Levonorgestrel Richter (Levonorgestrel)

• Levonorgestrel Richter acts within the hormonal contraceptive pathway to prevent pregnancy and manage menstrual disorders.
• Contraception (levonorgestrel‑releasing intrauterine system): provides continuous, reversible birth control for up to several years.
• Emergency contraception: prevents implantation when administered shortly after unprotected sex.
• Heavy menstrual bleeding: reduces menstrual blood loss and improves cycle regularity.

• Levonorgestrel binds to progesterone receptors in the endometrium, cervical mucus, and hypothalamic‑pituitary axis. This progestogenic activity suppresses ovulation, thickens cervical mucus to impede sperm penetration, and induces endometrial changes that make implantation unlikely, thereby delivering contraceptive and anti‑menorrhagic effects.

Levonorgestrel may cause a range of adverse reactions, most of which are mild and transient.

Common Side Effects

• Irregular bleeding or spotting
• Amenorrhea (absence of periods)
• Abdominal or pelvic pain
• Breast tenderness
• Headache
• Nausea

Serious or Rare Side Effects

• Uterine perforation during insertion
• Device expulsion or displacement
• Pelvic inflammatory disease
• Severe allergic reaction (anaphylaxis)
• Thrombosis (rare)
• Hormone‑related mood changes

• Before using Levonorgestrel Richter, patients should be evaluated for contraindications and educated on device care.
• Assess contraindications: confirm no current pregnancy, active pelvic infection, or uterine anomalies.
• Review medical history: note bleeding disorders, hormone‑sensitive cancers, or liver disease.
• Monitor device position: schedule follow‑up visits to check for displacement or expulsion.
• Counsel on infection signs: advise immediate medical attention for fever, unusual discharge, or severe pain.
• Store at room temperature: keep in original packaging, protect from moisture and direct sunlight.

Levonorgestrel's efficacy can be altered by other medicines that affect hormone metabolism or coagulation.

Major Interactions (Avoid)

• Rifampicin, carbamazepine, phenytoin: enzyme inducers that may reduce contraceptive effectiveness.
• Ketoconazole, itraconazole: strong antifungal agents that can increase levonorgestrel levels.
• St. John's wort: herbal inducer that may lower drug exposure.

Moderate Interactions (Monitor Closely)

• Combined oral contraceptives: additive hormonal effects may increase side‑effect risk.
• Warfarin or other anticoagulants: potential for increased bleeding.
• Certain antibiotics (e.g., metronidazole): uncertain impact; monitor for reduced efficacy.