Levonorgestrel Biogaran (Levonorgestrel)

Levonorgestrel Biogaran is a progestin that acts on the hormonal regulation pathway to prevent pregnancy.

• Emergency contraception: prevents ovulation and fertilization when taken shortly after unprotected sexual intercourse.
• Regular contraception: provides ongoing suppression of ovulation for reliable birth control in women seeking long‑term prevention.
• Ovulation inhibition: maintains low progesterone activity to stop the release of an egg during the menstrual cycle.
• Menstrual cycle regulation: can be used under medical supervision to help manage cycle timing.

• Levonorgestrel binds with high affinity to progesterone receptors in the hypothalamus, pituitary gland and reproductive tissues. This binding suppresses the mid‑cycle luteinizing hormone surge, thereby inhibiting ovulation. It also induces changes in cervical mucus, making it thicker and less permeable to sperm, and alters endometrial development, reducing the likelihood of implantation should fertilization occur. The combined actions ensure effective prevention of pregnancy when administered according to clinical guidelines.

Levonorgestrel may cause a range of adverse reactions, varying from mild to severe.

Common Side Effects

• Nausea: mild to moderate stomach upset occurring shortly after dosing.
• Headache: transient tension‑type headaches.
• Breast tenderness: temporary discomfort or swelling of breast tissue.
• Menstrual changes: spotting, breakthrough bleeding, or altered flow.

Serious or Rare Side Effects

• Severe allergic reaction: rash, itching, swelling, or difficulty breathing.
• Thromboembolic events: deep vein thrombosis or pulmonary embolism.
• Ectopic pregnancy: implantation of an embryo outside the uterus.
• Persistent abdominal pain: may indicate serious complications.

Before prescribing Levonorgestrel Biogaran, clinicians should consider several precautionary measures.

• Assess contraindications: verify no history of thromboembolic disorders, hormone‑dependent tumors, liver disease, or unexplained vaginal bleeding.
• Review concomitant medications: avoid use with strong enzyme inducers that may lower efficacy.
• Timing of administration: ensure emergency dose is taken within the recommended window after intercourse.
• Counsel on missed doses: advise patients to follow prescriber instructions if a dose is omitted.
• Pregnancy testing: confirm the patient is not already pregnant before initiating therapy.
• Store at ambient temperature below 25°C: keep in the original packaging, protect from moisture and direct sunlight.

Levonorgestrel can interact with other medicines, affecting its effectiveness or safety.

Major Interactions (Avoid)

• Combined hormonal contraceptives: concurrent use may increase risk of thromboembolic events.
• Anticoagulants: may enhance bleeding tendency.
• Strong enzyme inducers (e.g., rifampicin, carbamazepine): can markedly reduce levonorgestrel plasma levels.

Moderate Interactions (Monitor Closely)

• Antifungal agents (e.g., ketoconazole): may increase levonorgestrel concentrations.
• Antiretroviral drugs (e.g., protease inhibitors): can alter hormone metabolism.
• Herbal supplements (e.g., St. John’s wort): may decrease contraceptive efficacy.