Kyleena (Levonorgestrel)

Kyleena, a progestin intrauterine system, is used for contraception and related menstrual management.

• Prevention of pregnancy: provides highly effective, long‑acting reversible contraception for up to five years.
• Long‑acting reversible contraception: offers a convenient, hormone‑based method that does not require daily dosing.
• Reduction of menstrual bleeding: may lessen menstrual blood loss and dysmenorrhea in some users.

• Kyleena releases levonorgestrel locally within the uterine cavity. The hormone thickens cervical mucus, impairs sperm motility and function, suppresses endometrial proliferation, and may inhibit ovulation. These combined actions create an environment that prevents fertilisation and implantation, thereby providing reliable contraception.

Common Side Effects

• Irregular bleeding or spotting: unpredictable bleeding patterns, especially during the first months.
• Pelvic pain or cramping: discomfort around the insertion site.
• Headache: mild to moderate tension‑type headaches.
• Breast tenderness: transient sensitivity or swelling.

Serious or Rare Side Effects

• Uterine perforation: rare injury to the uterine wall during insertion.
• Pelvic infection: signs include fever, foul discharge, or severe pain.
• Expulsion of the device: the IUS may be partially or fully expelled, reducing efficacy.

Before insertion, several safety steps should be observed.

• Confirm non‑pregnancy: verify the patient is not pregnant prior to placement.
• Assess uterine anatomy: ensure appropriate uterine size and orientation for device fit.
• Screen for active infection: avoid insertion in the presence of pelvic or cervical infection.
• Counsel on bleeding changes: inform patients about possible irregular bleeding patterns.
• Store at room temperature: keep in the original packaging, protect from moisture and direct sunlight.

Levonorgestrel released from Kyleena may interact with systemic medications that affect hormone metabolism.

Major Interactions (Avoid)

• Rifampin and other strong enzyme inducers: may lower levonorgestrel levels and reduce efficacy.
• Anticonvulsants such as carbamazepine or phenytoin: can increase hormone metabolism.
• Antiretroviral drugs like efavirenz: may diminish contraceptive effectiveness.

Moderate Interactions (Monitor Closely)

• Certain antibiotics (e.g., tetracycline): slight reduction in hormone activity, monitor bleeding.
• Herbal supplements such as St. John’s wort: may induce hepatic enzymes, observe for breakthrough bleeding.
• Hormonal therapies (e.g., combined oral contraceptives): generally safe but may be unnecessary when using Kyleena.