Kliogest Tablet: Composition and Clinical Use
Kliogest is a combined hormone replacement therapy (HRT) tablet containing 2mg estradiol (17β-estradiol) and 1mg norethisterone acetate, used primarily for the management of menopausal symptoms and prevention of osteoporosis in postmenopausal women with an intact uterus.
Composition and Classification
Kliogest is a continuous combined HRT preparation containing:
- 2mg of estradiol (17β-estradiol) - a natural estrogen
- 1mg of norethisterone acetate - a synthetic progestin derived from 19-nortestosterone
Primary Indications
- Relief of menopausal symptoms (vasomotor symptoms, vaginal atrophy)
- Prevention of postmenopausal bone loss and osteoporosis
- Protection against endometrial hyperplasia in women with an intact uterus 1, 2, 3
Clinical Benefits
- Increases bone mineral density (spine +6%, hip +2%) 3
- Improves lipid profile by lowering total cholesterol and LDL-C (both -16%) 3
- Relieves menopausal symptoms (though some studies show variable efficacy) 2, 3
- Prevents endometrial hyperplasia by counteracting the effects of estrogen on the uterine lining 1, 4
Risks and Adverse Effects
Continuous combined HRT with estrogen plus progestin increases risk of:
- Stroke (9 more per 10,000 woman-years)
- Deep venous thrombosis (12 more per 10,000 woman-years)
- Pulmonary embolism (9 more per 10,000 woman-years)
- Invasive breast cancer (8 more per 10,000 woman-years)
- Gallbladder disease (20 more per 10,000 woman-years)
- Dementia (22 more per 10,000 woman-years)
- Urinary incontinence (872 more per 10,000 woman-years) 1, 4
Appropriate Candidates
Kliogest is most appropriate for:
- Women under 60 years of age
- Women within 10 years of menopause onset
- Women without elevated risk for cardiovascular disease, stroke, or breast cancer 4
Contraindications
Absolute contraindications include:
- History of hormone-related cancers
- Active liver disease
- History of abnormal vaginal bleeding
- Previous venous thromboembolism or stroke
- Coronary heart disease 4
- Peanut allergy (if formulation contains peanut oil) 5
Administration
- Typically administered as a single daily tablet
- Should be taken at the same time each day
- For postmenopausal women with an intact uterus, the continuous combined regimen helps prevent withdrawal bleeding 4
Clinical Considerations
Risk-Benefit Assessment: Benefits typically outweigh risks in women under 60 years and within 10 years of menopause onset 4
Route of Administration: While Kliogest is an oral preparation, transdermal estradiol is generally preferred over oral formulations due to its improved safety profile regarding thrombotic risk 4
Monitoring: Patients should be evaluated after 3-6 months of treatment, with annual follow-up thereafter, including assessment of:
- Blood pressure
- Weight
- Lipid profile
- Symptom control
- Bleeding patterns 4
Duration of Use: Should be used at the lowest effective dose for the shortest duration needed to control symptoms 4
Common Pitfalls to Avoid
Prescribing for cardiovascular prevention: HRT should not be used for prevention of cardiovascular disease, heart attacks, or strokes 4, 5
Ignoring bleeding patterns: Irregular bleeding during the first months of treatment is common but should decrease over time; persistent bleeding requires investigation 3
Overlooking metabolic effects: While Kliogest improves some lipid parameters, it may decrease HDL-C (-18%) 3
Missing contraindications: Always screen thoroughly for contraindications before prescribing 4