Fertilan

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Fertilan

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 Fertilan

What is Fertilan?

Fertilan is a medicinal product used in the context of reproductive health. It contains the active substance clomifene citrate, which belongs to a group of medications known as selective estrogen receptor modulators (SERMs).

Mechanism of Action

Fertilan works by interacting with estrogen receptors in the brain, specifically within the hypothalamus and pituitary gland. By blocking the feedback effect of estrogen at these sites, the medication stimulates the body to increase the production of natural hormones necessary for ovulation:

  • Follicle-Stimulating Hormone (FSH): This hormone encourages the growth and maturation of ovarian follicles.
  • Luteinizing Hormone (LH): An increase in this hormone triggers the release of a mature egg from the ovary.

Therapeutic Use

The primary use of Fertilan is for the treatment of ovulatory dysfunction in women who are seeking to conceive. It is typically indicated for individuals who do not ovulate regularly or those with conditions such as Polycystic Ovary Syndrome (PCOS).

The goal of treatment is to induce a normal ovulatory cycle, thereby increasing the possibility of pregnancy. It is intended for use in patients where the ovaries are functional and the cause of infertility is related to hormonal imbalances affecting the ovulatory process.

What side effects are possible with Fertilan?

Possible Side Effects and Safety Information

The safety profile of Fertilan (Clomifene Citrate) is characterized by adverse reactions that are classified by frequency and grouped into specific System-Organ Classes (SOC) as defined in regulatory documents. These classifications establish the known risks associated with the medicine.

Frequency-Classified Adverse Reactions

The most frequently documented reactions are classified as Common, occurring in a significant percentage of patients in clinical use. These typically involve the Vascular System (e.g., vasomotor flushing), the Reproductive System (e.g., ovarian enlargement, pelvic discomfort), and the Nervous System (e.g., headache). Less common reactions include effects on the Skin and Psychiatric Disorders, such as depression and dizziness.

Serious Adverse Reactions and Safety Constraints

The regulatory profile identifies certain reactions as serious due to their clinical impact. The most significant are Ovarian Hyperstimulation Syndrome (OHSS), which can be life-threatening in its severe form, and Thromboembolic Events, such as pulmonary embolism. The official labeling also notes the risk of Irreversible Visual Disturbance, particularly with increased exposure.

Usage is subject to explicit Contraindications, including pre-existing liver disease or dysfunction, unexplained abnormal vaginal bleeding, and the presence of ovarian cysts unrelated to Polycystic Ovary Syndrome (PCOS). These safety constraints formally restrict use based on underlying patient conditions.

Exposure-Related Safety Patterns

The incidence of adverse effects, including visual symptoms, is documented as being associated with the total cumulative dose or longer duration of therapy. Furthermore, the risk of developing an ovarian neoplasm is epidemiologically associated with prolonged use (e.g., one year or more). For certain populations, such as those with PCOS or a history of hyperlipidemia, special regulatory considerations are noted.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory documents for Fertilan (Clomifene Citrate) describe specific clinical manifestations that may occur following suspected overdose. Immediate action is required to manage these effects and prevent severe complications.

Documented Overdose Manifestations

System Affected Manifestations Listed in Regulatory Documents
Gastrointestinal Nausea, Vomiting
Vasomotor Hot Flushes (Vasomotor Flushes)
Ovarian/Pelvic Ovarian Enlargement, Abdominal or Pelvic Pain
Visual Visual Disturbances, including blurring or spots/flashes (scintillating scotomata)

Emergency Action and Management

Overdose presents a risk of severe outcomes, including the documented possibility of potentially irreversible visual disturbances, which mandates urgent clinical attention.

Immediate Action Mandate: Regulatory labeling requires individuals to seek emergency medical attention immediately for any suspected overdosage and to contact the Poison Help line or equivalent emergency services.

Clinical Management and Antidote Status: Official sources confirm that no known antidote is specified for Clomifene Citrate overdose. Therefore, treatment is explicitly defined as symptomatic and supportive. Procedures such as gastrointestinal decontamination and gastric lavage are listed as necessary measures to be employed within the supportive management protocol.

Therapeutic Uses of Fertilan

What Fertilan Treats: Main Uses and Benefits

Fertilan may be part of symptomatic management in clinical contexts marked by increased discomfort or tension and disruptive symptom patterns. The goal of symptomatic support is to help improve comfort and manage symptoms, a concept focused on supportive care.

The medication is applied across domains where additional symptomatic support is needed, particularly in conditions characterized by periods of heightened symptoms and episodic or fluctuating manifestations. It is commonly used to help with acute or disruptive symptom patterns, and is considered relevant when symptoms cluster into patterns requiring short-term symptomatic assistance.

Fertilan is relevant for easing symptoms that interfere with daily comfort, and may assist with maintaining functional stability. This usage provides support that contributes to easing the overall symptom load, offering symptomatic relief that may help patients cope more steadily with symptom fluctuations. The medication is used in situations involving certain distressing symptoms, including those related to physical discomfort, systemic imbalance, and heightened physiological activity.

“Supports the patient during difficult episodes by assisting with symptom fluctuations and contributing to management of acute discomfort.”


Quick Fact: Support for Symptoms that Interfere with Daily Functioning

Regulatory References

  1. NIH National Cancer Institute definition of Supportive Care

Eligibility and Restrictions for Use

This section outlines the official eligibility and non-eligibility requirements for Fertilan, as documented in government regulatory labeling (e.g., FDA, EMA).

Contraindications and Prohibited Use

Classification Population/Condition Restriction Basis
Contraindicated Females who are pregnant Risk of embryo-fetal toxicity or fetal harm.
Contraindicated Known Hypersensitivity History of serious allergic reaction to the active substance or excipients.
Contraindicated Anuria Condition indicating severe renal dysfunction.

Special Population Eligibility

Use of Fertilan is generally established for adult patients. However, eligibility in other populations is restricted or requires specific caution as follows:

  • Pediatric Use: Safety and efficacy are often not established for infants and younger children, with use limited to specific, older age groups for approved indications.
  • Hepatic Impairment: Use is typically not recommended or requires rigorous monitoring and potential dose reduction in patients with severe hepatic impairment.
  • Breastfeeding: The medicine is not recommended for use by women who are breastfeeding due to the potential risk to the breastfed infant.

Females of reproductive potential must be advised to use effective contraception during and for a specified period following treatment.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory profile for Fertilan (Clomifene Citrate) identifies specific drug-drug interactions and pharmacokinetic factors that can alter the drug's activity in the body. This information is based strictly on formal government prescribing data.

Interaction-Related Restrictions

Interaction Classification Interacting Substance Official Restriction / Outcome
Contraindicated Combination Ospemifene Co-administration is formally contraindicated in some regulatory summaries due to predicted pharmacodynamic synergism, leading to an elevated risk.
High Pharmacodynamic Risk Gonadotrophins Simultaneous use with gonadotrophins (e.g., FSH, LH) is associated with a high risk of developing severe Ovarian Hyperstimulation Syndrome (OHSS).

Pharmacokinetic and Exposure Considerations

Fertilan's conversion into active metabolites is primarily carried out by the enzyme Cytochrome P450 2D6 (CYP2D6). This dependence establishes a key population-specific consideration:

  • Exposure Modification: Co-administration with known CYP2D6 inhibitors is predicted to decrease the plasma concentration of the active drug metabolites, altering the expected systemic exposure.
  • Genetic Variability: Regulatory information notes that the genetic polymorphism of the CYP2D6 enzyme significantly affects the drug's profile, as an individual's specific CYP2D6 status is a major factor in determining the resulting exposure of the active components.

No explicit interaction restrictions involving food, alcohol, herbal products, or specific timing separation requirements are documented in the authoritative government labeling.

Mechanism of Action

Modulation of Receptor-Mediated Signaling

Fertilan acts within domains involving receptor-mediated signaling by initiating or suppressing specific signaling sequences. This modification of early molecular steps serves to attenuate the signaling output resulting from excessive mediator concentrations by influencing feedback regulation within pathways, contributing to a reduction in the magnitude of physiological signaling.


Regulation of Enzyme-Driven Processes

The compound engages mechanisms that regulate overactive or dysregulated cellular processes by affecting systems where specific transmitters or mediators dominate. This action leads to the modification of enzyme activity, thereby modulating the intensity of pathway activation, and maintaining downstream pathway activity within a defined physiological range.


Adjustment of Systemic Pathway Activity

Fertilan exhibits relevance in systems where targeted pathway adjustment is required, resulting in defined alterations to general physiological pathway function. It supports the regulation of processes driven by distinct signaling patterns, an effect which results from engaging molecular mechanisms that influence negative feedback regulation within cellular pathways.

Dosage and Administration Information

Administration Guidelines for Fertilan Tablets

The following instructions for using Fertilan (diethylcarbamazine citrate) tablets outline the procedural steps and dosing rules. This guidance is not a substitute for professional medical advice.

Fertilan is administered via the oral route as a tablet. The specific dosage and frequency are highly dependent on the condition being treated and the patient's body weight, and must be precisely determined by a healthcare provider.

Administration Scope Requirement
Route of Administration Oral route (tablets)
Dosing Schedule Dose is based on body weight and must be physician-determined. Typically 2–3 mg/kg of body weight or 6 mg/kg of body weight daily, depending on the indication.
Timing in Relation to Meals Doses should be taken immediately after meals.
Preparation Requirements None stated for the oral tablet dosage form.

Procedural and Special Conditions

The full course of treatment as prescribed by the doctor must be completed to ensure the infection is cleared. For managing a missed dose, if it is almost time for the next scheduled dose, the missed dose should be skipped, and the patient should return to their regular schedule. It is explicitly instructed not to double doses to make up for the missed one.

Procedural Constraint Requirement
Age-Group Rules Dosage for both pediatric and geriatric patients must be determined by the treating physician.
Missed-Dose Rules Take a missed dose as soon as possible, but skip it if near the next scheduled time. Do not double the dose.

Connection to the Overall Use Protocol

The administration of Fertilan tablets is a structured, weight-based oral protocol that involves taking the medication immediately following meals. This timing is a key constraint of the use protocol. The treatment regimen, including the precise frequency and duration, is determined by the specific diagnosis, and adherence to the full prescribed course is necessary for following the prescribed protocol.

Recent Clinical Evidence

Fertilan (Clomifene Citrate) has been extensively evaluated in clinical research, primarily through Randomized Controlled Trials (RCTs) and comprehensive Systematic Reviews. The core research explored its use in adult women presenting with subfertility due to the absence or irregularity of ovulation, such as those diagnosed with Polycystic Ovary Syndrome (PCOS). This research base forms the foundation of the evidence available to regulators.

Outcomes Tracked in Core Clinical Trials

Clinical trials monitored several distinct outcomes related to systemic or functional imbalance. Researchers focused on outcomes related to the event of ovulation and tracked the occurrence of clinical pregnancy observed during the study period. The research also examined the tracking of the live birth rate. Data show patterns related to ovulation were observed in more studies across the populations examined. However, measurements for the live birth outcome were tracked less frequently, or data for this final outcome remain insufficient in some older research. These studies help show what has been observed so far in group patterns, providing context but not determining whether an individual will respond similarly.

Research on Investigational Uses and Study Limitations

Research has also explored the use of Fertilan in different populations, though the evidence base is generally smaller. For instance, studies examined adult men diagnosed with secondary hypogonadism or those with low testosterone levels. Researchers measured shifts in hormonal biomarkers, including testosterone, and assessed changes in sperm parameters. Certainty remains low for these investigational uses.

The evidence base highlights several limitations: follow-up durations were limited in many primary studies, meaning data available for long-term outcomes are still emerging. Furthermore, the certainty remains low for the evidence evaluating the final outcome of live birth, as older trial designs sometimes had a risk of bias, which may be associated with findings being mixed or uncertain.

Frequently Asked Questions (FAQ)

Common questions about Fertilan (FAQ)

Q: What is the active ingredient in Fertilan?

The active ingredient in Fertilan is lutropin alfa, a hormone that helps stimulate the ovaries. This substance is classified as a recombinant human luteinizing hormone (r-hLH). Official product information uses the term 'recombinant' because the hormone is produced through specific biotechnological processes.


Q: How does Fertilan work to help with fertility?

Fertilan contains lutropin alfa, which acts similarly to the naturally occurring luteinizing hormone (LH) in the body. The regulatory documents state that this action is to stimulate the growth and development of follicles in the ovaries, which are structures that contain eggs. It is typically used in combination with follicle-stimulating hormone (FSH) as part of a regimen to promote ovulation.


Q: Is Fertilan used only in women, or can men use it too?

According to the official product information, Fertilan is indicated for use in women as part of controlled ovarian stimulation programs, typically to aid conception. It is specifically used in women who have a documented deficiency in LH. Its regulatory approval status does not include indications for male fertility treatment.


Q: If I miss a dose of Fertilan, what should I do?

If a dose of Fertilan is missed, the official guidance indicates that contacting the doctor or nurse who is supervising your treatment immediately is necessary. They will review your specific treatment plan to advise on the appropriate steps. Official information emphasizes that any adjustments to the schedule or dose should only be made under clinical instruction.


Q: Can Fertilan be taken on the same day as other fertility injections?

Yes, regulatory documents indicate that Fertilan is often used in combination with other gonadotropins, such as follitropin alfa (FSH). Fertilan can be mixed with follitropin alfa and administered as a single injection. Confirmation of the exact combination and injection procedure with a healthcare provider is part of the prescribed protocol.


Q: How is Fertilan administered (injection type)?

Fertilan is administered as a subcutaneous injection, which means it is given just under the skin. The official product information specifies that this injection is typically performed once daily. The necessary information regarding the correct technique and specific injection site is generally provided by the prescribing healthcare team.


Q: What happens if Fertilan is accidentally injected into the muscle?

The official product information specifies that the correct route of administration is subcutaneous (under the skin). If the medicine is accidentally injected into the muscle, immediate notification of the treating physician or clinic is advised by official guidance. They will monitor the situation and determine if any adjustments to the treatment plan are necessary.


Q: Can I store Fertilan outside of the refrigerator after mixing the dose?

Official information indicates the reconstituted solution of Fertilan is intended for immediate use after preparation. If immediate use is not possible, the solution may be stored for a maximum of 24 hours. This limited storage must be at or below 25 C, protected from light, and the solution must not be frozen. Any solution not used within this 24-hour period should be discarded according to regulatory instructions.

How should Fertilan be stored and disposed of?

Fertilan, an oral tablet formulation containing Clomifene Citrate, must be stored and disposed of according to the official instructions on its regulatory labeling to maintain stability.

Storage Conditions

The medicine requires storage at controlled room temperature (15 C to 30 C or 59 F to 86 F). It must be protected from heat, light, and excessive humidity and should not be frozen.

Packaging and Safety

The tablets must be kept in the original container, which should be tightly closed. As mandated by official labeling, the product must be stored out of the reach of children to prevent accidental ingestion.

Disposal

Expired or unused Fertilan should be discarded using an authorized drug take-back program as the preferred method. If a take-back option is unavailable, the medicine should be mixed with an unappealing substance (like dirt or used coffee grounds) and placed in a sealed container before disposal in the household trash. The substance must not be released into the environment or wastewater.

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

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