Justine

Levonorgestrel, the active ingredient in Justine, is a progestogen presented as an oral tablet for oral use. It is employed to prevent pregnancy after unprotected sexual intercourse. GNH USA supplies Justine as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Levonorgestrel is a progestogen used in the emergency contraception pathway to prevent unintended pregnancy. - Emergency contraception: provides post‑coital contraceptive effect to reduce the chance of pregnancy when taken promptly after unprotected intercourse. - Prevention of pregnancy: offers a short‑term hormonal method to avert implantation when used within the recommended time frame. - Unintended pregnancy risk reduction: lowers the probability of conception in situations of contraceptive failure or missed doses.

Levonorgestrel 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: cramping or discomfort in the lower abdomen. - Fatigue: feeling unusually tired or weak. - Headache: mild to moderate head pain. - Dizziness: sensation of light‑headedness. - Menstrual changes: spotting, early or delayed periods.

Serious or Rare Side Effects: - Severe allergic reaction: rash, swelling, or difficulty breathing. - Chest pain: unexplained discomfort in the chest area. - Severe abdominal pain: intense or persistent pain that may indicate ectopic pregnancy. - Vomiting blood or severe gastrointestinal bleeding. - Signs of ectopic pregnancy: sharp pelvic pain with vaginal bleeding. - Thromboembolic events: rare clotting disorders.

Levonorgestrel should be used with awareness of specific safety considerations. - Timing of administration: take as soon as possible after unprotected intercourse for maximum effectiveness. - Contraindications: avoid if known hypersensitivity to levonorgestrel or any tablet excipients. - Medical conditions: caution in patients with active liver disease or uncontrolled hypertension. - Drug interactions: review concomitant medications that may reduce efficacy, such as enzyme‑inducing agents. - Pregnancy testing: not indicated for established pregnancy, but ensure the patient is not already pregnant before use. - Store at ambient temperature: keep in the original packaging, protect from moisture and excessive heat.

Levonorgestrel may interact with other medicines, altering its effectiveness or safety profile.

Major Interactions (Avoid): - Rifampicin: enzyme induction can markedly reduce levonorgestrel effectiveness. - Antiepileptic enzyme inducers (e.g., carbamazepine, phenytoin): may lower plasma levels and compromise contraceptive protection. - St. John’s Wort: herbal inducer that can diminish drug efficacy.

Moderate Interactions (Monitor Closely): - Antifungal azoles (e.g., ketoconazole): may increase levonorgestrel concentrations. - Protease inhibitor antiretrovirals: can affect metabolism and require monitoring. - Hormonal contraceptives: concurrent use may lead to additive hormonal effects; assess risk‑benefit.