Ladybon (Tibolone)

Tibolone is used in hormone replacement therapy to address estrogen deficiency and related menopausal conditions.

• Relief of menopausal symptoms: reduces hot flashes, night sweats, and mood disturbances.
• Prevention of postmenopausal osteoporosis: improves bone mineral density and reduces fracture risk.
• Treatment of estrogen deficiency: restores hormonal balance in postmenopausal women.

• Tibolone acts as a synthetic steroid with estrogenic, progestogenic and androgenic activity. After oral absorption it is metabolized to 3‑hydroxy‑tibolone, which binds estrogen receptors (ERα, ERβ) producing estrogenic effects, while other metabolites engage progesterone and androgen receptors, providing progestogenic and androgenic actions. This combined receptor activity modulates the hypothalamic‑pituitary‑gonadal axis, alleviating estrogen‑deficiency symptoms and influencing bone metabolism.

Tibolone may cause a range of adverse reactions, most of which are mild and reversible.

Common Side Effects

• Nausea: occasional upset stomach or feeling of queasiness.
• Headache: mild to moderate tension‑type headaches.
• Breast tenderness: mild discomfort or swelling of breast tissue.
• Weight gain: modest increase in body weight.
• Vaginal discharge: watery or mucous discharge.

Serious or Rare Side Effects

• Vaginal bleeding: unexpected uterine bleeding requiring medical evaluation.
• Liver dysfunction: elevated liver enzymes or hepatitis.
• Deep vein thrombosis: formation of blood clots in deep veins, potentially life‑threatening.
• Stroke: rare cerebrovascular events.
• Breast cancer: potential increased risk with long‑term use.

Before prescribing tibolone, clinicians should consider several safety aspects.

• Assess cardiovascular risk: evaluate history of thromboembolic disease before initiating.
• Monitor liver function: perform baseline and periodic liver enzyme tests.
• Screen for hormone‑dependent cancers: avoid in women with active breast or endometrial cancer.
• Consider bone health: use with calcium/vitamin D supplementation as appropriate.
• Avoid use during pregnancy: contraindicated in pregnant women.
• Store at ambient temperature: keep below 25 °C, protect from moisture and light in original container.

Tibolone can interact with other medicines, requiring careful management.

Major Interactions (Avoid)

• Combined oral contraceptives: increased risk of thromboembolism.
• Anticoagulants (e.g., warfarin): may reduce anticoagulant efficacy.
• CYP3A4 inducers (e.g., rifampicin): may lower tibolone plasma levels.

Moderate Interactions (Monitor Closely)

• Antidepressants (SSRIs): may diminish hot‑flash relief.
• Tamoxifen: antagonistic estrogenic effect may reduce tamoxifen efficacy.
• Antidiabetic agents: possible alteration of glucose control requiring monitoring.