Levodonna (Levonorgestrel)

Levonorgestrel is a progestin used in the hormonal pathway of emergency contraception.

• Emergency contraception: prevents pregnancy when taken shortly after unprotected intercourse.
• Unintended pregnancy prevention: provides a rapid post‑coital method to reduce the risk of conception.
• Post‑coital contraception: offers a single‑dose option for women seeking immediate contraceptive protection.

• Levonorgestrel binds to progesterone receptors in the hypothalamic‑pituitary‑ovarian axis, suppressing the luteinizing hormone surge and thereby inhibiting or delaying ovulation. It may also impair tubal motility and alter the endometrial lining, reducing the likelihood of fertilization and implantation if ovulation has already occurred.

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

Common Side Effects

• Nausea: mild to moderate stomach upset.
• Abdominal pain or cramps: discomfort in the lower abdomen.
• Headache: transient tension‑type headache.
• Dizziness or light‑headedness.
• Fatigue or tiredness.
• Menstrual changes: spotting or altered timing of the next period.

Serious or Rare Side Effects

• Allergic reaction: rash, itching, swelling, or anaphylaxis.
• Severe abdominal pain: may indicate ectopic pregnancy.
• Chest pain or palpitations.
• Persistent vomiting or inability to keep fluids down.
• Thromboembolic events: rare clotting disorders.
• Liver dysfunction: jaundice or abnormal liver enzymes.

Before using Levodonna, consider the following safety measures.

• Timing of administration: take as soon as possible after unprotected intercourse for maximum efficacy.
• Contraindications: avoid if you have a known hypersensitivity to levonorgestrel or any tablet excipients.
• Pregnancy status: do not use if you are already pregnant; the product will not terminate an established pregnancy.
• Drug interactions: be aware of enzyme‑inducing medications that may reduce effectiveness.
• Medical conditions: use with caution in women with severe liver disease or uncontrolled hypertension.
• Store at ambient temperature: keep in the original packaging, protect from moisture and excessive heat.

Levodonna can interact with other medicines, affecting its efficacy or safety.

Major Interactions (Avoid)

• Rifampin, carbamazepine, phenytoin, St. John’s wort: strong enzyme inducers that may markedly reduce levonorgestrel effectiveness.
• Antiretroviral protease inhibitors: may alter hormone levels and affect contraceptive reliability.

Moderate Interactions (Monitor Closely)

• Azole antifungals (e.g., ketoconazole): may increase levonorgestrel plasma concentrations.
• Hormonal contraceptives used concurrently: may have additive progestogenic effects.
• Anticoagulants (e.g., warfarin): monitor for altered bleeding risk.