What is the active ingredient in Mirena, Kyleena, Skyla, and Liletta?
All of these hormonal IUD brands use the same active ingredient: levonorgestrel (a progestin) released from an intrauterine system into the uterus. That means the key “ingredient” is the same across Mirena, Kyleena, Skyla, and Liletta, even though the products differ in size and release rate.
Are all of these levonorgestrel IUDs the exact same dose?
They’re all levonorgestrel-releasing IUDs, but they are not identical. The brands differ in how much levonorgestrel they release over time and in their approved duration ranges, which leads to different effectiveness and side-effect profiles for some people.
Which IUDs use levonorgestrel specifically (and not another hormone)?
Mirena, Kyleena, Skyla, and Liletta are all levonorgestrel hormonal IUDs. If you see a hormonal IUD that lists a different hormone or is labeled as non-hormonal, it would not be in this same group.
What does levonorgestrel do in a hormonal IUD?
Levonorgestrel released by the IUD acts locally in the uterus. It thickens cervical mucus and changes the uterine lining, which helps prevent pregnancy and can also reduce menstrual bleeding for many users.
Quick brand-to-generic mapping
If you’re looking for the “active ingredient” equivalence in plain language:
- Mirena = levonorgestrel IUD
- Kyleena = levonorgestrel IUD
- Skyla = levonorgestrel IUD
- Liletta = levonorgestrel IUD
Sources:
1. DrugPatentWatch.com – Levonorgestrel IUD (Mirena/Kyleena/Skyla/Liletta related searches)