NuvaRing vs. Mirena
See how NuvaRing and Mirena compare on approved uses, dosing, side effects, and cost.
Key Takeaways
NuvaRing is a monthly vaginal ring using estrogen and progestin, while Mirena is a progestin-only IUD placed by a clinician and left in for years.
NuvaRing requires monthly self-insertion and carries estrogen-related clot risks, while Mirena is inserted once and can also treat heavy periods.
NuvaRing offers user control without a procedure, while Mirena offers years of protection without daily or monthly upkeep.
NuvaRing vs. Mirena Drug Summary
NuvaRing
NuvaRing is a combination hormonal contraceptive containing etonogestrel and ethinyl estradiol, delivered through a flexible vaginal ring. It's inserted for three weeks, removed for a ring-free week, and replaced each month to prevent pregnancy.
Mirena
Mirena is a hormonal intrauterine system that releases levonorgestrel, a progestin, directly into the uterus. It's placed by a clinician and can prevent pregnancy for up to 8 years, or treat heavy menstrual bleeding for up to 5 years.
NuvaRing vs. Mirena Side Effects
NuvaRing
Mirena
NuvaRing vs. Mirena Dosage
NuvaRing
Mirena
| STAGE | DOSE | WHEN |
| Starting dose | 1 ring vaginally | Weeks 1-3 |
| Maximum dose | ring-free interval | Week 4 |
| Dose changes | 1 increase | Every 3 weeks |
| STAGE | DOSE | WHEN |
| Starting dose | ~21 mcg/day LNG release | Day 24 |
| Maximum dose | ~7 mcg/day LNG release | If needed |
| Dose changes | 2 increases | As tolerated |
NuvaRing
| STAGE | DOSE | WHEN |
| Starting dose | 1 ring vaginally | Weeks 1-3 |
| Maximum dose | ring-free interval | Week 4 |
| Dose changes | 1 increase | Every 3 weeks |
Mirena
| STAGE | DOSE | WHEN |
| Starting dose | ~21 mcg/day LNG release | Day 24 |
| Maximum dose | ~7 mcg/day LNG release | If needed |
| Dose changes | 2 increases | As tolerated |
NuvaRing vs. Mirena Indications
NuvaRing
NuvaRing is FDA-approved solely for pregnancy prevention in women choosing a hormonal contraceptive. It is not approved for emergency contraception or for women over 35 who smoke, due to increased cardiovascular risk.
Prevents pregnancy when used as directed
Not approved for emergency contraception
Not recommended for women over 35 who smoke
Requires monthly ring change and correct insertion
Mirena
Mirena is FDA-approved both to prevent pregnancy for up to 8 years and to treat heavy menstrual bleeding for up to 5 years in women who also want contraception. It is not approved for emergency contraception.
Prevents pregnancy for up to 8 years
Treats heavy menstrual bleeding for up to 5 years
Requires in-office placement and removal
Not approved for emergency contraception
NuvaRing vs. Mirena Pros and Cons
NuvaRing
NuvaRing gives patients full control over insertion and removal without a clinical procedure, and generic versions can lower its monthly cost. Like other estrogen-containing contraceptives, it carries a boxed warning for cardiovascular risk in smokers and needs monthly replacement for as long as it's used.
Pros
User-controlled insertion and removal, no procedure needed
Can be taken out at any time by the patient
Generic versions available, which can lower cost
Produces a predictable, regular withdrawal bleed
Cons
Requires monthly self-insertion and a ring-free week
Carries a boxed warning for VTE and cardiovascular risk
Not safe for women over 35 who smoke
Must be replaced every month for as long as it's used
Mirena
Mirena requires a single clinician visit for placement and then works for years without daily or monthly effort, making it appealing for long-term use. It has no estrogen-related warnings, but insertion involves a procedure and irregular bleeding is common in the first few months.
Pros
Lasts up to 8 years without daily or monthly action
Also FDA-approved to treat heavy menstrual bleeding
Contains no estrogen, an option for those who avoid it
Often leads to lighter periods or no periods over time
Cons
Requires a clinician visit for insertion and removal
Higher upfront cost, and no generic version exists
Irregular bleeding is common in the first few months
Small risk of uterine perforation or expulsion at insertion
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