Fomene

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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 Fomene

Quick Facts

Property Description
Active ingredient Tibolone (Synthetic Steroid)
Form Oral tablet
Pharmacological class Hormone Replacement Therapy (HRT) Agent
Common use General relief of discomfort associated with menopause
Origin Synthetic (Manufactured)
Status Prescription-only (Rx)

What Exactly is Fomene? (Identity, Composition, and Form)

Fomene is a brand-name, prescription-only medicine containing the active ingredient Tibolone, designed as an oral tablet for systemic use in postmenopausal women. Its active component, Tibolone, is a synthetic steroid hormone drug which is chemically distinct from conventional estrogens. The drug is intended for daily oral administration, making it a convenient treatment option. While Fomene is marketed in specific regions, the underlying active substance, Tibolone, is clinically recognized worldwide for its specialized role in hormone management.

Tibolone itself functions as a prodrug; it is the parent compound that requires the body's own enzymes to metabolize and convert it into its active forms after it is taken. This unique metabolic requirement is central to its specific effects.

What Type of Hormone Therapy is Fomene? (Classification and General Purpose)

Fomene is classified as a Selective Tissue Estrogenic Activity Regulator (STEAR), which is a specialized category of Hormone Replacement Therapy (HRT) agent. This unique pharmacological classification reflects its ability to activate hormonal receptors in a highly tissue-specific manner.

Pharmacological studies confirm that Tibolone is metabolized into three active substances that collectively exhibit estrogenic, progestogenic, and androgenic activities. This is a key differentiating factor from older HRT regimens. This three-pronged hormonal influence helps restore a functional hormone balance in women after menopause, providing a comprehensive approach to alleviate the general discomforts and effects linked to hormone decline, which is its general therapeutic purpose.

What side effects are possible with Fomene?

Possible Side Effects and Safety Information

The safety profile for Fomene (Tibolone) is formally documented based on regulatory classifications, detailing the frequency and nature of adverse reactions observed during clinical use and post-marketing surveillance. This information strictly describes the established safety characteristics of the medicine.


Frequency-Classified Adverse Reactions

Adverse effects are categorized by their documented incidence. The most Common reactions (occurring in up to 1 in 10 women) generally involve the Reproductive System and Metabolism.

Classification Examples of Officially Listed Effects
Common Vaginal bleeding or spotting, weight increase, lower abdominal pain, hirsutism (unusual hair growth), and breast tenderness.
Uncommon Acne.

Breakthrough bleeding or spotting may occur during the first 3 to 6 months of treatment, a pattern explicitly noted in regulatory documents.


Serious and Important Identified Risks

Official regulatory documentation identifies significant, low-frequency risks that warrant attention. These serious adverse reactions are associated with the use of Fomene, and their risk may increase with the duration of use:

  • Vascular Events: Documented increased risk of venous thromboembolic events (VTE), including deep vein thrombosis, and an increased risk of ischaemic stroke.
  • Cancers: Increased risks of endometrial cancer (and hyperplasia) and breast cancer are officially noted, consistent with hormone therapy agents.

Population-Specific Safety Considerations

Safety statements include constraints for specific groups. The risk of stroke is particularly relevant for women over 60 years of age. Use is formally contraindicated in women with a history of certain cancers, active liver dysfunction, or prior thromboembolic disease. Additionally, Tibolone may enhance the anticoagulant effect of certain blood thinners, which is a key safety interaction noted in official labels.

Overdose and Emergency Response

Overdose and When to Seek Help for Fomene (Tibolone)

Documented Overdose Manifestations

Regulatory product information defines the expected clinical profile following the acute ingestion of an excessive number of Fomene tablets. The two primary documented manifestations are transient vaginal bleeding and specific gastrointestinal disturbances, including occurrences of nausea or vomiting. Official documentation explicitly states that serious toxic effects are not anticipated to result from this type of acute overdose. This classification, derived from regulatory data, establishes the generally expected severity level of the event.

Emergency Actions Required

Despite the low expectation of serious toxicity, immediate medical attention must be sought for any suspected or confirmed overdose exposure. This requirement for urgent medical help is a mandatory action prescribed by regulatory authorities even if no signs of discomfort or apparent poisoning are immediately evident. The mandate to seek attention is necessary to ensure that clinical assessment and medical observation can be performed to evaluate the extent of the exposure and manage any resulting symptoms.

Management Principles

Management of Fomene overdose is strictly limited to symptomatic treatment and appropriate supportive care. The official regulatory prescribing information confirms that no specific antidote is known or documented to counteract the effects of an overdose. Consequently, the intervention strategy is focused on supportive measures that address the documented symptoms, such as transient vaginal bleeding or gastrointestinal upset.

Therapeutic Uses of Fomene

Fomene (Tibolone) is considered relevant in clinical settings that involve acute or disruptive symptom patterns associated with menopause. Its use is relevant when supportive symptom management is appropriate, as it is commonly used to help with symptoms related to physical discomfort and to support skeletal health. It is indicated as relevant across domains where additional symptomatic support is needed, addressing symptom clusters that may become intense or disruptive.

Fomene is commonly used to address certain postmenopausal manifestations, including vasomotor symptoms (such as hot flashes and night sweats), urogenital discomfort (like vaginal dryness and soreness), and to manage bone mineral density loss.

“Fomene is applied across domains where additional symptomatic support is needed, addressing symptom clusters that may become intense or disruptive.”

This support provides support that helps ease the overall symptom burden, particularly during phases when symptoms become more noticeable. It assists with maintaining functional stability and may help patients cope more steadily with symptom fluctuations that interfere with daily comfort.


Quick Fact: Use for Symptom Clusters Fomene is commonly used when symptoms create noticeable interference with daily functioning, and is relevant for managing physical discomfort, psychological strain, and long-term skeletal health support.

Eligibility and Restrictions for Use

Who Can and Cannot Use Fomene?

Fomene (Tibolone) is an oral synthetic steroid intended for Hormone Replacement Therapy (HRT) and its use is strictly governed by regulatory eligibility criteria based on physiological status and specific medical history.

Eligibility for Use

Use is restricted exclusively to postmenopausal women, and treatment initiation must occur at least 12 months after the woman's last natural menstrual bleed. Women who experience surgical menopause may begin treatment immediately.

Absolute Contraindications (Must Not Use)

Fomene is strictly contraindicated and must not be used in women who have:

  • A known, past, or suspected history of breast cancer or other estrogen-dependent malignant tumors.
  • Active or a history of Venous Thromboembolism (VTE, DVT, PE) or Arterial Thromboembolic Disease (stroke, heart attack).
  • Acute liver disease or chronic liver disease where liver function tests have not returned to normal.
  • Undiagnosed vaginal bleeding or untreated endometrial hyperplasia.
  • Known thrombophilic disorders or a confirmed hypersensitivity to the active substance.

Age and Physiological Restrictions

The medicine is contraindicated during pregnancy and lactation.

It has no relevant use in the pediatric or adolescent population. While no specific dose adjustment is required for older adults, regulators note limited experience in women over 65 years, and the stroke risk must be specifically considered in women over 60.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Fomene (Tibolone) is documented to interact with several classes of medicines, primarily through metabolic changes and effects on coagulation.

Interaction Scope

Property Official Regulatory Information
Medicinal product categories Oral Anticoagulants, Anti-epileptic drugs, Anti-tuberculosis drugs, Aromatase inhibitors, Herbal products.
Specific interacting medicines Warfarin, Rifampicin, Phenytoin, Carbamazepine, Lamotrigine, Anastrozole, St John's wort.
Mechanistic basis (in label) Enzyme Induction (leading to reduced plasma concentrations of Fomene's active metabolites).
Timing-based rules None explicitly stated as mandatory co-administration separation times.

Official Interaction Statements

  • Exposure Reduction Risk: Co-administration with enzyme-inducing medicines, such as Rifampicin, Phenytoin, or Carbamazepine, may reduce the plasma concentration of Fomene's active compounds, risking reduced therapeutic efficacy. The herbal product St John's wort also carries this documented risk.
  • Pharmacodynamic Enhancement: Fomene may enhance the anticoagulant effect of coumarin-derived oral anticoagulants, such as Warfarin. This requires the monitoring of coagulation parameters (e.g., INR) during co-administration.
  • Other Drug Exposure: Co-administration with Fomene may result in a decrease in the serum concentration of drugs like Lamotrigine.
  • Avoid Combination: The co-administration of Fomene with other hormonal agents, particularly Aromatase Inhibitors (e.g., Anastrozole), is advised to be avoided as it may diminish the therapeutic effect of the co-administered medicine.

Mechanism of Action

Prodrug Metabolism and Multitargeted Activation

Fomene's active component, Tibolone, is a prodrug that undergoes rapid metabolic conversion into three distinct active metabolites. These compounds act as agonists across three types of steroid receptors—Estrogen Receptors ( ERs), Progesterone Receptors (PRs), and Androgen Receptors (ARs)—resulting in simultaneous estrogenic, progestogenic, and androgenic receptor modulation. This molecular foundation initiates the cascades necessary for systemic physiological modulation.


Intracrine Regulation and Tissue Selectivity

The drug is classified as a Selective Tissue Estrogenic Activity Regulator (STEAR) because its effects are highly controlled at the cellular level. In tissues like the endometrium and breast, Fomene's metabolites modulate local enzymes to promote estrogen inactivation. The enzyme-mediated estrogen inactivation in these tissues results in a reduction of local ER agonism, differentiating the physiological response from that seen in other ER-sensitive tissues. This sequence establishes the drug's characteristic tissue-specific activity profile.


Causal Cascade for Central and Skeletal Modulation

The Estrogen Receptor agonism in the central nervous system (CNS), particularly the hypothalamus, triggers a mechanistic cascade that directly influences the center for body temperature control. Simultaneously, ER activation in the bone structure modifies the balance of bone cell activity. This systemic modulation affects the physiological set point of the hypothalamic center, and the action alters the cellular balance of bone remodeling toward reduced osteoclast activity.

Dosage and Administration Information

How to Use Fomene: Official Administration Guidelines

Fomene (Tibolone) is an oral medication with a continuous daily administration schedule, governed by specific instructions outlined in official product documentation. These guidelines establish the high-level framework for its proper use.


Administration Scope

Feature Official Instruction
Route of administration Oral use only.
Dosing schedule One 2.5 mg tablet per day is the standard continuous regimen.
Timing in relation to meals May be taken with or without food, as absorption is not significantly affected.
Preparation requirements The tablet must be swallowed whole with water and should not be crushed or chewed.
Age-group administration No dose adjustment is necessary for older adults. The drug is not indicated for the pediatric population.
Missed-dose rule Take a missed dose as soon as remembered, unless it is more than 12 hours overdue, in which case the missed dose must be skipped.
Special procedural conditions The tablet should be taken at the same time every day. A separate progestogen should not be added to the regimen.

Initiation and Duration Principles

Treatment initiation is restricted to women who are at least 12 months past their last natural menstrual bleed to ensure genuine postmenopausal status. In alignment with general Hormone Replacement Therapy (HRT) guidance, Fomene is intended to be used at the lowest effective dose for the shortest duration necessary for its prescribed use, with the regimen remaining continuous and once-daily.

These official instructions define the standardized procedural use of Fomene, establishing a fixed daily dose and a consistent, non-cyclical administration pattern reserved for a specific, defined patient demographic.

Recent Clinical Evidence

Evidence for Relief of Physical Discomforts of Menopause

The research on Fomene (Tibolone), including studies on hot flushes, sweating, and urogenital symptoms, primarily comes from short- to intermediate-term Randomized Controlled Trials (RCTs). Researchers monitored the frequency and severity of these symptoms over defined time intervals using patient diaries. Studies monitored hot flushes and reported lower measurements in the groups receiving Fomene compared to the inactive control groups. For urogenital discomfort, research explored the effect on objective markers and documented changes in patient-reported outcomes. Comparative evidence against all types of conventional combined hormone therapy is still being characterized by research, as some study results have varied or shown heterogeneity.


Evidence for Support of Bone Mineral Density

The research on Fomene for managing bone mineral density (BMD) changes relies on dedicated, large-scale studies, including long-term RCTs. The primary focus was the change in BMD at key sites, measured using specialized X-ray scans. Data show patterns related to higher bone density measurements in the groups receiving Fomene compared to the non-active control groups. Research highlights the documentation of differences in the number of fracture events between the Fomene groups and controls in some observational settings.


Research into Sexual Function and Related Symptoms

Research has explored Fomene in studies examining outcomes related to sexual function and libido. Findings were mixed across different studies, meaning certainty remains low regarding Fomene's influence across all aspects of sexual function. Evidence quality varies across studies, and data for certain subgroups remain insufficient.


Research Gaps and Areas of Uncertainty

Research gaps include the inconsistent findings or variability of evidence when Fomene is studied against all conventional hormone therapy agents for symptom relief. Furthermore, follow-up durations were limited in many initial RCTs, meaning the research provides limited insight into long-term stability.

Frequently Asked Questions (FAQ)

Common questions about Fomene (FAQ)


Q: Can Fomene be taken long-term?

Official guidelines state that Fomene, consistent with general hormone therapy principles, is intended to be used at the lowest effective dose for the shortest duration necessary for its prescribed purpose. While use for two to five years is commonly reported, the need for continued treatment is typically re-evaluated periodically by a medical professional.


Q: What happens if I miss a dose of Fomene?

If a dose is missed, regulatory instructions advise taking it as soon as it is remembered. However, if the dose is more than 12 hours overdue, the missed dose must be skipped entirely. Inconsistent administration, such as missing doses, is noted in regulatory documents as a pattern that may be associated with breakthrough vaginal bleeding or spotting.


Q: How quickly does Fomene start to work?

Improvement of menopausal symptoms generally begins within a few weeks of starting treatment. Some official sources note that the establishment of the medicine's full effect is typically observed after treatment has been continued for at least 3 months.


Q: Is Fomene the same as [common competitor drug name]?

Fomene is classified as a Selective Tissue Estrogenic Activity Regulator (STEAR), which is a specialized type of hormone therapy. Its active substance, Tibolone, is unique because it is metabolized into three compounds that provide simultaneous estrogenic, progestogenic, and androgenic activities, setting it apart from conventional combined Hormone Replacement Therapy (HRT) agents.


Q: Does Fomene affect blood pressure?

Official regulatory documents identify a need for caution in patients with a history of certain conditions like epilepsy or migraine. However, some clinical studies examining Tibolone have documented that it was not found to influence 24-hour blood pressure in the postmenopausal women who participated in those studies.


Q: Can Fomene be crushed or split?

No, the official administration instructions state that Fomene tablets must be swallowed whole with water. The tablet should not be crushed or chewed.


Q: Is Fomene used for pain relief?

Fomene is formally indicated for the treatment of symptoms resulting from natural or surgical menopause and for the prevention of osteoporosis. It is not indicated as a general pain reliever.


Q: Is it normal to feel a mild headache when first starting Fomene?

Yes, regulatory documents list headache as an adverse effect that may occur with Fomene. Other related effects listed in the side effect profile include dizziness, nausea, and abdominal pain.


Q: Are there any skin reactions associated with Fomene?

Official documents describe some dermatological effects associated with use. Hirsutism (unusual hair growth) is listed as a Common reaction, and acne is listed as an Uncommon reaction.


Q: Why is Fomene prescribed for [condition mentioned in core text]?

Fomene is prescribed because its active ingredient, Tibolone, acts as a Selective Tissue Estrogenic Activity Regulator (STEAR). This action helps to substitute for the decline in hormone production that occurs after menopause, which serves to both alleviate bothersome menopausal symptoms and prevent bone mineral density loss.


Q: Why do official documents mention 'unknown' side effects for Fomene?

The 'unknown' classification is common on regulatory documents for many medicines. It means that while a particular health event may have been reported during surveillance, the incidence cannot be accurately estimated or a definitive causal relationship cannot be established based on the available data from clinical trials or post-marketing reports.


Q: Is Fomene used in combination with other treatments?

Official documents advise that the co-administration of Fomene with other hormonal agents, particularly Aromatase Inhibitors, should be avoided. It is not intended for use in combination with other Hormone Replacement Therapy agents.


Q: Does Fomene cause weight gain or loss?

Regulatory documents list weight increase as a Common adverse reaction associated with Fomene use. In addition, some clinical data has described patterns related to changes in body composition, including documentation of effects on total body fat content and lean body mass.


Q: How long does Fomene stay in your system?

Fomene is rapidly absorbed by the body. The active metabolites that produce its therapeutic effects typically have a half-life of around 7 hours. The time to reach peak concentration in the body is usually within one to two hours after taking the tablet.


Q: Does Fomene interact with supplements like vitamins or herbal products?

Yes, official documents explicitly mention that the herbal product St John's wort may cause an interaction. Taking this supplement with Fomene may reduce the plasma concentration of Fomene’s active compounds, potentially risking reduced therapeutic efficacy.


Q: Does Fomene affect concentration or driving ability?

The official side effect profile lists adverse effects such as headache and dizziness. Regulatory agencies generally state that any medication associated with effects like dizziness or headache may potentially affect concentration or the ability to safely operate machinery.


Q: What kind of studies have been done on Fomene?

Research documents supporting the drug's use describe studies that include both short- and long-term Randomized Controlled Trials (RCTs). These studies primarily focused on measuring the relief of menopausal symptoms and the effect on bone mineral density, alongside general pharmacokinetics studies.


Q: What is the usual duration of treatment with Fomene?

While use is for the shortest effective duration, clinical guidance suggests that it is common for the medicine to be taken for 2 to 5 years. After this time, a medical professional typically re-evaluates the balance of benefits and potential risks to decide if continued treatment is appropriate.


Q: Are there different strengths of Fomene available?

The standard continuous daily regimen is one 2.5 mg tablet per day. Regulatory documents may also note that lower doses, such as 1.25 mg, have been explored in clinical studies.


Q: How does Fomene differ from a placebo in clinical trials?

In clinical trials, groups receiving Fomene showed documented differences in patient outcomes compared to inactive control groups (placebo). This includes studies reporting lower measurements of hot flushes and higher bone density measurements in the Fomene groups.


Q: Does Fomene help with symptoms other than the primary condition it treats?

Beyond the primary indications, regulatory documents and supporting research state that Fomene has been examined in studies exploring outcomes related to mood and libido. It is also noted to counteract local urogenital symptoms, such as vaginal dryness.


Q: Why do some people need a higher dose of Fomene than others?

The official continuous daily regimen is fixed at one 2.5 mg tablet per day for all patients who are eligible to use Fomene. Regulatory documents specifically state that no dose adjustment is necessary for older adults.


Q: Are there any specific laboratory tests needed before starting Fomene?

Official regulatory documents do not mandate a single specific lab test for all patients before starting Fomene. However, general medical guidelines recommend that a doctor perform individualized basic and elective physical and laboratory examinations before starting any hormone therapy, which are typically repeated at regular intervals.

How should Fomene be stored and disposed of?

How to Store and Dispose of Fomene?

The official regulatory profile defines mandatory conditions for storing Fomene tablets to protect stability.

Fomene must be stored within a room temperature range, typically below 25°C or between 15°C and 30°C. The product requires explicit protection from both light and moisture and must remain sealed in the original container and blister packaging. Storage in excessively hot or freezing environments is prohibited. As with all medicines, Fomene must be stored strictly out of the sight and reach of children.

For disposal, regulatory documents require the use of drug take-back programs whenever possible. If such a program is unavailable, expired or unused tablets must not be flushed down a toilet or poured down a drain, but instead should be disposed of in household trash following mandated steps to prevent environmental release, in accordance with local requirements.

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

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