed, please return the medicine to the pharmacy
  • Check the syringe is not damaged and the liquid inside is clear
    • If you notice damage, or if the liquid is not clear, use another syringe instead
  • Always read the leaflet that comes in the pack with your medicine

How to inject yourself

The syringe is for single use only.

Your midwife, doctor or pharmacist will be able to help you if you have any questions or are unsure about how to inject your blood thinners.

It’s very important to close and make sure the sharp bin is locked before returning it to be disposed of, as this reduced the risk of a sharps injury. 

Never put needles or sharp bins in your household waste.

If you get any side effects, please talk to your doctor, pharmacist or midwife, even if the side effects are not listed in the pack leaflet. This will allow quick identification of new safety information. This medicine is subject to additional monitoring. 

Last reviewed: 26 January 2023