Mirena (Levonorgestrel)

Levonorgestrel, the active ingredient in Mirena, is a progestin presented as a 52 mg intrauterine system for intrauterine use. It treats contraception, heavy menstrual bleeding, and endometriosis‑associated pain in women of reproductive age.

GNH USA supplies Mirena as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Levonorgestrel in Mirena is indicated for hormonal contraceptive and menstrual‑management pathways.

Contraception: provides up to five years of highly effective birth control. Heavy menstrual bleeding: reduces menstrual blood loss and improves anemia. Endometriosis‑associated pain: alleviates pelvic pain related to endometriosis.

Common Side Effects: - Irregular bleeding or spotting - Amenorrhea (absence of periods) - Abdominal or pelvic pain - Breast tenderness - Headache - Acne

Serious or Rare Side Effects: - Uterine perforation during insertion or removal - Pelvic inflammatory disease or severe infection - Ovarian cyst formation - Severe allergic reaction (anaphylaxis)

Before insertion, several safety considerations should be reviewed.

Pregnancy testing: confirm non‑pregnant status prior to placement. Smoking: avoid use in women over 35 who smoke due to cardiovascular risk. Uterine anomalies: assess for fibroids, septum, or malformations before insertion. Breast cancer: contraindicated in current or past breast cancer. Medication review: evaluate concomitant drugs that may affect levonorgestrel efficacy. Store at ambient temperature: keep in original packaging, protect from moisture and direct sunlight.

Levonorgestrel may interact with medicines that alter hormone metabolism.

Major Interactions (Avoid): - Enzyme inducers (e.g., rifampicin, carbamazepine): may markedly reduce levonorgestrel levels. - Potent antifungal azoles (e.g., ketoconazole): may increase levonorgestrel exposure and side‑effects.

Moderate Interactions (Monitor Closely): - Certain antibiotics (e.g., tetracycline, metronidazole): may slightly lower contraceptive efficacy. - Antiepileptics (e.g., phenytoin): may decrease hormone concentrations. - Herbal supplements (e.g., St. John’s wort): may reduce effectiveness of the device.