Tibolone: a review

Area of Science:

• Reproductive Endocrinology
• Pharmacology
• Cardiovascular Health

Background:

• Hormonal replacement therapy (HRT) is used for menopausal symptoms.
• Tibolone is a synthetic steroid with tissue-specific effects.
• Understanding tibolone's efficacy and safety profile is crucial.

Purpose of the Study:

• To evaluate tibolone's efficacy compared to other HRT.
• To assess tibolone's effects on climacteric symptoms, bleeding patterns, mood, libido, lipids, and bone metabolism.
• To investigate tibolone's cardiovascular effects.

Main Methods:

• Comparative efficacy analysis of tibolone versus other HRT.
• Assessment of bleeding patterns in women with amenorrhea and perimenopausal women.
• Evaluation of androgenic effects on mood, libido, and lipid profiles (Lp(a), triglycerides, HDL cholesterol).
• Analysis of tibolone's impact on vascular reactivity and bone metabolism markers.

Main Results:

• Tibolone is as effective as other HRT for menopausal symptoms.
• Tibolone does not cause withdrawal bleeding in women with amenorrhea but may cause irregular bleeding in perimenopause.
• Androgenic action may benefit mood, libido, and certain lipids (Lp(a), triglycerides) but can reduce HDL cholesterol.
• Tibolone induces peripheral vasodilatation and affects vascular reactivity similarly to estrogen, without altering blood pressure or cardiac output.
• Tibolone impacts bone metabolism markers similarly to other HRT, but fracture data is pending.

Conclusions:

• Tibolone is an effective HRT option for postmenopausal women, offering benefits for symptoms, mood, and libido.
• Caution is advised in perimenopausal women due to potential irregular bleeding.
• Tibolone's cardiovascular effects, including vasodilatation, warrant further investigation regarding fracture prevention.