What Is Femring?

Femring is a prescription vaginal ring that delivers Estradiol Acetate — a form of estrogen — to treat moderate-to-severe menopausal symptoms including hot flashes and vaginal atrophy.

Unlike low-dose vaginal estrogen products that only treat local symptoms, Femring delivers systemic levels of estrogen through the vaginal wall and into the bloodstream. This makes it one of the few vaginal ring options that can treat both vaginal dryness and whole-body menopausal symptoms like hot flashes and night sweats.

Key Facts About Femring

• Brand name: Femring
• Generic name: Estradiol Acetate
• Drug class: Estrogen (hormone replacement therapy)
• Manufacturer: Millicent Pharma (originally developed by Warner Chilcott, later acquired by Allergan)
• Generic available: No — Femring has no generic equivalent as of 2026
• Controlled substance: No — Femring is not a controlled substance and has no DEA scheduling
• How supplied: Vaginal ring for 3-month use

What Is Femring Used For?

Femring is FDA-approved for two indications:

• Moderate-to-severe vasomotor symptoms (hot flashes) — The hallmark symptoms of menopause: hot flashes, night sweats, and flushing. Femring's systemic estrogen delivery makes it effective for these whole-body symptoms.
• Moderate-to-severe vulvar and vaginal atrophy — Thinning, drying, and inflammation of vaginal tissues that occurs when estrogen levels drop during menopause. This can cause painful intercourse, vaginal irritation, and urinary symptoms.

Off-Label Uses

While not primary indications for Femring specifically, some providers may prescribe it for:

• Genitourinary syndrome of menopause (GSM) — A broader term for the urinary and vaginal changes of menopause
• Osteoporosis prevention — Estrogen therapy can help maintain bone density in postmenopausal women, though other medications are typically preferred for this purpose

How Is Femring Taken?

Femring is a flexible, soft vaginal ring that you insert yourself. Here's how it works:

Dosage Options

• Femring 0.05 mg/day — Contains 12.4 mg of Estradiol Acetate. This is the lower dose, typically the starting point.
• Femring 0.10 mg/day — Contains 24.8 mg of Estradiol Acetate. Your doctor may prescribe this higher dose if the lower dose doesn't adequately control your symptoms.

How to Use It

1. Insert the ring — Gently push the ring into the vagina as far as it can comfortably go. The exact position doesn't matter as long as it's comfortable — you shouldn't feel it once it's in place.
2. Leave it in for 3 months — The ring continuously releases estrogen for 90 days. You don't need to remove it for intercourse, bathing, or exercise.
3. Replace every 3 months — After 90 days, remove the old ring by hooking your finger through it and pulling gently. Insert a new ring immediately.
4. If it comes out — Rinse the ring in lukewarm water (not hot) and reinsert. If it slips out frequently, talk to your doctor.

Your doctor will start you on the lowest effective dose. The goal is to use the smallest amount of estrogen that controls your symptoms for the shortest time necessary.

Who Should Not Take Femring?

Femring is not appropriate for everyone. You should not use Femring if you have:

• Undiagnosed abnormal vaginal bleeding — Any unexplained bleeding needs evaluation before starting estrogen therapy
• Known or suspected breast cancer (or a history of breast cancer)
• Known or suspected estrogen-dependent tumors
• Active blood clots — including deep vein thrombosis (DVT) or pulmonary embolism, or a history of these conditions
• Active stroke or heart attack (or recent history of arterial clots)
• Liver disease or impairment
• Known clotting disorders — such as protein C, protein S, or antithrombin deficiency
• Allergy to Femring or any of its components
• Pregnancy — Femring is contraindicated during pregnancy

Important: If you still have your uterus, your doctor should prescribe a progestin alongside Femring to reduce the risk of endometrial cancer from unopposed estrogen. For a full breakdown of risks and side effects, see our Femring side effects guide.

Drug Interactions

Several medications can interact with Femring, including CYP3A4 inducers (like St. John's Wort, carbamazepine, and rifampin) that may reduce estrogen levels, and CYP3A4 inhibitors (like ketoconazole and ritonavir) that may increase them. Femring may also affect anticoagulants like warfarin and thyroid replacement medications. For the complete list, read our guide on Femring drug interactions.

How Much Does Femring Cost?

Femring is one of the more expensive menopause treatments on the market:

• Without insurance: $895 to $1,100 per ring (3-month supply)
• With insurance: Coverage varies widely. Many plans cover Femring but may require prior authorization or step therapy (trying cheaper estrogen products first). Medicare Part D plans may cover it with varying copays.
• No generic available: Without a generic option, there's no lower-cost equivalent of Femring.

There are ways to bring the cost down. Millicent Pharma has offered savings programs through Apollo Care, and prescription discount cards from GoodRx and SingleCare may help. For the full breakdown, see our complete guide to saving money on Femring.

Final Thoughts

Femring is a unique menopause treatment — the only vaginal ring that delivers systemic estrogen levels high enough to treat both vaginal symptoms and hot flashes. Its 3-month dosing schedule offers convenience that daily pills, patches, or creams can't match. But it comes with a significant price tag and important safety considerations, including the FDA's boxed warning about blood clots, stroke, and cancer risks.

If you and your doctor decide Femring is right for you, the next step is finding a pharmacy that has it in stock. Because it's a brand-name-only product, not every pharmacy keeps it on the shelf. Medfinder can help you locate a pharmacy with Femring available near you.

Learn more about Femring in our related guides:

• How Does Femring Work? Mechanism of Action Explained
• Femring Side Effects: What to Expect
• Femring Drug Interactions: What to Avoid
• How to Find Femring in Stock Near You