Ladybon

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Ladybon

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Medically reviewed

Laura Arias

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Ladybon

Quick Facts

Property Description
Active ingredient Tibolone
Form Oral Tablet
Pharmacological class Selective Tissue Estrogenic Activity Regulator (STEAR)
Common use Hormone Replacement Therapy (HRT) for Postmenopause
Origin Synthetic Steroid

Ladybon is a prescription-only synthetic steroidal hormonal agent used for systemic treatment in postmenopausal women, and it is classified as a specific type of Hormone Replacement Therapy (HRT) Agent. It is distinguished by its unique pharmacological classification as a Selective Tissue Estrogenic Activity Regulator (STEAR), reflecting its targeted and multifaceted action within the body, which allows for a differential impact on target tissues.


Ladybon: Identity and Pharmacological Classification

Ladybon is a medication whose sole active ingredient is Tibolone, a substance synthesized from a Delta^5-steroid precursor, making it a synthetic steroid. Tibolone is classified as a STEAR due to its ability to activate hormone receptors in a manner that is selective across various tissues. This selective tissue action indicates that the drug is designed to act on specific sites to manage estrogen deficiency symptoms. This classification differentiates it from traditional HRT agents that often rely on combinations of standard estrogen and progestin compounds. The drug’s identity as a synthetic, single-component agent defines its specialized role in managing the physiological changes that follow menopause.


Composition, Form, and General Purpose

Ladybon is presented as a fixed-dose, monophasic oral tablet, which is the standardized dosage form for this systemic medication. The active ingredient, Tibolone, functions as a pro-drug: once absorbed following oral administration, it is metabolized into three distinct substances that simultaneously exhibit estrogenic activity, progestogenic activity, and androgenic activity. This triple hormonal activity profile provides a broad spectrum of support for women experiencing symptoms of hormone decline. The general purpose of this therapy is to provide multifaceted hormonal support to address the diverse and significant symptoms arising from estrogen deficiency in postmenopausal women, aiding in the maintenance of crucial bone density.

Regulatory References

  1. Tibolone Union Register

What side effects are possible with Ladybon?

The official safety profile for Ladybon (Tibolone) is documented by regulatory authorities, classifying potential effects by frequency and the body systems they affect.

Adverse Reaction Scope

Category Officially Documented Observations
Common Side Effects Vaginal bleeding/spotting, Abdominal pain, Breast tenderness/pain, Weight gain, Depression, Headache, Dizziness, Nausea, Hirsutism (unusual hair growth).
System-Organ Classes Effects noted in the Nervous System, Gastrointestinal Tract, Reproductive System, Skin, Vascular System, and Metabolism/Nutrition.

Serious Adverse Reactions and Safety Constraints

The regulatory label highlights an increased risk of serious adverse reactions, which is often tied to the duration of use:

  • Vascular Events: Documented risk of Stroke and Venous Thromboembolism (VTE), with the risk of stroke increasing particularly in women over the age of 60.
  • Cancers: Increased risk of Endometrial Cancer (especially in women with an intact uterus) and Breast Cancer has been reported, with this risk increasing with longer treatment duration.

Time-Related Patterns and Population Notes:

Breakthrough bleeding and spotting are categorized as common, often occurring during the first months of treatment. The risk of serious vascular events is generally considered highest during the first year of use. The medicine is contraindicated in women with active liver disease, a history of certain cancers (e.g., hormone-dependent tumors), or a history of specific thromboembolic disorders.

Connection to the overall safety profile:

The regulatory safety information structures the understanding of Ladybon's risks by defining clear common and uncommon adverse reactions, while stressing the duration-dependent risk of serious conditions like stroke, VTE, and specific cancers. This framework establishes mandatory restrictions (contraindications) and highlights specific safety concerns for women with an intact uterus or those over the age of 65.

Overdose and Emergency Response

The official regulatory documentation for Ladybon (Tibolone) provides a defined profile for cases of acute overdose. The documented clinical manifestations are typically mild and self-limiting, being confined to expected side effects of the agent, and no specific severe or life-threatening outcomes have been formally documented as a direct result of acute overdose.


Documented Overdose Manifestations and Clinical Management

According to the Summary of Product Characteristics (SmPC) and corresponding national health authority guidance, an overdose of this agent may present with clinical signs involving the gastrointestinal and reproductive systems. The officially listed symptoms include nausea, vomiting, and withdrawal bleeding in females. The regulatory text explicitly dictates that the management of this agent's overdose is limited to symptomatic and supportive treatment. Furthermore, it is officially stated that no specific antidote is known for Tibolone. Regulatory documents do not define specific toxic dose levels, nor do they detail population-specific overdose considerations.


When to Seek Immediate Medical Help

The requirement for seeking medical attention is explicitly defined by regulatory authorities. If an overdose is suspected, users must seek immediate medical advice from a doctor, pharmacist, or emergency services. This action is required to ensure professional evaluation and the administration of the officially prescribed supportive care, regardless of whether the user experiences the documented mild manifestations.

Therapeutic Uses of Ladybon

What Ladybon Treats: Main Uses and Benefits

Ladybon (Tibolone) is a type of hormone replacement therapy (HRT) commonly used to help with symptoms related to systemic discomfort following menopause. It is indicated for the management of key menopausal symptoms and plays a role in managing osteoporosis.


The medication is generally applied in contexts where patients experience symptoms that create noticeable physiological strain. This includes the management of vasomotor symptoms like hot flushes and night sweats, and is relevant for easing symptoms related to vulvovaginal atrophy, such as dryness and painful intercourse (dyspareunia). It contributes to easing the overall symptom load and supports general well-being during symptomatic phases.

It is also applied in contexts where additional symptomatic support is needed for the management of osteoporosis in postmenopausal women who are at high risk, assisting with maintaining functional stability.

Quick Fact: Support for Key Menopausal Symptoms

Therapeutic Focus Primary Symptoms Addressed
Symptom Management Hot flushes, night sweats, vaginal dryness, dyspareunia.
Long-term Support Management of bone mineral density loss and fracture risk scenarios.

Eligibility and Restrictions for Use

Ladybon (Tibolone) is officially restricted for use only in postmenopausal women who are more than one year past their final natural menstrual period. The medicine is not for use in pre-menopausal, pediatric, or adolescent populations.

Use is strictly contraindicated for several populations as documented in regulatory labeling. This includes women with a history of venous or arterial thromboembolic disease (such as a stroke or deep vein thrombosis) and those with known, past, or suspected oestrogen-dependent malignant tumours, including breast cancer or untreated endometrial hyperplasia. The medicine is also contraindicated during pregnancy and lactation.

Regulatory documentation requires close clinical supervision for patients with comorbidities like hypertension, diabetes mellitus, or endometriosis. Treatment must be immediately discontinued if acute liver disease or liver function deterioration occurs. The label also requires special consideration for use in women over 60 due to the documented higher incidence of stroke.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official interaction profile for Ladybon (Tibolone) is defined by regulatory documentation concerning pharmacokinetic and pharmacodynamic constraints. These constraints primarily involve agents that modify the drug’s metabolism and substances that affect blood coagulation.

Interaction Scope and Constraints

Classification Documented Interaction Pattern
Exposure Reduction Co-administration with potent enzyme inducers, such as the anti-tuberculosis agent Rifampicin and the anticonvulsants Phenytoin and Carbamazepine, results in a formal reduction in the plasma concentration of Tibolone's active metabolites.
Herbal/Supplement The herbal product St John's Wort (Hypericum perforatum) is documented to reduce the systemic exposure of Tibolone active metabolites due to enzyme and/or transporter induction.
Pharmacodynamic Effect Ladybon enhances the effect of coumarin derivatives (anticoagulants, such as Warfarin), causing an increase in anticoagulant activity.
Population Constraint Patients receiving concomitant anticoagulant therapy require mandatory monitoring of their coagulation status (International Normalized Ratio, INR) upon initiating or discontinuing Ladybon.

The product's structure also notes that Tibolone may inhibit the metabolism of certain other medicines that are CYP3A4 substrates, which is a documented pharmacokinetic effect. No mandatory timing-based separation rules for administration are formally listed in official documentation.

Mechanism of Action

Dual Control: Receptor Agonism and Local Enzyme Modulation

Ladybon (Tibolone) is a Selective Tissue Estrogenic Activity Regulator (STEAR) whose mechanism is governed by coordinated effects from its three active metabolites, leading to differentiated action across the body.

The drug's primary action relies on its metabolites acting as agonists on the Estrogen Receptor (ER), Progesterone Receptor (PR), and Androgen Receptor (AR), while simultaneously influencing hormone levels within the cell. In tissues like the endometrium and breast, the drug inhibits key estrogen-activating enzymes (like Estrogen Sulfatase), thereby limiting the local concentration of active estrogen. This dual-control cascade results in a net high estrogenic signal in tissues like bone and CNS and a net low estrogenic signal in tissues like the endometrium and breast, defining the drug's selective physiological profile.

Modulation of Skeletal and Central Pathways

The sustained agonism at the Estrogen Receptor in the skeletal system activates pathways that suppress osteoclast activity, thereby modulating the balance of skeletal turnover and influencing Bone Mineral Density (BMD) regulatory pathways. Concurrently, the estrogenic metabolites engage receptors within the central nervous system (CNS), specifically in the hypothalamus, which acts to stabilize neural activity associated with thermoregulation. The anti-estrogenic enzyme modulation and Progesterone Receptor agonism limit the proliferative signaling in the endometrium. This differential regulation across key organ systems establishes its unique physiological action.

Dosage and Administration Information

Administration Guidelines for Ladybon (Tibolone)

The administration of Ladybon follows a continuous, once-daily regimen. The drug is supplied as a 2.5 mg fixed-dose oral tablet and must be administered exclusively by the oral route.

Dosage and Schedule

The standard dosage for this therapy is one tablet per day. This constitutes a continuous regimen, meaning the tablet is taken daily without interruption, and a separate progestogen is not co-administered. For consistency, the tablet should be taken, preferably, at the same time every day, and may be consumed with or without food.

Initiation and Course Principle

Treatment should only commence once the patient has reached a definitive post-menopausal state. For women experiencing natural menopause, this means the initiation of therapy must occur at least 12 months after the last natural menstrual bleed. If the menopause was induced surgically, treatment may commence immediately. The overall principle guiding the duration of use is to utilize the lowest effective dose for the shortest duration. No specific dose adjustment is considered necessary for the elderly population.

Administration Logistics

The tablet should be swallowed whole with water or another drink and should not be crushed or chewed. In the event that a dose is missed, it should be taken as soon as remembered, unless it is more than 12 hours overdue. If the dose is more than 12 hours late, the standard procedure is to skip the missed tablet entirely and resume the regimen with the next scheduled dose.

Recent Clinical Evidence

Research evidence / Overview of studies for Ladybon


Research Evidence for Symptom Relief

This section summarizes the research exploring how symptoms change over time when Ladybon has been studied in postmenopausal women. The evidence base primarily involves numerous short- and intermediate-term randomized controlled trials (RCTs). These studies were applied in research contexts involving fluctuating or unstable symptoms, such as the hot flushes and night sweats that occur after menopause. Research explored outcomes related to vulvovaginal atrophy, including measures of reported dryness and dyspareunia.

In these studies, research examined how symptoms evolved in the observed populations. Studies report how symptoms evolved in the observed populations by tracking changes in the frequency and perceived severity of hot flushes and night sweats using patient-reported outcomes describing perceived discomfort. Findings describe patterns observed in the studies where measurements for symptom frequency and severity were recorded. Follow-up durations were limited, often covering only the first three to six months, meaning long-term effects are not fully established for maintaining symptom patterns over many years.


Research Evidence for Bone Health Support

The evidence for bone health involves both intermediate-term trials and one major, long-term study. Ladybon's use was explored in research focusing on Bone Mineral Density (BMD) measurements and fracture risk scenarios in certain postmenopausal populations.

Research highlights changes measured during the study period by focusing on outcomes related to systemic or functional imbalance. Studies monitored BMD measurements at key sites like the hip and spine, reporting observations in the study populations relative to the comparator group. Furthermore, in one large long-term study involving a specific group of older women who already had low BMD (osteoporosis), findings describe patterns observed in the studies related to the occurrence of fractures.

Results apply only to the populations studied, meaning the data on fracture incidence mainly comes from a single, large study involving women ages 60 to 85 who were already at high risk. Data for certain groups remain insufficient, particularly for younger postmenopausal women who may be seeking to maintain bone health but do not yet have established low BMD.

Key Studies & References

  1. Tibolone for postmenopausal women: systematic review of randomized trials
  2. Drug Safety Update - Tibolone (Livial): increased risk of breast cancer recurrence in women with a history of breast cancer

Frequently Asked Questions (FAQ)

Common questions about Ladybon (FAQ)

Q: What menopausal symptoms is Ladybon typically prescribed for?

A: According to official regulatory documents, Ladybon is primarily indicated for relieving the symptoms caused by oestrogen deficiency in women who have completed menopause. This includes symptoms such as hot flushes and night sweats.

Q: Does Ladybon also have an effect on mood and sexual function (libido)?

A: While not an official indication, information from clinical studies and patient reports often mentions effects on mood and sexual function (libido). These effects have been reported by patients and noted in clinical settings during the course of treatment.

Q: How quickly should I expect to see an improvement in my menopausal symptoms after starting Ladybon?

A: Clinical experience suggests that it may take up to three months before the full therapeutic effect of Ladybon is noticed. Improvement in symptoms is usually assessed after about 12 weeks of treatment.

Q: How does Ladybon specifically work to relieve hot flashes?

A: The medicine works by means of its estrogenic metabolites, which interact with receptors in the central nervous system (CNS), specifically in the part of the brain called the hypothalamus. This interaction helps to stabilise the body’s internal process for controlling temperature, which is called thermoregulation.

Q: What are the main benefits of taking Ladybon for bone health?

A: Ladybon is officially indicated for the prevention of osteoporosis (bone thinning) in women who are postmenopausal and considered to be at high risk of bone fractures. Regulatory documents note that this indication is generally considered for women who are not suitable for other forms of osteoporosis prevention.

Q: Is Ladybon intended for use before the onset of menopause?

A: No. Official product information states that Ladybon is exclusively for use in postmenopausal women. Treatment should only be initiated once a woman is more than one year after her last natural menstrual period, as stipulated by official guidelines.

Q: Why is Ladybon described as having 'tissue-selective' activity?

A: Ladybon is classified as a STEAR (Selective Tissue Estrogenic Activity Regulator) because the active substances (metabolites) it produces act selectively on different tissues. This means the active components are designed to have an estrogen-like activity in certain tissues, such as bone, while exhibiting different or limited hormonal activity in other tissues, such as the breast and uterus.

Q: How is Ladybon different from traditional estrogen-progestogen HRT?

A: Traditional Hormone Replacement Therapy (HRT) typically involves two separate hormones, an estrogen and a progestogen. Ladybon is different because it is a single agent, and the regulatory documents specify that a separate progestogen is not required and should not be added to the Ladybon regimen.

Q: Are there any specific foods or drinks, like alcohol, that interact with Ladybon?

A: Official patient information sheets generally state that you can eat and drink normally while taking Ladybon. There are no specific restrictions on foods or drinks like alcohol formally listed in the regulatory documents regarding intake timing.

Q: Does Ladybon provide a protective effect on the uterus, or is a separate progestogen needed?

A: The formulation is designed to exert an effect on the uterus. Regulatory guidance specifies that a separate progestogen is not required and should not be added to the Ladybon regimen.

Q: Can Ladybon affect my blood pressure?

A: Regulatory information indicates that the medicine must be used with close clinical monitoring for patients who have existing hypertension (high blood pressure). Additionally, a large or significant rise in blood pressure is considered one of the reasons to stop taking the medication.

Q: Is it possible to experience skin changes, like melasma or acne, while on Ladybon?

A: Acne and unusual hair growth (hirsutism) are listed as common side effects in product information. Other skin changes, such as chloasma (a type of skin discolouration also known as melasma) and rash, have been reported as rare side effects with other hormone therapies.

Q: Does Ladybon have any effect on blood sugar levels for someone with diabetes?

A: Yes, official regulatory documents state that Ladybon should be used with close clinical supervision for patients who have diabetes mellitus. This monitoring is required to manage any potential effect on blood sugar.

Q: Does Ladybon affect cholesterol and triglyceride levels?

A: Official documentation notes that Ladybon can influence lipid metabolism. This means it has the potential to affect levels of HDL (good) cholesterol, LDL (bad) cholesterol, and triglycerides.

Q: What is the average length of time women stay on Ladybon treatment?

A: The overarching regulatory principle guiding treatment duration is the use of the lowest effective dose for the shortest possible time. Based on common clinical practice, it is common for women to take the medicine for a period of two to five years to treat their menopausal symptoms.

Q: How long does Ladybon stay in the body after the last dose?

A: The active substance in Ladybon (Tibolone) has an elimination half-life of approximately 45 hours. This figure is used to help determine how quickly the drug is cleared from the body.

Q: Does Ladybon improve the symptoms of vaginal dryness and atrophy?

A: Official clinical and product summaries indicate that Ladybon has demonstrated activity in addressing symptoms of urogenital atrophy, which includes issues like vaginal dryness.

Q: Is it necessary to use a non-hormonal contraception method while taking Ladybon?

A: Ladybon is not a birth control method and does not provide contraception. If a woman is under 50 years old or has been postmenopausal for less than 12 months, the possibility of requiring additional non-hormonal contraception should be considered.

Q: Will I experience a recurrence of symptoms if I stop taking Ladybon suddenly?

A: Upon discontinuing the medication, it is possible for menopausal symptoms to return. When stopping, gradually reducing the dose is sometimes suggested to help manage the potential recurrence of menopausal symptoms.

Q: Does Ladybon contain estrogen, progesterone, or testosterone?

A: The active substance is Tibolone, which is a prodrug that gets converted into active metabolites within the body. These metabolites are unique because they simultaneously exert estrogenic, progestogenic, and androgenic (testosterone-like) activities on various tissues.

Q: Will I have a period or withdrawal bleed while taking Ladybon?

A: Ladybon is intended to be a continuous, no-bleed regimen used after menopause. However, vaginal bleeding or spotting is classified as a common side effect in the product information, particularly during the initial months of treatment.

Q: What are the signs that Ladybon is working as intended?

A: Effectiveness is generally evaluated by the relief of oestrogen deficiency symptoms. This includes a reduction in the severity and frequency of symptoms such as hot flushes and night sweats.

Q: Can taking Ladybon contribute to the development of migraines or headaches?

A: Yes, headache is listed as a common side effect in regulatory documents. Additionally, if you develop new migraine-like headaches that you have not experienced before, this is listed as a reason to stop taking the medication.

Q: Can Ladybon affect the results of any common blood tests or lab work?

A: The medicine may affect the results of certain laboratory tests. For example, if the medicine is taken with blood thinners, mandatory monitoring of coagulation status (INR) is required.

Q: What other hormone medications or supplements might interact with Ladybon?

A: Besides specific enzyme-inducing agents like Rifampicin and St. John’s Wort, Ladybon may interact with certain other medicines that are CYP3A4 substrates. This refers to drugs that are broken down by a common liver enzyme.

Q: Are there any studies comparing the long-term safety of Ladybon versus other HRT drugs?

A: The official safety and warning sections in regulatory documents often include comparative data. This information is used to state how the risk of certain conditions, such as breast cancer and ovarian cancer, compares to the risks associated with other types of hormone replacement therapy.

Q: How does Ladybon affect the breast tissue compared to other HRT options?

A: Official warnings state that the medicine carries a risk of breast cancer which increases with the duration of use. Some regulatory documents suggest that the risk associated with Ladybon may be comparable to that of oestrogen-only hormone replacement therapy.

Q: Can Ladybon be used to prevent osteoporosis in postmenopausal women?

A: Yes, Ladybon is officially indicated for the prevention of osteoporosis (bone thinning) in postmenopausal women. This indication applies to those who are at high risk of bone fractures.

Q: Is Ladybon used for anything other than menopausal symptoms (e.g., endometriosis, menstrual disorders)?

A: The primary official uses are for symptoms of oestrogen deficiency and osteoporosis prevention. However, regulatory documents include information for women who are being treated for conditions like endometriosis with certain analogues, detailing how to commence treatment in those circumstances.

Q: Why might a doctor switch me from traditional HRT to Ladybon?

A: The regulatory documents provide instructions on the process of switching from other HRT preparations (such as sequential or continuous combined HRT). However, they do not state the specific clinical rationale a doctor would use to make this decision.

Q: How do the metabolites of Ladybon create its selective effects in different body tissues?

A: The selective effects are created because the metabolites bind to and act as agonists (activators) for three key hormone receptors: the Estrogen Receptor (ER), the Progesterone Receptor (PR), and the Androgen Receptor (AR).

Q: What specific risk factors increase the chance of side effects with Ladybon?

A: Regulatory documents list several risk factors that require special clinical consideration, including a history of hypertension, diabetes mellitus, or endometriosis. The risk of stroke, a serious side effect, is also noted to increase particularly in women over the age of 60.

Q: Are there any serious risks associated with taking Ladybon, like blood clots or cancer?

A: Yes. Official warnings highlight a documented increased risk of serious adverse reactions, which include vascular events like Stroke and Venous Thromboembolism (VTE). The risk of certain cancers, specifically Endometrial Cancer and Breast Cancer, is also noted to increase with the duration of use.

How should Ladybon be stored and disposed of?

Storage and Disposal Requirements

Official regulatory guidelines strictly define the handling and storage conditions for Ladybon (Tibolone) tablets to maintain product stability and safety. The medication must be stored below 30 C (or 25 C in some regions) and should not be refrigerated or frozen. To ensure the tablets are protected from light and moisture, they must be kept in the original container and outer carton until the time of use.

For safety, Ladybon must be stored out of the sight and reach of children.

Disposal must adhere to local regulatory requirements. Unused or expired tablets must not be disposed of via wastewater or household waste, but should be taken to a suitable drug take-back facility or disposal scheme, as specified by national medicines authorities.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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