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Menotrophin

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Menotrophin

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Treatment option:

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.

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Overview of Menotrophin

Menotrophin is the international non-proprietary name (INN) for a powerful prescription fertility medication also known as Human Menopausal Gonadotropin (hMG).

Property Description
Active ingredients Follicle-Stimulating Hormone (FSH) + Luteinizing Hormone (LH) activity
Pharmacological class Gonadotropin (a type of hormonal drug)
Dosage Form Lyophilized powder for injection
Typical Use Ovarian stimulation for Assisted Reproductive Technology (ART) procedures
Origin Derived from the urine of postmenopausal women

Menotrophin is part of the Gonadotropin pharmacological class, which consists of hormonal drugs that mimic the function of natural hormones produced by the pituitary gland. It is historically derived from the urine of postmenopausal women, which contains elevated levels of these essential reproductive hormones.

This medication is clinically recognized for its unique composition: a preparation containing a balanced mixture of both Follicle-Stimulating Hormone (FSH) activity and Luteinizing Hormone (LH) activity. A common formulation contains approximately equal amounts of FSH and LH activity, such as 75 International Units (IU) of each per vial. This balanced ratio is crucial for promoting healthy egg development.

Menotropins are widely used to cause ovulation in women and to stimulate the development of multiple eggs for use in procedures like in vitro fertilization (IVF). Its primary role is to medically encourage the ovaries to prepare eggs, a necessary step for controlled ovarian stimulation in fertility treatments. Because of its use in complex procedures, menotrophin is always a prescription-only (Rx) medicine administered under the close supervision of a fertility specialist.

Regulatory References

  1. Menotropins Injection (MedlinePlus Drug Information)
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What side effects are possible with Menotrophin?

Possible Side Effects and Safety Information

The safety profile for Menotrophin (Human Menopausal Gonadotropin) is defined by official regulatory documents that classify potential adverse reactions by frequency and the organ system affected. The most frequently observed adverse reactions are generally localized or related to mild systemic discomforts.


Adverse Reactions by Frequency and System

Adverse reactions are classified according to regulatory standards, with the most common effects related to the reproductive and gastrointestinal systems, as well as the injection site:

  • Very Common (Affecting ge 1 in 10 patients): Injection site reactions (pain, inflammation, swelling) and headache.
  • Common (Affecting ge 1 in 100 to <1 in 10 patients): Abdominal pain, nausea, mild to moderate Ovarian Hyperstimulation Syndrome (OHSS), pelvic pain, and breast tenderness.

Serious Safety Considerations

The official labeling highlights specific serious adverse reactions that require close monitoring during the treatment period:

  • Severe Ovarian Hyperstimulation Syndrome (OHSS): This is a rare, but potentially life-threatening complication characterized by severe ovarian enlargement, abdominal fluid accumulation, and potential blood circulation issues. The risk is monitored closely and is typically observed during and shortly after the treatment cycle.
  • Thromboembolism: The occurrence of blood clots in veins or arteries (e.g., pulmonary embolism, stroke) has been reported, sometimes in association with, but also separate from, Severe OHSS.

Safety Restrictions and Contraindications

Menotrophin is contraindicated in patients with specific pre-existing conditions as defined by regulatory authorities. These include known hypersensitivity to menotropins, primary ovarian failure, the presence of certain hormone-dependent tumors (e.g., pituitary, hypothalamic, or reproductive tract tumors), or unexplained abnormal uterine bleeding or ovarian enlargement.

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Overdose and Emergency Response

Overdose and When to Seek Help

The most serious documented consequence of Menotrophin (menotropins) overdosage is the development of Ovarian Hyperstimulation Syndrome (OHSS). The risk is elevated if the Menotrophin course is followed by the final human chorionic gonadotropin (hCG) injection.

Documented Overdose Manifestations

Severity Symptoms and Signs
Mild to Moderate Severe pelvic pain, nausea, vomiting, sudden weight gain, and diarrhea.
Severe (Life-Threatening) Acute respiratory distress (trouble breathing), oliguria (decreased or no urination), pleural effusion, thromboembolic events (blood clots), and severe abdominal distension from ascites.

Emergency Actions and Urgent Medical Attention

If excessive ovarian response is detected prior to the final injection, Menotrophin treatment must be stopped and the hCG injection must be withheld to prevent progression to severe OHSS. Patients are required to seek medical help immediately if they experience any of the severe manifestations listed above, particularly trouble breathing or sudden, excessive weight gain.

Management and Antidote

There is no specific antidote for Menotrophin overdose. Treatment for the resulting OHSS is symptomatic and supportive, focusing on careful monitoring of fluid and electrolyte balance and providing supportive care to manage associated complications.

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Therapeutic Uses of Menotrophin

Main Uses of Menotrophin

Menotrophin, also known as human menopausal gonadotrophin (hMG), is a hormonal medication primarily used to address certain types of fertility challenges in both women and men. It contains a combination of two naturally occurring hormones: follicle-stimulating hormone (FSH) and luteinising hormone (LH).

Female Infertility and Ovulation Induction

The primary application of menotrophin is for women who do not ovulate naturally or who have irregular menstrual cycles. By providing a controlled dose of FSH and LH, the medication stimulates the ovaries to develop and mature ovarian follicles (the sacs containing eggs).

  • Anovulation: It is used for women who are not producing eggs due to hormonal imbalances, including those with polycystic ovary syndrome (PCOS) who have not responded to first-line treatments.
  • Assisted Reproductive Technology (ART): In procedures such as in vitro fertilisation (IVF), menotrophin is used for controlled ovarian hyperstimulation. This process encourages the development of multiple follicles simultaneously, increasing the number of eggs available for collection and subsequent fertilisation.

Male Infertility and Spermatogenesis

In men, menotrophin is used to treat specific types of hormonal deficiencies that affect reproductive health. It is typically used when infertility is caused by hypogonadotropic hypogonadism, a condition where the pituitary gland does not produce enough gonadotrophins.

  • Sperm Production: When administered alongside other hormones, menotrophin stimulates the testes to produce sperm (spermatogenesis), thereby improving the potential for natural or assisted conception.

Benefits of Treatment

The fundamental benefit of menotrophin therapy is the restoration or enhancement of reproductive function by mimicking the body’s natural hormonal signals.

  • Follicular Development: It provides the necessary hormonal environment for follicles to reach the size and maturity required for successful release (ovulation).
  • Targeted Hormonal Support: Unlike medications that only contain FSH, the inclusion of LH in menotrophin provides a dual-action approach that may be beneficial for individuals with specific hormonal profiles.
  • Increased Conception Opportunities: By enabling ovulation in women and sperm production in men, the medication creates the biological conditions necessary for pregnancy to occur.

Regulatory References

  1. Australian Public Assessment Report for Gonadotrophin – human menopausal
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Eligibility and Restrictions for Use

Menotrophin eligibility is strictly determined by official regulatory documents, outlining populations who must not use the medicine (contraindications) and those for whom use is restricted or not established.

Contraindicated Populations

Use is prohibited for individuals with:

  • Hypersensitivity to menotropins or excipients.
  • Specific hormone-dependent tumors of the reproductive tract, hypothalamus, or pituitary gland.
  • Primary ovarian failure (indicated by high Follicle-Stimulating Hormone levels).
  • Uncontrolled non-gonadal endocrine conditions (e.g., adrenal or thyroid dysfunction).
  • Pregnancy or lactation status.
  • Ovarian cysts or enlargement of undetermined cause (not PCOS) or abnormal uterine bleeding of undetermined origin.
  • Structural abnormalities (e.g., uterine fibroids, malformations) that are incompatible with pregnancy.

Restricted and Non-Established Use

  • Conditional Use: Women with tubal pathology should only receive Menotrophin if they are enrolled in an In Vitro Fertilization (IVF) program. Additionally, if significant ovarian enlargement occurs during treatment, subsequent Human Chorionic Gonadotropin (hCG) must be withheld.
  • Use Not Established: Safety and efficacy have not been established in pediatric or geriatric populations, nor in patients with renal or hepatic insufficiency.
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What should I know about interactions with other medicines?

The official regulatory profile for Menotrophin interactions is defined by administration constraints within fertility treatment protocols. The prescribing information explicitly states that dedicated human drug-drug interaction studies have not been conducted. This means formal metabolic (e.g., CYP-mediated) or drug-transporter interactions are not established in the regulatory documents, and there are no documented interactions with food, alcohol, or herbal products.

The primary documented interactions are pharmacodynamic, resulting from co-administration with other fertility agents. Use with Clomiphene Citrate produces an additive pharmacodynamic effect that increases the risk of Ovarian Hyperstimulation Syndrome (OHSS). A major administration restriction involves Human Chorionic Gonadotropin (hCG): this medicine must be withheld if monitoring indicates abnormal ovarian enlargement following menotrophin therapy, a critical rule to mitigate the risk of OHSS.

Menotrophin may be co-administered with other gonadotropins, such as Urofollitropin. However, this combination is subject to a strict regulatory limit: the total combined daily dose must not exceed 450 International Units (IU). A final caution notes that the safety, efficacy, and pharmacokinetics of menotrophin have not been established in populations with renal or hepatic insufficiency.

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Mechanism of Action

Menotrophin is a mixture of gonadotropin analogues, specifically comprising follicle-stimulating hormone (FSH) and luteinizing hormone (LH) activity. It acts primarily by targeting and stimulating ovarian cells to initiate the final phases of follicular maturation.

The FSH component binds to its cognate receptors on granulosa cells, activating intracellular signaling pathways. This binding induces the proliferation of these cells and promotes the aromatization of androgens into estrogens (steroidogenesis). Concurrently, the LH component targets the theca cells, where it facilitates the conversion of cholesterol into androgen substrates. This provision of androgen is essential for the FSH-driven estrogen synthesis, ensuring the complete gonadal steroidogenic pathway is supported.

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Dosage and Administration Information

Official Administration of Menotrophin

Menotrophin is supplied as a lyophilized powder in a vial, necessitating reconstitution with a solvent prior to administration. The resulting solution must be visually inspected to ensure it is clear and free of particulate matter. The drug is intended for subcutaneous (SC) or intramuscular (IM) injection. The initial injection must be performed under the direct supervision of a specialist.

Dosing and Cycle Structure

Administration is carried out as a once-daily injection over a cyclic treatment course, which typically lasts between 7 and 20 days. Dosing recommendations vary by clinical context. For Assisted Reproductive Technology (ART) cycles, a common starting dose is 225 International Units (IU) daily. For simpler anovulation induction, an initial daily dose of 75 IU to 150 IU may be prescribed.

Dose adjustments are strictly regulated and should be made in small increments, generally not exceeding 150 IU at a time. Adjustments are not made more frequently than every two to seven days, and the maximum daily dose for women should not exceed 450 IU. The treatment phase concludes with a separate injection of human Chorionic Gonadotropin (hCG), administered one day following the final menotrophin dose. There are no specific dose adjustment protocols provided for patients with hepatic or renal impairment.

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Recent Clinical Evidence

Research Evidence / Overview of Studies for Menotrophin


Evidence for use in Controlled Ovarian Stimulation during Assisted Reproductive Technology (ART)

Menotrophin was evaluated in research exploring its use to support the development of multiple egg-containing structures (follicles) in women participating in an assisted reproductive technology procedure, such as in vitro fertilization (IVF). Available research for this indication primarily includes randomized controlled trials and observational settings. Studies examined various protocols and focused on outcomes related to egg retrieval and sometimes included longer-term outcomes like pregnancy rates. Research describes that when menotrophin was studied for controlled ovarian stimulation, findings indicate patterns related to follicular development. Outcomes reflecting daily functioning were not the primary focus of many of these trials. Certainty remains low regarding how these findings translate directly to a live birth for any specific individual, and follow-up durations were limited in many initial trials.


Evidence for use in Ovulation Induction

Menotrophin was studied for use in women who experience conditions characterized by fluctuating or episodic manifestations, such as anovulation (the lack of regular ovulation). The research primarily explored short-term symptom changes, focusing on how the intervention affected follicular growth and ovulation. Research describes that during the study periods, menotrophin was associated with patterns of follicular maturation, and the release of an egg was observed in some of the studied populations. Sample sizes were modest in some of the earlier studies. Data for certain groups remain insufficient, and comparative evidence is lacking in some areas, making it challenging to fully contextualize the findings against all available alternatives.


Long-term Studies and Follow-up

Studies conducted on menotrophin have largely focused on the outcomes that happen during or immediately following treatment cycles. Therefore, there is limited information for long-term outcomes that occur many months or years after the intervention has concluded. Research monitored patients over defined time intervals, but follow-up durations were limited in many key trials. Long-term effects are not fully established regarding extended outcomes or the sustained physical changes, especially for individuals who undergo multiple courses of treatment.

Key Studies & References

  1. Fertility problems: assessment and treatment - NICE Guideline [NG196]
  2. Long-term safety of ovarian stimulation: a systematic review of the literature
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Frequently Asked Questions (FAQ)

Common questions about Menotrophin (FAQ)


Q: What is the main difference between Menotrophin and other common fertility medications?

Regulatory information indicates that Menotrophin is unique because it provides activity from both Follicle-Stimulating Hormone (FSH) and Luteinizing Hormone (LH). This combination distinguishes it from other fertility preparations which may contain only purified FSH activity. The balanced presence of both hormonal activities is described as promoting follicular development.


Q: How quickly does Menotrophin start to affect the body or hormone levels?

Official information does not specify a precise time to initial therapeutic effect, but Menotrophin is administered over an entire treatment cycle, typically lasting between 7 and 20 days. Hormone levels, such as FSH and LH activity, are measurable in the bloodstream following administration.


Q: Can Menotrophin be used by men, or is it only for female fertility issues?

While the drug is primarily approved for use in women undergoing fertility treatments, studies and available medical literature indicate that menotropins have been used to help stimulate sperm production in hypogonadal men. Its potential use in men is typically determined by a healthcare provider based on the individual's specific needs.


Q: Does Menotrophin increase the chance of having a multiple pregnancy (twins, triplets)?

Yes. Official regulatory documents state that treatment with Menotrophin can increase the chance of a multiple gestation (e.g., twins, triplets, or more). This potential risk is associated with the drug's mechanism, which involves stimulating the development of multiple egg-containing structures.


Q: How does Menotrophin affect the risk of an ectopic pregnancy?

For individuals undergoing assisted reproductive technologies (ART), official product information indicates that the risk of ectopic pregnancy (where the embryo implants outside the uterus) may be increased. This risk is notably higher in patients who have a history of fallopian tube disease.


Q: Is there a link between using Menotrophin and the long-term risk of ovarian cancer?

Official labeling reports that some women who have undergone fertility treatments have developed ovarian tumors. However, regulatory sources emphasize that it is not yet established if the use of hormonal agents like Menotrophin is the direct cause of these problems.


Q: Do studies show Menotrophin is effective for women with Polycystic Ovary Syndrome (PCOS)?

Official information indicates that ovarian enlargement or cysts not due to Polycystic Ovary Syndrome (PCOS) are a contraindication for use, suggesting its application in managing anovulation for this population is recognized. The drug is officially used to promote follicular development in women who do not ovulate regularly.


Q: Is Menotrophin known to cause mood swings, anxiety, or emotional changes?

Official adverse reaction data has included reports of general mood changes in some cohorts of patients using the drug. However, severe emotional changes like anxiety or major mood swings are not consistently listed among the most commonly reported side effects.


Q: What kind of monitoring (like blood tests or scans) is typically needed during Menotrophin treatment?

According to official documentation, treatment progress is usually monitored frequently. This involves using ultrasound scans to check on follicular growth and blood tests to measure hormone levels, such as serum estradiol (estrogen) levels.


Q: Does being overweight or underweight affect how Menotrophin works?

Official warnings related to the drug state that the risk of developing thromboembolism (blood clots) is generally increased in women who are pregnant. This risk is noted to be further elevated for individuals who are overweight.


Q: How soon after stopping Menotrophin can a person attempt to conceive naturally?

Official prescribing information describes the treatment cycle, which involves administering a final injection of hCG (Human Chorionic Gonadotropin) one day after the last Menotrophin dose to trigger egg release. The treatment protocol describes that sexual intercourse or insemination is typically timed during the period immediately following the hCG injection.


Q: If a woman has a history of blood clots, is Menotrophin still an option?

Official product information highlights that the risk of a serious complication called thromboembolism (blood clots) is increased in individuals who have a personal or family history of blood clots. This factor is part of the clinical considerations for use.


Q: What if I have bleeding that is not my period while I am taking Menotrophin?

Official regulatory documents state that unexplained abnormal uterine bleeding is a condition that prohibits the use of Menotrophin. The official documentation indicates that abnormal vaginal bleeding is a condition that requires immediate reporting to a healthcare provider.


Q: What is the risk of having a miscarriage after becoming pregnant with Menotrophin?

Official product labeling indicates that the rate of spontaneous abortion (miscarriage) is increased in women who undergo assisted reproductive technologies or gonadotropin treatments compared to the general population.


Q: How does Menotrophin compare to purified FSH medications in terms of general use conditions?

Regulatory documents state that Menotrophin contains both FSH and LH activity. If Menotrophin is co-administered with other gonadotropin preparations that contain purified FSH, official constraints require that the total combined daily dose from all gonadotropins does not exceed 450 International Units.


Q: Can Menotrophin affect vision or cause lightheadedness?

Official adverse reaction tables list dizziness (lightheadedness) as a reported side effect of Menotrophin. More serious side effects associated with blood circulation issues, such as thromboembolism, may also include sudden or severe headaches and problems with vision.


Q: Is the chance of birth defects higher in pregnancies resulting from Menotrophin treatment?

Official safety documents indicate that the incidence of congenital malformations (birth defects) following ART procedures or gonadotropin use may be slightly higher than following natural conception. However, it is not confirmed if the medication itself is the cause or if underlying individual factors are a contributing element.


Q: Do patients need to avoid physical activity or exercise while on Menotrophin?

Official safety warnings state that if a woman develops significant ovarian enlargement, intercourse should be prohibited. For women with this condition, official warnings describe limitations on physical activity, which are necessary when ovaries are significantly enlarged.


Q: Why do some people use Menotrophin along with another medicine like hCG?

Menotrophin works to mature the eggs, and a separate injection of Human Chorionic Gonadotropin (hCG) is administered one day following the final dose to complete the process. The hCG acts to induce ovulation (egg release), which is a necessary step for conception.


Q: Does Menotrophin interact with thyroid or adrenal gland medications?

Official prescribing information states that uncontrolled endocrine conditions, such as problems with the adrenal or thyroid glands, are contraindications for Menotrophin use. However, regulatory documents do not specify any established drug-drug interactions with the medications used to control these conditions.


Q: What is the risk of ovarian torsion (twisting) while undergoing Menotrophin treatment?

Official labeling states that ovarian torsion (the twisting of the ovary on its supportive ligaments) has been reported following treatment with gonadotropins. This risk is increased in cases where the ovaries are already enlarged due to the treatment.


Q: How does Menotrophin affect the uterine lining during the cycle?

Official regulatory information describes that the drug is expected to support follicular development, and monitoring for successful treatment includes evaluating the uterine lining (endometrium). Signs of successful development involve sonographic evidence of a secretory endometrium.


Q: What happens in the body if too much Menotrophin is administered?

Administering doses beyond the prescribed limits can lead to an excessive ovarian response, which significantly increases the risk of developing Ovarian Hyperstimulation Syndrome (OHSS). This is a serious condition where the ovaries become severely enlarged.


Q: Why is it important for the cause of infertility to be fully investigated before starting Menotrophin?

A full medical investigation is required before starting Menotrophin to officially rule out specific contraindications. These include conditions like primary ovarian failure or structural abnormalities that are incompatible with pregnancy, as the drug cannot address these underlying problems.


Q: Is there a generic version of Menotrophin, or is it only available under brand names?

Menotrophin is the international non-proprietary name (INN) for the active ingredients, which is the equivalent of a generic name (menotropins). The compound is available and sold under various different brand names.

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How should Menotrophin be stored and disposed of?

The lyophilized powder form of menotrophin must be stored at a temperature not exceeding 25 C (77 F) or at controlled room temperature. The product must not be frozen and must be kept in its original carton to protect it from light.

Storage of Reconstituted Product

Once the medicine is mixed, the solution should generally be used immediately, and any remaining product must be discarded. Specific preparations may permit refrigeration between 2 C and 8 C (36 F and 46 F) for up to 30 days.

Disposal and Child Safety

Keep menotrophin out of the sight and reach of children. All unused product and waste material must be disposed of in accordance with local requirements. Used needles and syringes (sharps) must be placed in a closeable, puncture-resistant container for proper disposal at designated collection centers, as required by regulatory guidance.

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

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