Approved indications: Liletta is indicated to prevent pregnancy for up to 8 years (with removal or replacement by the end of year 8) and to treat heavy menstrual bleeding for up to 5 years in patients who also want intrauterine contraception.

Off-label uses: Some clinicians may use levonorgestrel 52 mg intrauterine systems off-label for endometrial protection during estrogen therapy, for certain types of endometrial hyperplasia, or for menstrual suppression and pelvic pain related to conditions like endometriosis; evidence is moderate and based largely on studies of the levonorgestrel 52 mg IUS class rather than Liletta-specific trials, so these uses are individualized.

Contraceptive efficacy expectations: In large U.S. trials, Liletta prevents more than 98% of pregnancies cumulatively over 8 years, with an annual pregnancy risk well under 1% and no loss of effectiveness in people with higher body weight, making it comparable in efficacy to Mirena and more effective than pills, patches, or rings when used in typical practice.

Heavy menstrual bleeding efficacy: For heavy menstrual bleeding, most patients see noticeably lighter periods within 1–3 months, median blood loss falls by over 90% by about 6 months, and around 80% of users meet strict success criteria (large reduction to normal-range blood loss), similar to or better than other medical treatments and often avoiding hysterectomy.

Onset and reversibility: Contraceptive protection is immediate if Liletta is placed within 7 days of menstrual bleeding starting; otherwise backup contraception is advised for 7 days, and fertility typically returns quickly after removal, with most people who are trying to conceive becoming pregnant within about a year.

Typical dosing and how it is given: Liletta is supplied as a single 52 mg levonorgestrel intrauterine system that is inserted into the uterine cavity by a trained healthcare professional using a sterile, single-use inserter; no daily action is required by the patient, and the same device and dose are used regardless of body weight or parity within reproductive age.

Duration of use by indication: For contraception alone, Liletta can remain in place for up to 8 years before it must be removed or replaced; when used to treat heavy menstrual bleeding, it should be replaced by the end of 5 years if ongoing treatment is needed, though it can be removed at any time if pregnancy is desired or side effects occur.

Timing and special instructions: Insertion is often scheduled during or just after a period, postpartum once the uterus has involuted, or at another time when pregnancy can reasonably be excluded; if placed more than 7 days after menstrual bleeding begins, backup contraception (such as condoms) is recommended for 7 days, and patients are usually advised to feel for the strings monthly and attend a follow-up visit 4–6 weeks after insertion and then at routine intervals.

Missed-dose or late-use guidance: Because Liletta is a device rather than a pill, “missing a dose” means the IUD has been expelled, removed, or left in longer than the approved duration; if strings cannot be felt, the device seems to have come out, or it has been in place beyond 8 years (or 5 years for heavy menstrual bleeding), patients should use backup contraception and contact their clinician promptly for examination and replacement or removal.

Overdose and removal: Overdose is very unlikely because only one device is placed at a time, but if more than one device were inserted, or if severe pain, heavy bleeding, or systemic symptoms occur after placement, urgent medical evaluation is needed so the device can be assessed and removed if necessary; only a healthcare professional should remove Liletta.

Common side effects: Very common effects include changes in bleeding (more spotting or irregular or heavier bleeding for the first 3–6 months, then usually lighter or absent periods), vaginal yeast or bacterial infections, acne, headaches, nausea, breast tenderness, abdominal or pelvic pain, pain with sex, mood changes (including anxiety or depression), back pain, mild weight gain, and increased or unusual vaginal discharge; these are usually mild to moderate and often improve over time.

Serious or rare adverse effects: Serious problems are uncommon but include ectopic pregnancy if pregnancy occurs, severe pelvic infection (pelvic inflammatory disease or endometritis), sepsis in the days after insertion, uterine perforation (the device going into or through the uterine wall), device expulsion (coming out of the uterus), and symptomatic ovarian cysts; severe lower abdominal pain, fever, foul discharge, very heavy bleeding, sudden severe dizziness, or missed periods with pain warrant urgent medical care.

Key warnings and precautions: Liletta should not be used in people who are or may be pregnant, need emergency contraception, have unexplained vaginal or uterine bleeding, current pelvic infection or recent infected pregnancy/abortion, a uterus whose shape is distorted by fibroids or other anomalies, known or suspected breast or other hormone-sensitive cancer, uterine or cervical cancer, acute liver disease or liver tumors, or allergy to any component; it is used cautiously in those with bleeding disorders or on anticoagulants, severe migraines, uncontrolled high blood pressure, or a history of serious arterial disease such as stroke or heart attack.

Pregnancy, breastfeeding, and age considerations: Liletta is contraindicated in pregnancy and must be removed if pregnancy occurs because of higher risks of miscarriage, infection, and preterm birth; in breastfeeding patients, it can be used but carries a slightly higher risk of uterine perforation when inserted soon after delivery, so timing of placement is individualized, and it is intended for patients of reproductive age who can become pregnant.

Comparative safety: Because Liletta releases levonorgestrel mainly inside the uterus and only low levels enter the bloodstream, it generally has fewer systemic hormone-related risks (such as blood clots) than estrogen-containing contraceptives, and its overall safety profile is similar to other levonorgestrel 52 mg IUDs, with most complications (perforation, expulsion, infection) being rare and clustered around the time of insertion.

Reporting side effects and safety updates: Patients can report side effects directly to the FDA MedWatch program online or by calling 1-800-FDA-1088, and updated safety information is available through the FDA, the manufacturer’s website, and official prescribing information.

Drug and supplement interactions: Because levonorgestrel from Liletta acts primarily inside the uterus and produces low blood levels, clinically important interactions with most prescription medicines, over-the-counter drugs, or supplements are unlikely, but it is still important to tell the clinician about all medications, including anticoagulants, other hormonal therapies, and herbal products; there are no specific food restrictions, and alcohol does not directly affect the device.

Other products and procedures: Liletta does not protect against HIV or other sexually transmitted infections, so barrier protection may still be recommended; MRI and most imaging procedures can be performed safely with the device in place, but patients should inform imaging staff that they have an IUD before the exam.

Conditions that require extra caution or make use unsafe: Liletta is contraindicated in people with active or recent pelvic infection, unexplained abnormal uterine bleeding, uterine or cervical cancer, known or suspected breast or other progestin-sensitive cancers, severe liver disease or liver tumors, a uterine cavity distorted by fibroids or congenital anomalies, or a current intrauterine device; careful assessment is needed in those with clotting disorders, on blood thinners, with severe migraines, very high blood pressure, or major cardiovascular disease.

Monitoring and follow-up: Recommended monitoring includes a pelvic exam and assessment shortly after insertion (typically at 4–6 weeks) to confirm position and review bleeding or side effects, then routine gynecologic follow-up (such as annual visits) with string checks; additional evaluation is warranted if there is new pelvic pain, abnormal discharge, sudden changes in bleeding, or inability to feel the strings.

When to seek urgent care: Patients should seek prompt medical attention for severe lower abdominal pain, fever or chills, foul-smelling discharge, very heavy or prolonged bleeding, symptoms of pregnancy (especially with pain, which could signal ectopic pregnancy), or suspicion that the IUD has moved or come out.

Q: What is Liletta and how long does it last?
A: Liletta is a hormonal intrauterine device (IUD) that slowly releases levonorgestrel in the uterus to prevent pregnancy for up to 8 years and, when indicated, to treat heavy menstrual bleeding for up to 5 years.

Q: How soon does Liletta start working to prevent pregnancy?
A: If it is inserted within 7 days of the start of your period, it works right away; if inserted at another time in the cycle, you should use backup contraception such as condoms for the first 7 days after placement.

Q: How will Liletta affect my periods?
A: Many people have more spotting or irregular bleeding in the first 3–6 months, after which periods usually become lighter, shorter, or may stop altogether, which is expected and not harmful if pregnancy has been ruled out.

Q: Can I use Liletta if I have never been pregnant?
A: Yes, Liletta has been studied in and can be used by both people who have given birth and those who have never been pregnant, as long as their uterus is a suitable shape and they do not have other contraindications.

Q: How is Liletta removed, and how quickly can I get pregnant afterward?
A: A clinician removes Liletta in the office by gently pulling on the strings, and fertility returns quickly once it is out, with many people able to conceive within months if there are no other fertility problems.

Q: Does Liletta protect against sexually transmitted infections (STIs)?
A: No, Liletta only provides contraception (and heavy menstrual bleeding treatment when indicated); it does not protect against HIV or other STIs, so condoms or other barrier methods are still recommended if infection risk is present.