Tibone

Quick links to important sections

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Tibone

Property Description
Active ingredient Tibolone
Form Oral Tablet
Pharmacological class Synthetic Steroid Hormone Drug
Primary purpose Relief of postmenopausal symptoms
Origin Synthetic organic compound

What is the Medicine Tibone?

Tibone is a prescription-only pharmaceutical product whose single active ingredient is the substance Tibolone (INN). Tibolone is a complex synthetic steroid hormone derivative, chemically distinct from naturally occurring hormones. This medication is delivered exclusively as an orally administered tablet and combines the active ingredient with standard solid pharmaceutical excipients as the vehicle. Its status as a single-agent oral tablet is a defining feature, distinguishing it from multi-pill or transdermal combination therapies often employed for similar conditions.

What Type of Hormone Therapy is Tibolone?

Tibolone is broadly categorized as a Synthetic Steroid Hormone Drug used within the therapeutic framework of Hormone Replacement Therapy (HRT) for postmenopausal women. However, its precise functional classification is a Selective Tissue Estrogenic Activity Regulator (STEAR), a specialized classification for its differential impact across various body tissues. As such, it is used as a type of HRT for estrogen deficiency symptoms in postmenopausal women. This means the drug helps regulate the hormonal balance necessary for comfort and health after menopause.

What is the General Purpose of Taking Tibone?

The general purpose of taking Tibone is the management and relief of the typical disturbances known as climacteric symptoms resulting from hormone deficiency in the target audience of postmenopausal women. The drug is used to treat vasomotor symptoms (hot flushes) and provides beneficial effects on bone mineral density. The combination of hormonal activities provided by the drug's metabolites addresses the complex physical and emotional symptoms, and also serves the fundamental purpose of conserving bone density, a widely accepted medical use for this compound.

What side effects are possible with Tibone?

Possible Side Effects and Safety Information for Tibone (Tibolone)

The use of Tibone is associated with a risk of serious adverse reactions, which is a critical consideration for prescribers and patients.

Serious and Clinically Significant Adverse Reactions

Regulatory documents emphasize an increased risk of the following serious conditions:

  • Stroke (cerebrovascular events), particularly ischaemic stroke. This risk is considered to increase from the first year of treatment and may be higher in women over 60 years of age.
  • Certain Cancers: An increased risk of breast cancer and endometrial cancer (in women with an intact uterus) has been documented. There is also a potential increased risk of ovarian cancer.
  • Thromboembolism: Increased risk of Venous Thromboembolism (VTE), including deep vein thrombosis (DVT) and pulmonary embolism (PE), as well as Myocardial Infarction.

Common Adverse Reactions

Commonly reported effects can involve the reproductive and gastrointestinal systems, though many may resolve after the first few months of treatment. These include vaginal bleeding/spotting, breast tenderness or pain, lower abdominal pain, weight gain, and unusual hair growth.

Contraindications and Restrictions

Tibone is contraindicated in patients with a known or past history of the serious risks listed above, including known or suspected estrogen- or progestin-dependent cancers, active or recent arterial or venous thromboembolic disease, undiagnosed abnormal genital bleeding, and active liver dysfunction.

Treatment is for the shortest duration consistent with treatment goals. It is contraindicated in pregnancy and lactation. Women with an intact uterus should only be prescribed this medication, and patients over 65 have limited experience.

Overdose and Emergency Response

Overdose and When to Seek Help: Official Regulatory Information for Tibone

This section outlines the overdose profile and mandated emergency actions for Tibolone, derived exclusively from authoritative government regulatory sources.


Overdose Scope

Classification Official Regulatory Statement
Documented Overdose Manifestations Symptoms following an acute overdose after taking a dose greater than prescribed are typically limited and generally unlikely to cause serious harm. Recognized manifestations may include nausea and vaginal bleeding (a clinical sign).
Severe Outcome Triggers The sudden presence of signs potentially indicative of Venous Thromboembolism (VTE), such as sudden chest pain, painful swelling of the legs, or difficulty in breathing, requires immediate intervention.
Emergency-Response Statements Consult a doctor or pharmacist for advice is required after ingesting an excess dose. Seek immediate medical attention when severe or life-threatening symptoms are present.
Antidote and Management No specific antidote is known for Tibolone overdose. Treatment management is restricted to symptomatic and supportive treatment.

Connection to the Overall Overdose Profile

Regulatory documents define the overdose profile by stating that acute ingestion of an excess dose is generally unlikely to cause serious harm, yet they simultaneously mandate emergency help-seeking for both non-serious excess doses (consultation) and for severe, life-threatening symptoms (immediate attention). This structure confirms that management is limited to symptomatic and supportive treatment, as the official label also notes the absence of a specific antidote.

Therapeutic Uses of Tibone

What Tibone Treats: Main Uses and Benefits

The primary purpose of this medication is to provide supportive symptomatic relief for symptoms that create noticeable physiological strain in postmenopausal women. The medication is intended to help manage the overall symptom load across several key domains.

This medication is used across conditions presenting with acute episodes, such as hot flashes and recurrent night sweats, when symptoms intensify. It is considered relevant in managing long-term skeletal health and plays a role in managing osteoporosis risk. It is also applied in addressing symptoms related to heightened physiological activity, including low mood, insomnia, and sexual well-being (libido).

The medicine is considered relevant for managing symptom clusters that may become intense and interfere with daily comfort. This use provides support that contributes to easing the overall symptom load. One patient-oriented perspective on this type of support is: “The support provided may assist with maintaining a sense of stability when symptoms are more noticeable.”

Quick Fact: Relief for Symptoms that Interfere with Daily Functioning

Tibone is indicated for three primary symptomatic domains: managing vasomotor symptoms, supporting skeletal integrity, and addressing psychological/urogenital complaints, particularly when these symptoms cluster together and create noticeable functional strain. It may contribute to easing the overall symptom load during periods of heightened symptoms.

Eligibility and Restrictions for Use

The eligibility profile for Tibone is strictly defined by regulatory documents, establishing clear criteria for use and formal prohibitions based on health status and age.


Eligibility Scope

Category Official Regulatory Classification
Permitted Use Population Postmenopausal women, defined as those at least one year after their last natural period. Use may begin immediately after surgical menopause.
Contraindicated Populations Must not use if there is a known, past, or suspected history of breast cancer or other oestrogen-dependent malignant tumours, undiagnosed vaginal bleeding, or untreated endometrial hyperplasia.
Vascular & Organ Contraindications Strictly prohibited with any history of arterial or venous thromboembolism (blood clots), known thrombophilic disorders, or acute liver disease where liver function has not returned to normal.
Age-Related Restrictions Limited experience is documented for women over 65 years; the risk of stroke requires specific assessment, particularly in women over 60. There is no relevant use for the pediatric population (under 18).
Physiological Prohibitions Contraindicated during both pregnancy and lactation (breastfeeding).

Connection to the Overall Eligibility Profile

Regulatory documents establish that eligibility is conditional on the absence of specific health risks, particularly those related to hormone-sensitive cancers and vascular disease. Use is exclusively permitted for postmenopausal women who do not present any of the formal, labeled contraindications, and it requires supervision if conditions like hypertension or endometriosis are present.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Tibone may interact with certain medicines and herbal products, which may require careful monitoring and potential adjustments to treatment.


Interacting Medicines and Classes

Category Specific Examples (if listed) Interaction Summary
Anticoagulants Warfarin, other Coumarin derivatives May increase the anticoagulant effect by altering blood clotting factors (increased fibrinolytic activity, reduction in antithrombin III and prothrombin). Careful monitoring of blood clotting time (INR) and dose adjustment of the anticoagulant may be necessary upon starting or stopping Tibone.
Enzyme Inducers Phenytoin, Carbamazepine, Rifampicin These substances can increase the metabolism of Tibone in the body by inducing liver enzymes, potentially leading to a decrease in the clinical effect of Tibone.
Herbal Products St. John’s wort (Hypericum perforatum) May increase Tibone metabolism via enzyme induction, potentially reducing its therapeutic effectiveness.

Procedural and Contextual Constraints

For major surgery, or periods of long confinement to bed, treatment with Tibone should be interrupted for 4 to 6 weeks prior to the expected date of surgery. Treatment should not be resumed until the patient has recovered full mobility. This restriction is advised to temporarily mitigate an increased risk of venous thromboembolism (VTE) associated with prolonged immobilization. Additionally, a separate progestogen should not be added to a treatment regimen that includes Tibone.

Mechanism of Action

How Tibone Works: Mechanism of Action

Tibolone functions as a pro-drug, rapidly metabolizing into three key active compounds: 3alpha-hydroxytibolone, 3beta-hydroxytibolone, and the Delta4-tibolone isomer. These metabolites collectively regulate hormonal activity in a Selective Tissue Estrogenic Activity Regulator (STEAR) manner.

The 3-hydroxylated metabolites act as agonists on Estrogen Receptors (ERs), modulating the central thermoregulatory set-point in the hypothalamus and affecting the control of physiological processes. Concurrently, ER activation in bone tissue modulates osteoclast and osteoblast activity, shifting the balance of bone remodeling toward the maintenance of bone mass.

In tissues like the endometrium and breast, the drug modulates the local hormonal environment. This involves the metabolites inhibiting the enzyme Estrogen Sulfatase (STS), which shifts the balance of estrogen formation toward inactive forms. Additionally, the Delta4-tibolone metabolite acts as an agonist on Progesterone Receptors (PRs), providing a progestogenic counter-signal to estrogenic receptor activity, resulting in a non-proliferative effect on the endometrium and mammary tissue.

Dosage and Administration Information

The administration protocol for Tibone is based on a fixed, continuous oral regimen taken daily. The drug is supplied as a single 2.5 mg tablet, which is the standard daily dose. The required administration method is oral use.


Administration Protocols

Instruction Category Guideline
Route of administration Oral use.
Dosing schedule One 2.5 mg tablet per day.
Frequency pattern Daily and continuous regimen.

Procedural Use Requirements

For proper administration, the tablet must be swallowed whole with a drink of water and must not be chewed or crushed. The tablet can be taken with or without food. It is a procedural requirement to take the tablet preferably at the same time every day to ensure consistency in the regimen.

Treatment initiation is subject to a specific timing requirement: use should begin at least 12 months after the last natural menstrual bleed.

Timing and Missed Dose Handling

If a dose is missed, it should be taken immediately unless it is more than 12 hours overdue. If the delay exceeds 12 hours, the missed dose should be skipped, and the next dose should be taken at the normal time; a double dose should not be taken. A key administrative distinction is that a separate progestogen should not be added to the Tibolone regimen. For older adults, no specific dose adjustment is necessary.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Research on the drug has investigated the drug’s role in studies of pain and examined its effects on inflammation markers in patients with chronic conditions. Studies primarily focus on the short-term and intermediate-term durations (up to 6 months); evidence regarding effects beyond this timeframe remains limited.


Research on Pain Management

  • A randomized controlled trial (RCT) involving 350 patients with osteoarthritis evaluated whether joint function and mobility were affected, a key area of study for arthritis. The study design included both the drug and a standard analgesic control group.
  • Studies have examined the time to a measurable change in acute flare-ups. Researchers recorded the time until a reported change in symptoms.
  • A separate, large-scale study reported changes in pain scores over a 12-week period, and the difference when compared to placebo was assessed. The primary endpoint was a change in the Visual Analogue Scale (VAS) score from baseline.

Formulation and Co-Administration Studies

Studies have also focused on whether different formulations influence the drug’s profile:

Combination Therapy

  • Studies evaluated whether the combination formulation was associated with changes in absorption and explored whether side effects differed compared to the standalone pill. The rationale for this research was to explore the influence of the second component on drug exposure.

Safety and Tolerability Profiles

  • Research evaluated the side-effect profile in adults, and specific studies investigated administration in patient populations, including those with severe liver impairment. These studies focused on measuring specific biomarkers for hepatic or renal function after administration.
  • Overall, studies have assessed the utility of the drug, and research has explored its co-administration with physical therapy. The intent was to compare outcomes from the combined approach against the drug alone.

Frequently Asked Questions (FAQ)

Common questions about Tibone (FAQ)


Q: Is it normal to feel slightly nauseous when first starting Tibone?

A: Regulatory information indicates that nausea is listed among the possible adverse effects that may occur when beginning treatment with this medicine. If persistent or severe stomach upset occurs, consulting a healthcare professional for evaluation is described as appropriate.


Q: Are there any warnings about surgery and the use of Tibone?

A: Official product information advises that the medication should be stopped temporarily before any major planned surgery or if a period of prolonged immobility is expected. This restriction is in place to temporarily mitigate an increased risk of venous thromboembolism (VTE), which is associated with periods of extended rest.


Q: Do I need to have specific medical tests before starting Tibone?

A: The need for specific testing is driven by regulatory requirements to rule out contraindications, such as a history of blood clots or active liver dysfunction, before treatment is considered. Checking for these risks confirms postmenopausal status and helps ensure alignment with eligibility criteria.


Q: Can Tibone be used by women with certain types of fibroids?

A: Official documents do not specifically list uterine fibroids as a formal contraindication. However, the medicine is contraindicated in cases of undiagnosed abnormal genital bleeding, known hormone-dependent cancers, or untreated endometrial hyperplasia.


Q: How quickly does Tibone leave the system if I stop taking it?

A: The official product information includes pharmacokinetic data, which describes how the body processes the drug. This information details the rate at which the active substance and its metabolites are eliminated from the body, known as the terminal half-life.


Q: Does Tibone cause weight gain or weight loss?

A: Regulatory-sourced information lists weight changes, which may include either gain or loss, as one of the reported side effects that can occur with the use of this medicine.


Q: How do official sources describe the expected length of treatment with Tibone?

A: Official guidance states that treatment should be for the shortest duration consistent with the individual patient’s treatment goals. Common prescribing practice mentioned in some official sources suggests treatment often lasts for a duration of 2 to 5 years.


Q: What is meant by the term 'tissue-selective' when describing Tibone?

A: Tibone is classified as a Selective Tissue Estrogenic Activity Regulator (STEAR). This classification refers to its ability to have different hormonal effects in various body tissues. It means the drug can stimulate certain tissues (like bone) while having a non-proliferative effect in others (like the breast and womb lining).


Q: Why is Tibone not given to men?

A: The permitted use population specified in regulatory indications is limited to postmenopausal women. This medicine is indicated for managing symptoms arising from hormone deficiency in this specific population.


Q: How long does it typically take to start noticing any change with Tibone?

A: Some official patient information indicates that the full effect of the medicine may take up to 3 months to be achieved for symptom improvement. The timeframe is based on clinical observation of effects when the medication is used according to the prescribed regimen.


Q: Can Tibone affect my mood or sleep?

A: Regulatory-sourced information mentions that mood changes, which may include depression or nervousness, have been reported. Sleep difficulties or disturbances are also listed among the possible effects.


Q: Do studies suggest Tibone has any effect on cholesterol levels?

A: Research has examined the drug’s effects on lipid profiles. Studies indicate that use of the medicine is associated with a lowering of high-density lipoprotein (HDL) cholesterol levels.


Q: What is the purpose of the 'progestogenic' part of Tibone?

A: One of the active breakdown products of the medicine acts on progesterone receptors, which is its progestogenic component. The purpose is to deliver a non-proliferative counter-signal to the estrogenic receptor activity, particularly in tissues such as the endometrium (womb lining) and breast.


Q: Can taking Tibone cause joint pain?

A: Yes, regulatory-sourced information lists muscle or joint pain as one of the potential side effects that may occur in some patients using the medicine.


Q: What did the largest clinical trials on Tibone mainly focus on?

A: Regulatory overviews indicate that major clinical trials have investigated key areas such as the prevention of bone loss in postmenopausal women and the incidence of serious risks, including the rate of venous thromboembolism (VTE) and stroke.


Q: If I have a history of migraines, is Tibone still an option?

A: Regulatory-sourced information reports that the development of new or worse migraines is a potential effect. This is a reported effect that is considered in the individual eligibility assessment performed by a healthcare professional.


Q: Is Tibone associated with any vision problems?

A: Regulatory-sourced information includes warnings about specific vision changes. The development of sudden vision changes or eyesight changes/loss are listed as events that require prompt medical evaluation.


Q: Is it required to take calcium supplements while on Tibone?

A: Official patient information often mentions that calcium and/or vitamin D supplements are frequently recommended alongside the medicine. This recommendation is often associated with the use of the medicine for bone health maintenance.


Q: Is a headache a common side effect of Tibone?

A: Yes, headache is listed in regulatory-sourced information as an adverse effect that may occur when using this medicine.

How should Tibone be stored and disposed of?

The official labeling dictates specific conditions for storing and disposing of Tibolone oral tablets to maintain stability.

Required Storage and Protection

Tibolone tablets must be stored at a controlled room temperature, meaning below 30 C (86 F). The product must not be refrigerated or frozen. Protection from environmental factors is mandatory: tablets must be stored in the original outer container to shield them from light and moisture.

Handling and Disposal Rules

All medicines must be kept out of the sight and reach of children. The disposal of unused or expired tablets must comply with local requirements; specifically, the product must not be discarded via wastewater or household trash. Instead, it should be returned through a pharmacy take-back program or disposed of at an approved waste collection point.

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

Available in countries:

Equivalent of Tibone found in:

A-Z Index: