Menocare

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Menocare

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Medically reviewed

Rosario Oropesa

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 Menocare

Quick Facts

Property Description
Active Ingredient Progesterone
Form Capsule, Tablet, Vaginal Insert
Pharmacological Class Progestogen; Steroid Hormone
Common Use Hormone deficiency states
Origin Bio-identical (Natural), Micronised

Menocare is a prescription-only medicine classified as a progestogen that acts as a vital steroid hormone component in Hormone Replacement Therapy (HRT). Its core identity is defined by its active ingredient, which is Natural Micronised Progesterone (Progesterone), a substance chemically bio-identical to the hormone naturally produced by the human body. As a single active ingredient product, Menocare is used to supplement and restore appropriate hormone balance in women experiencing significant deficiency states.


What Type of Medicine Is Menocare? Classification and Composition

Menocare is primarily defined by its composition as a natural or bio-identical hormone, distinguishing it from structurally altered synthetic progestins. The active substance, Progesterone, is sourced from plant sterols and then chemically processed to match the human endogenous hormone. This allows it to function as a direct receptor agonist within the body. This bio-identical composition is therapeutically equivalent when compared to endogenous hormone action. Providing this specific hormone is crucial for supporting the reproductive system, regulating cyclical changes, and ensuring the health of the endometrium.


Menocare Forms: Understanding Micronised Progesterone

Menocare is available in multiple dosage forms, typically as a soft gelatin capsule or tablet for oral intake, or as a dedicated vaginal insert, each supporting a specific route of administration. The term micronised indicates that the active progesterone powder has been milled into extremely fine particles, a technical feature designed to enhance the drug's overall bioavailability and absorption into the bloodstream. This specific preparation method is necessary because standard, non-micronized progesterone is poorly absorbed when taken orally, ensuring that effective levels of the hormone are delivered to restore the physiological balance through reliable systemic delivery.

Regulatory References

  1. NIH MedlinePlus

What side effects are possible with Menocare?

Possible Side Effects and Safety Information

The safety profile for Menocare (micronised progesterone) is defined by official regulatory documentation, which outlines adverse reactions classified by frequency and body system. These classifications help distinguish between common, often transient effects and rare, more serious safety events.

Frequency-Classified Adverse Reactions

Adverse reactions are grouped according to the standard frequency categories documented in regulatory labels:

Frequency Classification Examples of Officially Listed Adverse Reactions
Very Common (ge 1/10) Emotional lability, joint pain, abdominal pain, sleep disorder.
Common (ge 1/100 to < 1/10) Headache, drowsiness, breast pain, nausea, fatigue, vertigo, altered menstrual cycles.
Uncommon (ge 1/1,000 to < 1/100) Rash, urticaria, acne, chloasma (dark skin patches).

Certain effects, such as drowsiness and dizziness, are documented to be more common during the first few days of treatment and are often transient.


Serious Adverse Reactions and Restrictions

Regulatory warnings cite rare but clinically significant risks, particularly when progesterone is used in combined Hormone Replacement Therapy (HRT). These include an increased risk of Thromboembolic Events (e.g., Deep Vein Thrombosis, Pulmonary Embolism), Stroke, and Myocardial Infarction. An increased risk of Breast Cancer is also associated with long-term use in combined HRT.

The medicine is subject to safety-related restrictions (contraindications) and should not be used in individuals with severe hepatic dysfunction, a history of active thromboembolic disease, or known or suspected hormone-sensitive malignancies such as breast cancer.

Overdose and Emergency Response

Overdose and when to seek help

Official regulatory information describes the overdose profile for Menocare (micronized progesterone) based on documented clinical effects and mandated emergency actions. The documented manifestations are generally non-severe and relate to effects on the central nervous system (CNS) and the reproductive system.


Documented Overdose Presentations

Domain Official Regulatory Statement
Documented Manifestations Overdosage may lead to clinical signs including somnolence (drowsiness), dizziness, euphoria, and dysmenorrhoea (painful menstruation).
Severity The documented symptoms are classified as non-severe; official regulatory documents do not list life-threatening outcomes in the overdosage section.
Antidote No specific antidote is known or documented for the management of progesterone overdosage.

Required Emergency Actions

Immediate medical attention or consultation with a doctor is required in cases of suspected accidental overdosage or ingestion of excessive quantities of the medicine, as explicitly stated in the official prescribing information.

Treatment of overdosage is defined by the necessary procedural steps: the first action is discontinuation of the medicine. This is followed by the institution of appropriate symptomatic and supportive care. Continuous observation may also be required, reflecting the focus on managing the documented CNS effects until symptoms resolve.

Therapeutic Uses of Menocare

Quick Facts

  • Supports Hormone Replacement Therapy (HRT) regimens.
  • Assists in addressing the absence of menstruation (amenorrhea).
  • Contributes to managing irregular menstrual cycles.
  • Used to support the uterine lining in certain fertility procedures.
  • Utilized for conditions related to reduced levels of progesterone.

Menocare is a prescription medication utilized in therapeutic regimens to address certain gynecological conditions associated with reduced levels of a female hormone.

Hormone Replacement Therapy

It is often incorporated into Hormone Replacement Therapy (HRT) protocols for women who have gone through menopause and still have their uterus. This inclusion is to assist in preventing an increase in the thickness of the uterine lining that may result from estrogen-only therapy. This therapeutic role is crucial for patient health.

Menstrual and Reproductive Support

The medication also serves a role in addressing certain issues related to the menstrual cycle. It can be used to manage the absence of menstrual periods (amenorrhea) in women who are not pregnant, as well as to assist in regulating cycles in instances of abnormal uterine bleeding linked to hormonal changes.

Additionally, Menocare is used for specific forms of support during assisted reproductive procedures, where it contributes to preparing the endometrium (lining of the uterus) for potential implantation. It may be prescribed in contexts related to inadequate progesterone levels to support the maintenance of pregnancy.

Eligibility and Restrictions for Use

Who Can and Cannot Use Menocare?

Menocare (micronised progesterone) eligibility is strictly defined by regulatory documents, distinguishing approved usage populations from those for whom the medicine is absolutely contraindicated.

Contraindicated Populations (Must Not Use)

Menocare is contraindicated for individuals with a known hypersensitivity to progesterone or its components (e.g., peanut oil, soy lecithin in some formulations). Absolute non-eligibility applies to patients with a history of arterial or venous thromboembolic disorders (such as stroke or deep vein thrombosis) and those with known, suspected, or a history of breast cancer.

Furthermore, the medicine is prohibited for patients with severe hepatic impairment or liver disease, and those experiencing undiagnosed abnormal vaginal bleeding. For oral use in Hormone Replacement Therapy (HRT), known or suspected pregnancy is also a contraindication.

Eligibility Constraints

Population Group Regulatory Status
Pediatric Population Safety and effectiveness not established; not indicated for children.
Lactating Women Not recommended as the substance is detectable in breast milk.
Renal Impairment The effects of use have not been studied; caution is required.

Use is allowed for postmenopausal women with an intact uterus (in HRT with estrogen) and for luteal support in Assisted Reproductive Technology (ART) programs, representing its established usage contexts.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Menocare (Progesterone) is subject to officially documented pharmacokinetic and pharmacodynamic interactions that may alter its efficacy or the efficacy of co-administered medicines.

Pharmacokinetic Interactions

The primary documented interaction mechanism involves the liver enzyme CYP3A4. Co-administration with agents known as enzyme inducers (e.g., Rifampicin, Phenytoin, Carbamazepine, Phenobarbital) is stated to increase the metabolism and elimination of Progesterone, which may modify its intended effect. Conversely, co-administration with strong enzyme inhibitors (e.g., Ketoconazole) is documented to inhibit metabolism, potentially increasing Progesterone exposure and plasma concentrations. Certain antibiotics (Ampicillins, Tetracyclines) are also noted in regulatory documents to increase metabolism by affecting the drug's recirculation.

Pharmacodynamic and Administration Constraints

The medicine is officially documented to interfere with blood sugar regulation, which may reduce the effectiveness of antidiabetic agents, necessitating caution. Furthermore, specific constraints apply to administration: the oral capsule is formally contraindicated for individuals with a documented peanut or soya hypersensitivity due to an excipient, and the vaginal formulation is not recommended for co-administration with other vaginal products, as this may alter the intended release and absorption of Progesterone.

Mechanism of Action

How Menocare Works: Mechanism of Action

Menocare's activity is confined to the pharmacodynamic modification of specific mathbfmolecular signaling pathways within target cellular systems. Its mechanism involves mathbfengaging defined targets across multiple distinct mechanistic domains, ultimately initiating an mathbfaltered operational state in affected biological systems.


Engagement with Receptor-Mediated Signaling Pathways

Menocare's primary action is the mathbfselective engagement with cell-surface receptors, which mathbfmodifies the cellular response to endogenous mathbftransmitters and mediators. By mathbfinitiating or suppressing these molecular steps, the compound shapes the signal's propagation, mathbfresulting in the attenuation of heightened signaling sequences.


Influence on Enzyme-Driven Cascades

The compound acts within systems characterized by mathbfenzyme-mediated signal amplification and modification. This interaction mathbfalters feedback regulation within complex biological pathways, thereby mathbfmodifying the systemic consequences of amplified mediator presence and initiating a mathbfsequence of measurable physiological alterations.

Dosage and Administration Information

Menocare (Micronized Progesterone) is administered either orally as a soft capsule or vaginally as an insert, providing two distinct routes for delivery. The choice of route is determined by the specific therapeutic regimen being followed.

For use as part of Hormone Replacement Therapy (HRT), the medication is typically administered in a cyclic schedule. This involves taking a dose of 200 mg once daily for 12 to 14 consecutive days per 28-day cycle, a pattern established to structurally protect the uterine lining. Conversely, for use in reproductive support protocols, the medication follows a continuous schedule and may involve higher daily amounts, with doses ranging up to 600 mg per day, often administered in divided amounts over the course of the day.

Instructions for oral administration specify that the capsule must be swallowed whole and is not to be chewed or crushed. Furthermore, the oral dose is taken at bedtime and generally without food to ensure proper delivery and consistency. Usage rules also involve constraints on certain populations, noting that administration may be restricted or require a dose adjustment in patients with severe hepatic impairment due to the liver's role in hormone processing.

Recent Clinical Evidence

Research evidence / Overview of Studies for Menocare


Evidence for Endometrial Protection in Postmenopausal HRT

Randomized Controlled Trials (RCTs) and large observational studies have examined this medicine's use alongside estrogen in postmenopausal women with an intact uterus. Researchers studied endometrial histology and thickness as the main outcomes. Studies reported that the inclusion of micronised progesterone in the Hormone Replacement Therapy (HRT) regimen was associated with patterns of endometrial transformation, where a non-hyperplastic state was reported in the majority of subjects. However, long-term outcomes extending beyond three to five years are not fully established, and comparative evidence is lacking against structurally different progestogens in large-scale observational settings.


Evidence for Luteal Phase Support in Assisted Reproductive Technology (ART)

Research for this indication primarily consists of RCTs and systematic reviews. These studies focused on measuring Clinical Pregnancy Rate (CPR) and Live Birth Rate (LBR). Findings indicated reported measurements of CPR and LBR in women undergoing ART procedures. Research highlights changes measured in the uterine lining that findings indicated reported patterns related to embryo implantation.

Evidence quality varies across studies due to significant heterogeneity in patient protocols. The current research landscape lacks many placebo-controlled studies, and data are still emerging regarding the optimal dose and duration of support required for all patients.


Evidence for the Management of Secondary Amenorrhea

Short-term clinical studies have been conducted to evaluate this medicine's role in inducing withdrawal bleeding in premenopausal women with an absence of menstruation. Findings reported the occurrence of withdrawal bleeding in the populations studied. The research explores the acute physiological response observed in these short-term studies. Follow-up durations were limited, and the evidence provides limited insight into long-term cycle regulation or recurrence after treatment cessation.


Uncertainty and Research Gaps

The research base exhibits heterogeneity across many fertility trials, which limits the certainty of comparative statements. Findings were mixed regarding how this formulation was associated with outcomes when compared to other progestogens. Data for certain groups remain insufficient, including women with specific comorbidities or those with extremely low endogenous hormone concentrations at baseline.

Key Studies & References

  1. Progesterone Monograph: MedlinePlus Drug Information
  2. ACOG Practice Bulletin No. 195: Abnormal Uterine Bleeding in Reproductive-Aged Women (Guideline for Amenorrhea/AUB)

Frequently Asked Questions (FAQ)

Common questions about Menocare (FAQ)

Q: What is the main difference between Menocare and other common medicines for the same condition?

Official documents describe Menocare as containing micronized progesterone, which is a substance chemically bio-identical to the hormone produced naturally by the human body. This composition is the primary factor that distinguishes it from synthetic progestins, which are structurally altered forms used in some other treatments for related conditions.

Q: Does Menocare help with managing certain symptoms or does it treat the condition itself?

The medicine is authorized for use in treating specific hormone deficiency states. Its function is to supplement or restore the necessary progesterone hormone, which is vital for regulatory processes, such as the structural protection of the uterine lining (endometrium). Therefore, it addresses the underlying hormonal imbalance while influencing the resulting physical symptoms.

Q: Does Menocare cause weight gain?

Weight increase, or weight gain, is listed in the official safety information as an adverse reaction that has been reported in clinical trials involving this medicine. This is part of the established safety profile for the medication.

Q: Is Menocare safe to use if I am also taking thyroid medication?

Official drug information does not generally report a specific, direct interaction between micronized progesterone and common thyroid replacement medications, such as levothyroxine. However, given the complex relationship between sex hormones and thyroid hormones, any use with other hormonal treatments warrants medical oversight.

Q: Why do some people stop taking Menocare after a period of time?

Treatment with this medicine is often prescribed for specific, non-continuous protocols rather than indefinite use. For example, it may be taken for a set number of days per cycle in Hormone Replacement Therapy (HRT) or may be discontinued after confirmation of a successful pregnancy in fertility protocols. The duration is determined by the specific therapeutic goal.

Q: Is Menocare available as a generic medicine?

Yes, regulatory authorities like the FDA have approved and listed generic versions of the oral micronized progesterone capsule. The availability and form of the generic product may vary by region.

Q: Is Menocare used differently depending on the patient's age?

Regulatory warnings and precautions indicate that age is a factor in the risk profile of this medication. Specifically, the use in postmenopausal women over the age of 65 is associated with an increased risk of probable dementia, which subjects this population to special warnings.

Q: Can Menocare affect blood pressure?

Monitoring of blood pressure is often indicated during the course of treatment with this type of hormone therapy. Furthermore, official warnings and precautions also address pre-existing conditions like hypertension and heart disease, indicating potential effects on the cardiovascular system.

Q: How does Menocare interact with grapefruit products?

Grapefruit juice is noted in regulatory documents because it is a strong inhibitor of the liver enzyme CYP3A4, which processes oral progesterone. This action could potentially increase the concentration of the hormone in the bloodstream, which might increase the risk of experiencing certain side effects. The use of these products should be discussed with a healthcare provider.

Q: Can Menocare cause difficulty concentrating?

Reported adverse reactions include symptoms such as confusion, difficulty with speaking or thinking, and extreme dizziness or drowsiness. These specific effects, as listed in the official safety profile, could potentially impact a patient's ability to concentrate.

Q: Do I need to get regular blood tests while taking Menocare?

Official patient monitoring guidelines recommend regular follow-up visits, which commonly include physical checks like blood pressure, breast exams, and Pap smears. A healthcare provider may also determine that some blood tests are necessary to monitor the treatment and the patient's overall health status.

Q: Why is Menocare sometimes referred to by a different brand name?

The active ingredient, micronized progesterone, is marketed by different pharmaceutical companies under various brand names around the world. However, the regulatory approval, including for generic versions, is ultimately based on the use of the same standardized active ingredient.

Q: What should I do if I accidentally take two doses of Menocare?

According to the official overdosage section, taking too much of the medication could lead to symptoms such as nausea, vomiting, dizziness, and extreme sleepiness. In the event of suspected overdose, seeking emergency medical help immediately is necessary.

Q: Does taking Menocare require any specific lifestyle changes?

Regulatory warnings state that patients should not smoke while using the drug. This caution is in place because smoking may further increase the serious risks associated with hormone therapy, such as the formation of blood clots.

Q: Why is this drug classed as a controlled substance in some regions?

The active ingredient, Progesterone, is generally not classified as a controlled substance under the US Controlled Substances Act (CSA), unlike some other steroid hormones. Regulatory documents do not typically indicate that it is subject to the strict scheduling associated with controlled substances.

Q: Are there common signs that Menocare is not working for someone?

The medicine is intended to produce specific clinical results, such as protecting the uterine lining or inducing withdrawal bleeding. Official documents indicate that the persistence of original symptoms or the occurrence of unexpected vaginal bleeding warrants discussion with a healthcare provider.

Q: What kind of specialist typically prescribes Menocare?

The established uses for the drug, which include Hormone Replacement Therapy and Assisted Reproductive Technology protocols, suggest it is typically prescribed by specialists. These healthcare providers are commonly gynecologists, endocrinologists, or fertility doctors.

Q: Can Menocare cause changes in vision?

The official safety information reports that blurred vision and sudden changes in sight have occurred as adverse reactions. A serious adverse reaction cited in regulatory warnings is sudden, partial, or complete loss of vision, which necessitates immediate medical attention.

Q: What is the official purpose of the black box warning on Menocare's label?

The boxed warnings, often referred to as black box warnings, are a regulatory tool used by the FDA to alert prescribers to serious, clinically significant risks. For hormone therapy, these warnings highlight the increased risks of cardiovascular disorders, probable dementia, and breast cancer.

Q: Can Menocare be taken long-term?

The duration of treatment is determined by the medical condition being addressed. Use is subject to continuous medical monitoring, as official warnings indicate that the risks for certain serious adverse reactions, such as breast cancer, are associated with long-term use, typically defined as exceeding three to five years.

Q: Can Menocare interact with common pain relievers or supplements?

Interactions may occur with other medicines that affect the liver enzyme CYP3A4, which is involved in processing the hormone. Official labeling states that a healthcare provider should be informed about all medicines, vitamins, and herbal supplements taken, including common over-the-counter pain relievers.

Q: Is there evidence to suggest Menocare helps with mood or sleep issues?

This drug is not formally indicated to treat existing mood or sleep disorders. However, the regulatory safety profile lists emotional lability (mood changes) and sleep disorders, such as insomnia, as reported adverse reactions that may occur during treatment.

Q: What is the risk of developing a serious side effect with Menocare?

Official warnings state that serious adverse events like blood clots or stroke are reported as rare risks associated with this treatment. The safety documentation also indicates that risk increases are associated with specific patient populations, such as women over age 65 or long-term users.

Q: What specific ingredients are in Menocare besides the main active substance?

The official composition information lists excipients (inactive ingredients) commonly found in the capsules. Excipients often include ingredients such as peanut oil and soy lecithin, which are specifically noted in the contraindications for patients with related allergies.

Q: What is the typical duration of treatment with Menocare?

The duration of treatment is entirely dependent on the therapeutic indication and can vary. For example, it is typically taken for a cyclical duration of 12 to 14 days for endometrial protection, or it may be administered continuously in specific reproductive support protocols.

Q: What is the difference between the various dosage strengths of Menocare?

Micronized progesterone is available in different standardized strengths, such as 100 mg and 200 mg oral capsules. The strength that is prescribed by a physician is determined by the specific clinical protocol being followed, such as Hormone Replacement Therapy (HRT) or a reproductive support regimen.

How should Menocare be stored and disposed of?

How to Store and Dispose of Menocare

Official regulatory labeling for micronized progesterone (Menocare-type medicines) specifies strict conditions to maintain product stability and ensure public safety.


Storage Requirements

Condition Regulatory Requirement
Temperature Store at Controlled Room Temperature, typically 20 C to 25 C (68 F to 77 F). Do not freeze and keep away from excess heat and moisture.
Protection Store in the original container, tightly closed, and protected from light. Do not use the medicine after the expiry date.
Child Safety Mandatory to keep the medicine out of the sight and reach of children and to lock safety caps.

Disposal Instructions

Unused or expired product must not be thrown away via household waste or wastewater. Disposal must be carried out in accordance with local regulations, often requiring consultation with a pharmacist or utilization of an authorized drug take-back program.

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

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