Kelzy (Dienogest, Ethinylestradiol | Lactose)

Kelcy is a combined hormonal contraceptive that acts on the hypothalamic‑pituitary‑ovarian axis to prevent pregnancy and manage menstrual patterns.

• Contraception: provides reliable prevention of pregnancy when taken as prescribed.
• Menstrual cycle regulation: helps achieve more predictable bleeding and reduces irregular spotting.
• Hormonal cycle management: assists in treating cycle‑related symptoms such as dysmenorrhea and heavy bleeding.

• Kelcy combines the progestogenic agent dienogest with the estrogen ethinylestradiol. Dienogest binds to progesterone receptors, suppressing the mid‑cycle surge of luteinising hormone (LH) and follicle‑stimulating hormone (FSH), thereby inhibiting ovulation. Ethinylestradiol provides estrogenic feedback that stabilises the endometrial lining and enhances the suppression of gonadotropins, while also altering cervical mucus to impede sperm penetration. The combined hormonal effect results in a consistent contraceptive efficacy across the menstrual cycle.

Kelcy may cause a range of adverse reactions, varying from mild to serious.

Common Side Effects

• Nausea: mild to moderate stomach upset.
• Headache: tension‑type or migraine‑like pain.
• Breast tenderness: swelling or discomfort of the breasts.
• Spotting or irregular bleeding: unscheduled light bleeding.
• Mood changes: irritability or mild depressive symptoms.
• Weight gain: modest increase in body weight.

Serious or Rare Side Effects

• Deep vein thrombosis: blood clot formation in deep veins.
• Pulmonary embolism: clot migration to lung vessels.
• Stroke: cerebrovascular accident due to clot or hemorrhage.
• Myocardial infarction: heart attack risk, especially in high‑risk women.
• Severe allergic reaction (anaphylaxis): rash, swelling, breathing difficulty.
• Liver disorders: jaundice, hepatitis, or hepatic dysfunction.

Before prescribing Kelcy, clinicians should assess individual risk factors and contraindications.

• Contraindicated in pregnancy: product must not be used by pregnant women (Category X).
• Avoid in smokers over 35: increased risk of cardiovascular events.
• Assess thromboembolic risk: do not use in women with a history of clotting disorders.
• Monitor blood pressure: may cause hypertension; regular checks recommended.
• Review liver function: hepatic impairment may affect hormone metabolism.
• Store at ambient temperature: keep below 25°C in the original pack, protect from moisture.

Kelcy can interact with several drug classes, affecting its efficacy or safety.

Major Interactions (Avoid)

• Antiepileptic enzyme inducers (e.g., carbamazepine, phenytoin): reduce contraceptive efficacy.
• Rifampicin: markedly decreases hormone levels, risking pregnancy.
• Antiretroviral protease inhibitors (e.g., ritonavir): may increase hormone concentrations leading to toxicity.
• St. John’s wort: induces metabolism, decreasing effectiveness.

Moderate Interactions (Monitor Closely)

• Antibiotics (e.g., tetracycline): may slightly reduce efficacy; monitor menstrual cycle.
• Antifungals (e.g., ketoconazole): may increase hormone levels; watch for side effects.
• Diuretics (e.g., spironolactone): may affect fluid balance; monitor blood pressure.