Differences

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--- mirena [2026/07/04 06:45] – [Introduction] gary1
+++ mirena [2026/07/04 06:47] (current) – [Duration of action] gary1
@@ Line 21: / Line 21: @@
   *a Mirena lasts for up to 8 years when used for contraception(([[https://pubmed.ncbi.nlm.nih.gov/36096186/|2022: Contraceptive efficacy and safety of the 52-mg levonorgestrel intrauterine system for up to 8 years: findings from the Mirena Extension Trial ]]))(([[https://www1.racgp.org.au/newsgp/clinical/mirena-lifespan-extended-to-eight-years]]))
     * if used on those 45 or older when it is inserted, it can often remain in place for contraception until menopause is reached
-  *when using it to treat heavy menstrual bleeding, endometriosis, or as part of menopausal hormone therapy (MHT/HRT), it needs to be replaced or removed after 5 years
+  *when using it to treat heavy menstrual bleeding, endometriosis, or as part of menopausal hormone therapy (MHT/HRT), it may need to be replaced or removed after 5 years, although if used for heavy bleeding, it can be used up to 8 years if it effectively controls bleeding
     * hormone dosage decreases over time, which may allow heavy periods or symptoms to return
     * for MHT, it should be replaced at the 5-year mark to safely balance oestrogen effects