Lemena (Desogestrel)

• Desogestrel is used as a progestin‑only oral contraceptive to prevent pregnancy and manage menstrual disorders.
• Contraception: prevents unintended pregnancy by suppressing ovulation in women of childbearing age.
• Hormonal birth control: provides a single‑dose daily regimen for reliable contraception.
• Regulation of menstrual cycles: helps achieve more predictable bleeding patterns in women with irregular cycles.

• Desogestrel acts as a selective agonist of the progesterone receptor. By binding to these receptors in the hypothalamus and pituitary, it suppresses the luteinizing hormone surge, thereby inhibiting ovulation. In the endometrium, it induces a secretory transformation that is unsuitable for implantation, and it thickens cervical mucus, further reducing sperm penetration. Additionally, the progestogenic effect stabilizes the endometrial lining, contributing to reduced menstrual bleeding.

Desogestrel may be associated with a range of adverse reactions, varying from mild to serious.

Common Side Effects

• Nausea: mild gastrointestinal upset.
• Headache: tension‑type or migraine‑like pain.
• Breast tenderness: discomfort or swelling of the breasts.
• Irregular bleeding: spotting or changes in menstrual flow.

Serious or Rare Side Effects

• Deep vein thrombosis: blood clot formation in deep veins.
• Pulmonary embolism: blockage of pulmonary arteries.
• Severe allergic reaction: rash, swelling, or anaphylaxis.
• Liver dysfunction: jaundice, elevated enzymes, or hepatic failure.

• Before prescribing Desogestrel, clinicians should evaluate several safety considerations.
• Assess thrombotic risk: avoid use in patients with a history of deep vein thrombosis or pulmonary embolism.
• Screen for liver disease: contraindicated in severe hepatic impairment.
• Monitor blood pressure: may cause an increase, especially in hypertensive individuals.
• Advise smoking cessation: smoking significantly raises cardiovascular risk, particularly in women over 35.
• Store at room temperature: keep tablets in the original container, protect from moisture and heat.

Desogestrel can interact with other medicines, altering its effectiveness or safety.

Major Interactions (Avoid)

• Enzyme‑inducing antiepileptics (e.g., carbamazepine, phenytoin): markedly reduce plasma concentrations.
• Rifampicin: strong inducer that decreases contraceptive efficacy.
• Protease inhibitor antiretrovirals (e.g., ritonavir): may interfere with metabolism leading to reduced effectiveness.

Moderate Interactions (Monitor Closely)

• Azole antifungals (e.g., ketoconazole): can increase desogestrel levels and risk of side effects.
• St. John’s wort: herbal inducer that may lower contraceptive reliability.
• Certain antibiotics (e.g., tetracycline): may modestly affect hormone levels.