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

Most common
vaginitis (up to 13.8%)
mood changes (up to 6.4%)
device-related events (up to 6.3%)
nausea/vomiting (up to 5.9%)

Mirena

Most common
abdominal/pelvic pain (up to 22.6%)
amenorrhea (up to 18.4%)
headache/migraine (up to 16.3%)
genital discharge (up to 14.9%)

NuvaRing vs. Mirena Dosage

NuvaRing

Dosage
Dosage Table
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

Dosage
Dosage Table
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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