Reduclim

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Medically reviewed

Marina Burgos

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 Reduclim

Property Description
Active Ingredient Tibolone
Form Oral tablet
Pharmacological Class Synthetic Steroid Hormone Drug / Selective Estrogen Activity Regulator (STEAR)
General Purpose Mitigation of menopausal symptoms and bone density maintenance
Origin Synthetic steroid

Reduclim is a prescription-only medicinal product containing the active ingredient Tibolone, which is a synthetic steroid compound. It is classified as a Hormone Replacement Therapy (HRT), although its mechanism is distinctly characterized as a Selective Estrogen Activity Regulator (STEAR). This designation reflects its targeted influence on hormonal receptors in various body tissues, a key differentiating feature from traditional, non-selective HRT treatments. Tibolone is used to manage the vasomotor and urogenital symptoms associated with menopause. This means the medication helps to alleviate common discomforts like hot flashes and supports the health of the lower urogenital tract.


What Type of Medicine is Reduclim? (Identity and Classification)

Reduclim is categorized as a synthetic steroid hormone drug, belonging to the Anatomical Therapeutic Chemical (ATC) group G03CX, which covers other estrogens. The formulation is a monotherapy delivered as an oral tablet for oral administration. The active ingredient, Tibolone, acts as a precursor that converts in the body into three distinct active metabolites. This tri-hormonal activity pattern facilitates selective interaction with estrogen, progesterone, and androgen receptors. This precise pattern ensures estrogenic support in tissues like bone, while the progestogenic component provides a counter-effect on the uterine lining.


What is the General Purpose of Reduclim? (High-Level Benefit)

The general purpose of Reduclim is to help alleviate the symptoms associated with oestrogen deficiency in its target patient group, postmenopausal women. Its selective hormone activity is utilized to mitigate common menopausal discomforts and to support the prevention of bone loss, or osteoporosis. This high-level benefit is linked to the drug's ability to selectively provide estrogenic and androgenic effects in key body systems affected by the menopausal transition, thereby contributing to overall well-being.

What side effects are possible with Reduclim?

Possible Side Effects and Safety Information (Reduclim: Tibolone)

The official safety profile of Reduclim, containing the active substance Tibolone, is formally classified by regulatory authorities based on clinical data. The side effects are categorized by frequency and the organ systems affected, while serious risks are addressed separately in regulatory warnings.


Frequency-Classified Adverse Reactions

The most frequently reported adverse reactions are classified as Common (affect up to 1 in 10 women), primarily affecting the reproductive system and breasts. These include vaginal bleeding or spotting, breast pain or discomfort, and endometrial thickening (hyperplasia). Common effects in other systems include abdominal or pelvic pain, unusual hair growth, and weight gain.

Uncommon adverse reactions (affect up to 1 in 100 women) listed in official documents include acne, migraine, dizziness, and fluid retention.


Documented Serious Safety Constraints

Official regulatory sources note that the use of this medicine is associated with an increased risk for several serious conditions, including Stroke (predominantly ischaemic) and Venous Thromboembolism (VTE), which encompasses Deep Vein Thrombosis (DVT) and Pulmonary Embolism. Furthermore, an increased risk of Breast Cancer, Endometrial Cancer, and Ovarian Cancer is documented.

Population and Time-Related Safety Patterns

Certain risks are officially linked to the duration of exposure; for instance, the increased risk of VTE is observed to be most pronounced during the first year of use. The risk for malignancies, such as breast cancer, increases with the overall duration of use.

Safety constraints are specific to certain populations: the risk of endometrial cancer is a particular concern for women with an intact uterus, and special consideration regarding stroke risk is necessary for women over 60 years of age, as noted in official regulatory documents.

Overdose and Emergency Response

Overdose and when to seek help

This section describes the officially documented manifestations and mandated emergency actions for Reduclim (Tibolone) overdose, as stated in government regulatory documents.

Overdose from Reduclim is generally considered to have a low acute toxicity profile for minor excessive doses; however, the possibility of serious outcomes necessitates an immediate medical response.


Documented Manifestations and Regulatory Response

Documented Overdose Manifestations Required Emergency Actions
Nausea (feeling sick) and vomiting (being sick) Seek immediate medical attention for any suspected overdose.
Vaginal bleeding or spotting Contact emergency services if serious symptoms, such as trouble breathing or passing out, are observed.

Regulatory guidance dictates that urgent medical attention must be sought immediately following excessive ingestion, even if an individual displays no signs of discomfort or poisoning. Acute overdose from taking a single extra tablet is officially assessed as unlikely to cause any harm, but professional evaluation is mandatory.


Supportive Management and Antidote Information

There is no specific antidote known for Reduclim overdose. Overdose management is officially defined as requiring symptomatic and supportive treatment. Medical procedures may include monitoring vital signs (temperature, pulse, breathing rate, and blood pressure) and conducting blood and urine tests in a medical setting.

Therapeutic Uses of Reduclim

What Reduclim Treats: Main Uses and Benefits

Reduclim may be part of symptomatic management in contexts marked by increased discomfort or tension. Certain medication categories are applied in clinical settings where short-term symptomatic assistance is needed to address acute distress. The product is generally used to help manage groups of symptoms that interfere with daily comfort, and may help patients cope more steadily with symptom fluctuations.


Key Therapeutic Domains

The medicine may be considered relevant for helping with periods of heightened discomfort and addressing episodic symptom patterns. It is applied during phases of increased distress or discomfort to address symptoms that create noticeable physiological strain. It is also commonly used across conditions involving recurrent or episodic manifestations, where symptoms may become intense or disruptive. The overall therapeutic aim is to contribute to improved comfort during symptomatic periods.

Reduclim is commonly used to help with symptoms related to physical discomfort, symptoms related to systemic imbalance, and symptoms related to heightened physiological activity. This supportive use is common when additional management of discomfort is required.

Quick Fact: Management of Acute Symptoms
Reduclim is commonly used when short-term symptomatic assistance is needed for acute episodes of discomfort or tension.

Reduclim contributes to improved day-to-day comfort during periods of heightened symptoms, assisting with maintaining functional stability.

Regulatory References

  1. NIH National Institute of Mental Health overview of Mental Health Medications

Eligibility and Restrictions for Use

Who can and cannot use Reduclim?

Reduclim (Tibolone) is a prescription-only medicine with strict eligibility rules defined by regulatory authorities.


Eligible Populations and Restrictions

Criteria Official Regulatory Status
Primary Eligibility Restricted to postmenopausal women (more than one year after last natural period).
Surgical Menopause Treatment may be initiated immediately following surgical removal of the ovaries.
Older Adults (65+) Use is authorized, but there is limited experience in treating women over this age.
Conditional Use Patients with pre-existing conditions like hypertension, epilepsy, or uterine fibroids require close supervision.

Absolute Contraindications (Must Not Use)

Use of Reduclim is contraindicated and absolutely prohibited for individuals with any of the following conditions:

  • A current or past history of breast cancer or any oestrogen-dependent malignant tumours.
  • A history of arterial thromboembolic disease (e.g., stroke, angina, heart attack) or venous thromboembolism (e.g., DVT, pulmonary embolism).
  • Acute liver disease or any liver condition where function tests have failed to return to normal.
  • The presence of undiagnosed genital bleeding or untreated endometrial hyperplasia.
  • Known thrombophilic disorders or a rare inherited condition like Porphyria.
  • Pregnancy or breastfeeding (lactation).

What should I know about interactions with other medicines?

Reduclim contains the active substance tibolone, which has a complex hormonal profile that can affect how other medicines work in the body. Although no examples of interactions have been reported in clinical practice in some official documents, several potential interactions are considered based on its metabolic pathway.

Effect on Blood Clotting

Tibolone may enhance the effect of anticoagulants (medicines that help to prevent blood clots), such as warfarin. Concurrent use requires close monitoring of blood coagulation parameters to avoid the risk of excessive bleeding.

Metabolic Interactions

The metabolism of tibolone can be increased by certain medicines that induce liver enzymes, particularly the cytochrome P450 3A4 (CYP3A4) system. This increased breakdown may lead to decreased levels and reduced effectiveness of Reduclim. Examples of medicines that may have this effect include:

  • Anticonvulsants (e.g., phenytoin, carbamazepine)
  • Anti-infectives (e.g., rifampicin, a medicine for tuberculosis)
  • Herbal remedies (e.g., St. John’s wort)

Timing and Precaution

Women taking any of these interacting medicinal products, or any other prescription, non-prescription, or herbal products, should always inform their doctor or pharmacist. The healthcare provider must carefully assess the benefits and risks of combination therapy and adjust monitoring or dosages as necessary.

Mechanism of Action

How Reduclim Works

Reduclim's mechanism of action begins with a selective interaction at defined biological targets—specific receptors located on the surface of target cells. This binding event modulates the typical function of these receptors, initiating the pharmacological effect by influencing pathways associated with heightened physiological signals.

Following receptor engagement, the drug modifies the subsequent molecular cascades and signal sequences within the cell. This interference is relevant in systems where specific transmitters or mediators dominate, leading to the suppression or adjustment of excessive signaling that drives dysregulated cellular processes. The mechanism acts within well-characterized signal transduction pathways.

By exerting a targeted effect on key regulatory systems and influencing internal feedback mechanisms, Reduclim's action alters system dynamics, resulting in a more regulated state within the affected pathways. This process characterizes the predictable physiological adjustments and the dampening of overactive or dysregulated systemic signals at the pharmacodynamic level.

Dosage and Administration Information

Administration and Dosing Schedule

Reduclim is an oral tablet containing 2.5 mg of the active substance, Tibolone. The established regimen is a continuous daily dose of one tablet (2.5 mg) taken once daily, where the course of treatment has no scheduled interruptions.

The tablet should be swallowed whole with water and must not be crushed or chewed. To maintain consistent systemic levels, the tablet should be taken preferably at the same time every day, although it may be taken with or without food as this does not significantly affect drug absorption.

Initiation and Contextual Rules

Initiation Timing: Therapy for women undergoing natural menopause must not be initiated until at least 12 months after the final natural menstrual period. For women who have had a surgical procedure, administration may commence immediately.

Handling Missed Doses: If a daily dose is missed and the scheduled time has passed by more than 12 hours, that dose should be skipped entirely. The regular schedule should then be resumed the following day, and a double dose should never be taken to compensate for the omission.

Special Conditions: The regimen is typically a fixed dose, and no dose adjustment is necessary for elderly patients. The official use protocol explicitly excludes the concurrent administration of a separate progestogen.

Recent Clinical Evidence

Research evidence / Overview of studies for Reduclim

Evidence for the Management of Vasomotor and Urogenital Symptoms

The clinical evaluation for Reduclim has primarily relied on Randomized Controlled Trials (RCTs) and Systematic Reviews that examined the medicine in postmenopausal women. Researchers focused on outcomes related to physical discomfort, monitoring changes in the frequency and perceived severity of vasomotor symptoms (hot flushes) and urogenital health indices. Studies reported measurements indicating changes in the frequency of hot flushes and indices of vaginal atrophy over the study period. The majority of high-quality data related to measured symptom change spans the short to intermediate term (up to two years).

Evidence for the Prevention of Bone Mineral Density Loss (Osteoporosis Prevention)

Research for this indication is based on Randomized, Double-Blind, Placebo-Controlled Trials applied in studies monitoring Bone Mineral Density (BMD) outcomes. Researchers primarily examined the change in BMD at key skeletal areas, such as the spine and hip. Controlled trials reported measurements indicating patterns related to change in BMD at both the spine and hip over 24-month periods, compared to placebo. Large long-term studies also monitored fracture occurrence, a specific clinical endpoint.

Study Duration and Recognized Research Gaps

Studies focusing on BMD outcomes typically concluded at an intermediate duration of 24 months. While longer observational studies have provided extended data, high-certainty, randomized data for long-term clinical outcomes like fracture occurrence is limited because major trials designed to track these effects were stopped prematurely. Evidence quality varies across studies, particularly for many of the secondary outcomes like mood or libido, where findings were mixed or certainty remains low. Data for certain subgroups beyond the specific study populations also remain insufficient.

Key Studies & References

  1. Tibolone for postmenopausal women: systematic review of randomized trials

Frequently Asked Questions (FAQ)

Common questions about Reduclim (FAQ)


Q: I'm worried about the side effects listed; how common are they really?

A: Official documents classify adverse reactions based on how frequently they were reported in studies. The most frequent effects, such as vaginal bleeding or breast pain, are labeled as Common, meaning they may affect up to 1 in 10 women. Effects classified as Uncommon, such as acne or dizziness, are reported in up to 1 in 100 women.

Q: Are generic versions of Reduclim available?

A: The active ingredient in Reduclim is Tibolone. Generic versions containing the same active substance are available in some regions. These generic products are required by regulators to be essentially similar to the originally approved reference medicine.

Q: Is it normal to feel a little [non-specific symptom] when first starting Reduclim?

A: It is officially recognized that common adverse reactions, such as vaginal spotting or breast discomfort, are frequently reported when treatment is initiated and may lessen as the body adjusts. It is generally advised that any irregular bleeding that continues beyond the first six months of use be discussed with a healthcare provider.

Q: Is Reduclim the same type of medicine as [similar drug name]?

A: Reduclim is classified as a Synthetic Steroid Hormone Drug and is functionally described as a Selective Estrogen Activity Regulator (STEAR). While it is used in the field of hormonal therapy, its distinct mechanism involves selectively targeting and activating different hormone receptors in specific body tissues.

Q: How quickly can I expect Reduclim to start working?

A: According to official pharmacokinetic data, the active substance is quickly converted into its active forms within the body, reaching its highest levels in the bloodstream approximately 1 to 2 hours after being taken. Observed symptom relief is typically an outcome that is assessed over the course of treatment, rather than immediately following administration.

Q: Can Reduclim cause long-term side effects that I should know about?

A: Official data indicates that the overall duration of use is linked to an increased risk of certain serious conditions, including Breast Cancer and Endometrial Cancer. Specifically, the risk of Venous Thromboembolism (VTE) is officially observed to be most pronounced during the first year of use of the medicine.

Q: Is Reduclim suitable for people who have kidney issues?

A: Studies on the pharmacokinetics of the active substance indicate that its levels in the body were not significantly affected by varying degrees of kidney function. This suggests that the official use protocol does not generally require a different dose for patients with renal impairment.

Q: What is the overall goal of treatment when taking Reduclim?

A: The general purpose, as stated in regulatory documents, is to help alleviate the discomforts associated with oestrogen deficiency in postmenopausal women. This involves mitigating common menopausal discomforts, like hot flashes, and to support the prevention of bone loss, or osteoporosis.

Q: Can I stop taking Reduclim if I start to feel better?

A: The continuation of any hormonal therapy is subject to a careful, formal appraisal of the risks and benefits. Official guidance states that therapy should be continued only as long as the benefit is considered to outweigh the risks, as determined by a healthcare professional.

Q: Are there any lifestyle changes recommended when using Reduclim?

A: While there are no mandatory concurrent lifestyle changes, the Patient Information Leaflet generally emphasizes necessary precautions, such as keeping the medicine out of the sight and reach of children. Regulatory warnings reference the importance of managing known risk factors for certain serious conditions, such as Venous Thromboembolism (VTE).

Q: What is the difference between how Reduclim works and how a natural supplement works?

A: Reduclim is a Synthetic Steroid Hormone Drug whose action is based on a defined and regulated pharmacological mechanism. This involves the rapid conversion of the active substance into three distinct active metabolites that selectively target specific hormonal receptors in the body, providing a targeted effect.

Q: Does Reduclim cause weight gain or weight loss?

A: Weight gain is listed as a Common adverse reaction in the official product information, meaning it may affect up to 1 in 10 women using the medicine. There is no official report or classification linking the medicine to the side effect of weight loss.

Q: Is Reduclim considered a long-term treatment or a short-term one?

A: The duration of treatment is determined by the individual patient and their symptoms. Official guidance requires the medicine to be used for the shortest possible duration and only continued as long as a careful annual assessment shows that the therapeutic benefit clearly outweighs the potential health risks.

Q: Where can I find summaries of the research evidence for Reduclim?

A: Summaries of clinical trial data and evidence overviews are generally available through publicly accessible government and intergovernmental databases. Examples of such resources include the websites maintained by the National Institutes of Health (NIH) or other national regulatory bodies.

Q: Why do doctors check liver function before prescribing Reduclim?

A: The medicine is contraindicated, meaning it is absolutely prohibited, for individuals with acute liver disease or a history of liver disease if function tests have failed to return to normal. Liver function must be checked to ensure the patient does not have a condition that prohibits the safe use of the medicine.

Q: What is the shelf life of Reduclim?

A: The specific shelf life (expiry date) is printed on the product packaging. To maintain quality, the medicine must be kept in the original carton and stored below 30 C and protected from light and moisture.

Q: Is Reduclim known to cause any skin reactions or rashes?

A: Acne is listed as an Uncommon adverse reaction, meaning it may affect up to 1 in 100 women. Post-marketing reports from official documents have also included occurrences of non-specific skin effects such as rash and itching.

Q: Does Reduclim affect sleep patterns?

A: Clinical studies have been conducted to examine the medicine in the context of alleviating sleep disturbances often associated with menopausal symptoms. Some research suggests the medicine may contribute to an improvement in sleep quality and duration.

Q: What are the known effects of Reduclim on driving or operating machinery?

A: Official documents generally report that the medicine is not expected to affect the ability to drive or operate machinery. However, the side effect profile does list dizziness and migraine as uncommon effects, which could potentially impact alertness in some individuals.

Q: How do I know if Reduclim is working for me?

A: The medicine is intended to provide relief from symptoms associated with oestrogen deficiency. Observed benefit is typically assessed based on expected therapeutic outcomes, such as a reduction in the frequency and severity of hot flushes and the maintenance of bone mineral density over time.

Q: Are there any specific laboratory tests required while taking Reduclim?

A: Official regulatory documents recommend that periodic check-ups be conducted, with the frequency and nature of the check-ups adapted to the individual patient. Close monitoring of blood coagulation parameters is also specifically required if the medicine is taken concurrently with certain blood-thinning medicines.

Q: If I have allergies, is Reduclim generally considered safe?

A: The medicine is contraindicated (absolutely prohibited) for individuals who have a known hypersensitivity or allergy to the active substance, Tibolone, or to any of the non-active ingredients (excipients) listed in the official documents.

Q: What are the main things I should discuss with my healthcare provider before starting Reduclim?

A: The discussion should cover all known contraindications (prohibited uses), including any personal or family history of breast cancer, blood clots (VTE/stroke), acute liver disease, and undiagnosed genital bleeding. Official documents emphasize the importance of reviewing all other prescription and non-prescription medicines being used due to potential interactions.

How should Reduclim be stored and disposed of?

How to Store and Dispose of Reduclim?

Reduclim (Tibolone) requires specific conditions to maintain its quality and stability, as defined by regulatory documents.


Storage Requirements

Condition Requirement
Temperature Store below 30 C (ambient room temperature); do not refrigerate or freeze.
Protection Keep protected from light and moisture.
Packaging Must remain in the original blister and outer carton until use.

Handling and Disposal

Reduclim must be kept out of the sight and reach of children.

To dispose of unused or expired tablets, follow local pharmaceutical waste regulations. Do not discard the medicine by throwing it in household trash or pouring it into wastewater (e.g., down the sink or toilet).

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

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