Cliane

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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 Cliane

Understanding Cliane

Cliane is a continuous combined hormone replacement therapy (HRT). It is formulated as a tablet containing two types of active substances: an estrogen (estradiol hemihydrate) and a progestogen (norethisterone acetate).

Composition and Mechanism

The two primary components of Cliane function to supplement the hormones that naturally decline during the menopausal transition:

  • Estradiol: This is a naturally occurring form of the female sex hormone estrogen. During menopause, the ovaries gradually produce less estrogen, which can lead to various physical symptoms. Replacing this estrogen helps manage these changes.
  • Norethisterone Acetate: This is a synthetic form of the hormone progesterone. In women who still have an intact uterus, taking estrogen alone can cause the lining of the womb (the endometrium) to thicken excessively. The addition of a progestogen helps protect the uterine lining by counteracting the effects of estrogen on the endometrium.

The Continuous Combined Regimen

Cliane is classified as a "continuous combined" therapy. This means that both the estrogen and the progestogen are taken every day without a break. This specific regimen is generally intended for women who have passed menopause and have not experienced a natural period for at least one year.

Unlike cyclic HRT, which involves taking different hormones at different times of the month to mimic a menstrual cycle, a continuous combined regimen is designed to provide a steady level of hormones. This approach often results in the eventual cessation of monthly bleed-like withdrawal bleeding, although some irregular spotting may occur during the initial months of use.

Regulatory References

  1. NIH MedlinePlus on Hormone Therapy

What side effects are possible with Cliane?

Official Safety Profile and Adverse Reactions

The safety profile of combined Estradiol and Norethisterone preparations, as documented by government regulatory agencies, details potential adverse reactions classified by frequency and body system. This information is non-instructional and strictly based on official regulatory labeling.


Frequency-Classified Adverse Reactions

Adverse effects are categorized based on their official occurrence rates in clinical trials:

  • Very Common (may affect more than 1 in 10 women): Headache, Breast tenderness or pain, and Vaginal bleeding (including spotting).
  • Common (may affect up to 1 in 10 women): Nausea, Abdominal pain (bloating/cramps), Fluid retention, and Weight changes.

These effects, particularly bleeding and breast discomfort, are often noted as being more frequent during the first few months of treatment.


Serious Adverse Reactions and Safety Constraints

Official regulatory documents mandate warnings regarding rare but clinically significant risks, which typically establish the medication's absolute limitations (Contraindications):

  • Cardiovascular and Thromboembolic Events: Increased risk of Venous Thromboembolism (VTE, including DVT and pulmonary embolism), Stroke, and Myocardial Infarction. The risk of VTE is cited as being more likely in the first year of HRT use.
  • Malignant Neoplasms: Increased risk of Breast Cancer and Endometrial Cancer (where applicable, emphasizing the role of the progestogen component).
  • Contraindications: The medicine is restricted and must not be used in individuals with a history of VTE, active liver disease, undiagnosed genital bleeding, or known estrogen-dependent tumours.

Population Context

Safety notes specify that treatment experience is limited in women aged 65 or older, and the medication is contraindicated during known or suspected pregnancy or lactation.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory documentation concerning an overdose of Cliane (Estradiol/Norethisterone) is specific to documented physiological responses and regulator-mandated emergency actions.

Documented Clinical Manifestations

Overdose manifestations are generally not anticipated to be severe, with serious symptoms being classified as very unlikely according to official guidance. Documented clinical signs may affect the gastrointestinal system, including nausea and vomiting. Gynecological manifestations may include breast enlargement or tenderness, and in some cases, delayed vaginal bleeding that may occur several days after the event. Other reported clinical presentations include headache, fluid retention, drowsiness, emotional changes, and discolored urine.

Mandated Emergency Response and Management

It is mandated in the official prescribing information that individuals seek emergency medical attention or medical help right away upon any suspicion of over-ingestion, including contacting local emergency services. Management of an overdose is defined as symptomatic and supportive, as no specific antidote is known for this medication. Depending on the event, procedures such as gastric lavage may be considered if a large overdosage is reported within four hours of ingestion. Continuous monitoring of vital signs and laboratory tests may also be required to manage the situation.

Therapeutic Uses of Cliane

What Cliane Treats: Main Uses and Benefits

The medication is commonly used in contexts involving symptoms related to estrogen deficiency, which may be experienced during the post-menopausal period. Cliane provides supportive relief by addressing multiple symptomatic domains that interfere with daily functioning, and may help patients cope more steadily with symptom fluctuations. This class of treatment is relevant to approved uses for providing relief from common menopausal symptoms.

Cliane is applied across domains where additional symptomatic support is needed. Its primary therapeutic focus is relevant for easing symptoms of vasomotor instability, such as hot flashes and night sweats, along with providing support for urogenital discomfort like vaginal dryness.

“This approach helps address symptom clusters that may become intense or disruptive, contributing to improved comfort during symptomatic periods.”


Relieving Key Symptom Clusters

This treatment helps address symptom clusters that interfere with daily comfort. It assists with managing frequent, bothersome episodes of hot flashes and associated night sweats, contributing to improved physical comfort and may support less disruptive sleep. Cliane also helps ease manifestations linked to organ-specific functional stress, specifically vaginal dryness or irritation resulting from urogenital changes. By easing symptoms of physical discomfort, the medication may support general well-being and assists patients in coping with difficult episodes.

Quick Fact: Relief for Vasomotor Symptoms Cliane is considered relevant in clinical settings for supporting patients who experience acute or disruptive hot flashes and night sweats.

Regulatory References

  1. U.S. Department of Health & Human Services on Menopausal Hormone Therapies

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Cliane — official regulatory information

Eligibility Scope

Classification Rule Summary (Official Labeling)
Populations for whom use is allowed Postmenopausal women for whom Hormone Replacement Therapy (HRT) is indicated.
Populations for whom use is contraindicated Women with a current or history of breast cancer, estrogen-dependent tumours, undiagnosed genital bleeding, untreated endometrial hyperplasia, or active/previous venous/arterial thromboembolic disease (e.g., blood clots, stroke, heart attack). Contraindication also applies to women with acute liver disease, thrombophilic disorders, or Porphyria.
Age/Life Stage Eligibility Use is contraindicated during both pregnancy and lactation. The medicine is not to be used in children; experience is limited in women over 65 years.
Condition-specific eligibility Close supervision is required for conditions such as severe renal impairment, diabetes mellitus, and for those with uterine fibroids or severe hypertriglyceridaemia.

Eligibility Classifications (High-Level)

  • Eligibility severity classification: Defined by regulators as Contraindicated (absolute exclusion) and Use with Caution/Supervision (conditional use).
  • Eligibility-context constraints: Primarily constrained by the risk of hormone-sensitive cancers and the risk of thromboembolism.

Resulting Eligibility Structure

Official regulatory documents strictly limit Cliane's use to postmenopausal women, with absolute exclusion for those who present high risks related to hormone-sensitive diseases or clotting disorders. Conditional eligibility is governed by the need for close medical supervision for specific chronic conditions like renal impairment or diabetes. The regulatory status is clearly defined for life stages, prohibiting use during pregnancy and lactation, and noting that use in children is not established.

What should I know about interactions with other medicines?

The interaction profile for Cliane (Estradiol and Norethisterone) is chiefly defined by its pharmacokinetic relationship with the CYP3A4 enzyme system, which mediates the metabolism of both active hormones. This susceptibility results in changes to hormone exposure when co-administered with certain other medicinal products.

Specific Interacting Agents

Category Representative Examples Interaction Outcome
Exposure Reduction Rifampin, Phenobarbital, St. John's Wort May reduce plasma concentrations of the hormones.
Exposure Increase Ketoconazole, Clarithromycin, Grapefruit Juice May increase plasma concentrations of the hormones.

Interaction Restrictions and Classifications

Co-administration with certain Hepatitis C Virus (HCV) combination regimens is formally contraindicated. This prohibition applies specifically to products containing Dasabuvir, Ombitasvir, Paritaprevir, and Ritonavir, as their combined use carries a documented risk of significant Alanine Aminotransferase (ALT) elevations. Agents that function as strong CYP3A4 inducers (such as certain anti-infectives and anticonvulsants) are associated with reduced hormone levels, potentially resulting in a diminished therapeutic effect. Conversely, strong CYP3A4 inhibitors (such as certain antifungals and antibiotics) are associated with increased hormone levels. The official regulatory documents do not specify mandatory dose separation timing or population-specific interaction constraints.

Connection to the overall interaction profile

The profile is structured around exposure modification, with official documents citing metabolic inducers that lower hormone levels and metabolic inhibitors that raise them. This metabolic sensitivity underpins the explicit contraindication against specific Hepatitis C virus combination regimens. The structure is entirely derived from documented exposure alterations and formal prohibitions found in government-approved labeling.

Mechanism of Action

Modulating the Hypothalamic Feedback Loop

Cliane functions as a Selective Estrogen Receptor Modulator (SERM). Its mechanism initiates centrally by acting as an antagonist to the Estrogen Receptors (ERs) primarily located within the hypothalamus and the pituitary gland. By binding to these receptors, Cliane prevents endogenous estrogen from exerting its typical negative feedback signal on the central neuroendocrine system. This inhibition of negative feedback subsequently leads to an increased pulsatile release of Gonadotropin-Releasing Hormone (GnRH).


Amplifying Gonadotropin Signaling

Increased GnRH secretion stimulates the anterior pituitary to heighten the output and circulating levels of the pituitary gonadotropins: Follicle-Stimulating Hormone (FSH) and Luteinizing Hormone (LH). This amplified endocrine signal transmits the stimulatory command to the ovaries. This action successfully counters the baseline inhibitory signaling prevalent at the pituitary and hypothalamic receptor sites.


Inducing Follicular Development

Upon reaching the ovaries, the elevated FSH and LH levels bind to receptors on the follicular cells, accelerating folliculogenesis and the maturation of ovarian follicles. The ensuing peak in LH triggers the rupture of the mature follicle, leading to the physiological event of ovulation.

Dosage and Administration Information

How Cliane is Used: Official Administration Guidelines

Cliane (Estradiol and Norethisterone acetate) is typically used according to a continuous combined regimen. This usage pattern dictates that the medicine is administered orally as a single tablet once daily without interruption, ensuring a consistent systemic delivery of both estrogen and progestin.


Dosing and Administration Protocol

The route of administration is oral, consistent with the film-coated tablet formulation. The standard dosing involves taking one tablet, such as the Estradiol 1 mg / Norethisterone acetate 0.5 mg strength, preferably at the same time every day to maintain steady hormone levels. Intake may occur without regard to meals.

When initiating therapy, the regimen may begin on any convenient day for women not currently using HRT. However, when switching from a sequential HRT product, the continuous combined regimen is typically started after the scheduled withdrawal bleeding has ceased.


Procedural Constraints and Duration

For a missed dose, the tablet is taken as soon as possible, but only if it is within twelve hours of the usual time. If more than twelve hours have elapsed, the missed tablet is discarded and the regular dosing schedule is resumed the following day. Missing a dose in this manner may increase the likelihood of breakthrough bleeding.

The overall duration of therapy is not fixed; instead, it involves using the lowest effective dose for the shortest duration consistent with individual needs. Consequently, continuation of the regimen requires periodic re-evaluation by a health professional. Additionally, clinical experience with this specific product in women older than 65 years of age is limited.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Cliane

This section provides an overview of the official research structure and findings concerning sequential combined hormone replacement therapy (HRT), focusing on how the medication was studied and what patterns were observed in clinical trials, without offering personal advice or specific treatment instructions.


Evidence for Managing Moderate to Severe Hot Flashes and Night Sweats

The research base includes numerous Randomized Controlled Trials (RCTs) and Systematic Reviews that were used in research exploring how symptoms change over time for women experiencing bothersome hot flashes and night sweats. These studies evaluated treatment against a placebo in postmenopausal women with symptoms classified as moderate to severe. Researchers monitored outcomes related to physical discomfort by tracking changes in the frequency and intensity of daily hot flashes and night sweats using patient diaries and standardized symptom scales.

Studies describe patterns observed in the studies where the active treatment was associated with observed differences in symptom frequency and intensity compared to placebo. What remains uncertain is the long-term data focusing solely on the durability of symptom changes beyond several years of use with this specific sequential formulation; research is ongoing.


Evidence on Endometrial Protection and Bleeding Patterns

This part reviews research that was studied for the inclusion of the progestogen component, Norethisterone, which is essential for women with an intact uterus. Large-scale RCTs and Observational Studies explored the relationship between progestogen use and the uterine lining. The primary concern studied was the incidence of changes to the uterine lining, such as endometrial hyperplasia (abnormal thickening).

Findings describe patterns observed in the studies where the addition of a progestogen appeared to be associated with a lower incidence of endometrial hyperplasia compared to groups receiving estrogen alone. The sequential nature of Cliane was studied for its relationship to bleeding patterns, with some studies reporting observed instances of scheduled withdrawal bleeding in populations during the progestogen phase.


Long-Term Evidence and Research Gaps

Research examined the longer-term application of combined HRT to track outcomes beyond acute symptom relief, particularly in relation to bone health. Studies that observed responses over defined time intervals to assess changes in Bone Mineral Density (BMD) at the hip and spine. Research reports that women receiving active treatment were observed to have different average BMD values over several years compared to placebo groups.

Despite the volume of research, the existing evidence is limited in defining the outcomes for women who initiate HRT many years after menopause. Furthermore, comparative evidence is limited for this specific HRT type when compared to non-hormonal treatments solely for the prevention of bone loss. Long-term effects are not fully established, and research is ongoing to clarify outcomes beyond the typical 5-year treatment window.

Key Studies & References

  1. Recommendations for the clinical care of women at the time of menopause (The North American Menopause Society - NAMS Position Statement)

Frequently Asked Questions (FAQ)

Common questions about Cliane (FAQ)

Q: What are the approved medical uses for Cliane?

A: According to the official product information, the approved indications for Cliane include the management of moderate to severe vasomotor symptoms, which are commonly known as hot flashes and night sweats, associated with menopause. It is also approved for the prevention of postmenopausal osteoporosis, a condition that causes bone thinning.


Q: If I stop taking Cliane, how long does the drug stay in my system?

A: The time it may take for the body to eliminate the drug is related to its half-life, which is the time required for half of the dose to be removed. The elimination half-life for the estradiol component is approximately 13 to 20 hours, and the norethisterone component has an approximate half-life of 7.6 hours.


Q: Is it considered normal to not notice any immediate change after starting Cliane?

A: It is generally expected that immediate changes may not be noticeable after starting Cliane. Studies and official information indicate that the expected clinical effect of the medication is generally assessed over several weeks or even months of continuous use.


Q: What is the longest period of time people have typically been prescribed Cliane in studies?

A: Regulatory documents emphasize the principle of using the lowest effective dose for the shortest duration necessary to manage symptoms. While continuation of treatment is subject to periodic re-evaluation by a health professional, clinical studies often cite long-term data for observation periods of up to five years.


Q: What is the official warning regarding suddenly stopping Cliane treatment?

A: Official guidance on a missed dose indicates that if the tablet is more than 12 hours late, it should be discarded to resume the regular schedule, as this may increase the likelihood of breakthrough bleeding. Abruptly stopping the treatment entirely may lead to a return of the menopausal symptoms the medicine was intended to manage.


Q: What is the official information regarding Cliane and weight gain or appetite changes?

A: Official labeling indicates that weight changes are reported as a common adverse reaction, meaning this effect may occur in up to 1 in 10 women. However, changes in appetite are not listed among the most commonly reported side effects for this medication.


Q: Does Cliane have an impact on mental health, mood, or anxiety levels?

A: According to the official product information, changes in mood, including depression, and anxiety are recognized as potential adverse reactions associated with this class of medication. Further details can be found in the full adverse reactions section of the drug labeling.


Q: Is fatigue or drowsiness a known or common side effect of Cliane?

A: Studies and official information indicate that fatigue has been reported as an adverse reaction in clinical studies for this class of medication. However, drowsiness is generally not listed as a frequent side effect in the official regulatory documents.


Q: Can Cliane affect a person's ability to drive or operate machinery?

A: Official labeling advises caution regarding driving or operating machinery. If side effects such as dizziness or vision changes are experienced, caution is generally recommended. The specific effect of the drug on these abilities may not have been fully studied.


Q: What is the potential for allergic reactions to Cliane, and what are the signs?

A: Allergic reactions and hypersensitivity to the components of the medicine are documented in the regulatory profile. Signs of a serious reaction may include the development of hives, swelling of the face, lips, tongue, or throat, or difficulty breathing.


Q: Does Cliane carry a Boxed Warning from the FDA or similar regulatory body?

A: Yes, the FDA-approved labeling for this class of medication carries a Boxed Warning. This mandatory safety notice highlights the increased risks of cardiovascular disorders (like blood clots, stroke, and heart attack), probable dementia in women over 65, breast cancer, and endometrial cancer.


Q: Is it true that Cliane can cause changes in vision?

A: Yes, official warnings note that vision changes, blurred vision, or sudden partial or complete loss of vision are listed as signs of a serious complication, such as a blood clot in the eye. The regulatory documents state that these changes require immediate medical attention.


Q: How often should monitoring tests, like blood work, be done while taking Cliane?

A: Regulatory guidelines recommend that patients receive periodic medical evaluations and examinations while using this medication. This monitoring, which may include blood tests and physical exams, is generally recommended on a periodic basis, such as every 6 to 12 months.


Q: What are the listed signs of overdose for Cliane?

A: According to the official regulatory documents, the signs of overdose may include nausea, vomiting, and/or withdrawal bleeding. If an overdose is suspected, official guidance states that treatment is generally supportive.


Q: Does Cliane interact with alcohol consumption?

A: Official regulatory guidance indicates that caution is appropriate regarding alcohol consumption while using this medicine. The use of alcohol or tobacco with this medication may potentially increase the risk of certain side effects.


Q: Is it safe to take Cliane with common over-the-counter pain relievers?

A: The product's detailed interaction profile primarily focuses on prescription medicines that affect the CYP3A4 enzyme system in the liver. Since regulatory documents do not specify interactions with all common over-the-counter pain relievers, it is generally recommended to consult a healthcare provider about specific products.


Q: Is there a contraindication for taking Cliane with antidepressant medications?

A: There is not a universal contraindication against taking this medication with all antidepressants. However, caution and monitoring may be necessary when co-administering with certain types, such as Tricyclic Antidepressants (TCAs), due to potentially increased cardiovascular risks.


Q: How does the generic version of Cliane compare to the brand name, according to regulatory standards?

A: According to regulatory bodies, any generic version approved for use is certified as bioequivalent to the brand-name product. This means the generic contains the exact same active ingredients, is identical in strength, and has the same expected clinical effect.


Q: Where can a patient find the full prescribing information or official drug label for Cliane?

A: The complete patient information is provided to you as the Patient Information Leaflet (PIL) or Medication Guide with your prescription. It is also often available online via government drug registries, such as the FDA's DailyMed database or the European Medicines Agency's SmPC documents.


Q: What is the official statement on the effectiveness rate of Cliane in key clinical studies?

A: Clinical studies evaluated the medicine by tracking observed differences in the frequency and severity of hot flashes and night sweats compared to groups receiving placebo. A single, all-encompassing percentage rate for overall effectiveness is generally not provided in regulatory documents.

How should Cliane be stored and disposed of?

The official regulatory guidelines for Cliane (estradiol/norethisterone) strictly define the required storage and disposal procedures to maintain the product's stability.

Storage Conditions

Storage Requirement Official Regulatory Statement
Temperature Store in a closed container at room temperature, away from heat.
Protection Keep the tablets in the original container/outer carton to protect them from direct light and moisture [2.2].
Prohibited Keep from freezing [1.2].

Handling and Disposal

The medicine must be stored out of the sight and reach of children to prevent accidental ingestion [1.2].

Disposal instructions mandate that any outdated or unused medicine be disposed of in accordance with local requirements [3.3]. The medicine should not be kept once it is no longer needed. Patients should consult their healthcare professional for the proper local method for discarding unused pharmaceuticals [1.2].

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

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