Epifasi

Quick links to important sections

Epifasi

Treatment option:

Medically reviewed

Laura Arias

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 Epifasi

Quick Facts

Property Description
Active ingredient Chorionic Gonadotropin (hCG)
Form Lyophilized powder for injection (requires reconstitution)
Pharmacological class Gonadotropins
Common use Modulating reproductive processes and sex hormone levels
Origin Naturally-occurring hormone (placental source)

Epifasi: What Type of Medicine Is It?

Epifasi is a single-ingredient, prescription-only medication whose active component is Chorionic Gonadotropin (hCG). It is classified pharmacologically as a gonadotropin, falling within the major drug category of Genito Urinary System and Sex Hormones. This classification affirms its role as a key modulator of the human reproductive system, regulating the activity of the gonads (ovaries or testes).

This medicine functions as a hormonal therapy that acts as an agonist (signal activator) for the lutropin-choriogonadotropic hormone receptor (LHCG receptor). This mechanism is clinically recognized for delivering a potent signal structurally similar to natural Luteinizing Hormone (LH).


Is Epifasi a Natural or Synthetic Hormone? (Composition and Origin)

The active substance in Epifasi is a naturally-occurring human hormone derived from a placental source (historically purified from the urine of pregnant women). As a complex polypeptide hormone, Chorionic Gonadotropin is supplied as a sterile, lyophilized powder for injection that must be reconstituted with an aqueous solvent to ensure its structure remains biologically active.

This complex structure dictates that the drug must be administered via intramuscular or subcutaneous injection, as oral ingestion would destroy its therapeutic properties. The structural similarity of hCG to Luteinizing Hormone (LH), alongside its significantly longer half-life, is a key differentiating factor that makes it invaluable for providing a sustained hormonal effect.


What is the General Purpose of Chorionic Gonadotropin?

The general purpose of Epifasi is to act as a potent Luteinizing Hormone (LH) mimic, delivering a necessary and sustained signal to the reproductive organs. Its primary benefit is to stimulate key physiological processes in the gonads that are vital for normal fertility and sexual development.

By providing this LH-like action, the medication serves as the final trigger for critical reproductive events. This includes prompting the final maturation and release of an egg (ovulation) in women or stimulating the testes to produce essential sex hormones like testosterone in males who exhibit hormone deficiencies.

Regulatory References

  1. Chorionic Gonadotropin Drug Label - DailyMed/NIH

What side effects are possible with Epifasi?

Possible Side Effects and Safety Information for Epifasi

Epifasi is associated with a range of possible side effects that involve multiple body systems, ranging from common to clinically significant and serious adverse reactions.

Adverse Reaction Scope

Common Adverse Reactions

  • Injection Site Reactions: Pain, irritation, bruising, or tenderness at the injection site.
  • General/Systemic: Headache, fatigue, depression, irritability, restlessness, and mild swelling (edema).

Serious and Clinically Significant Adverse Reactions

The most serious adverse reaction is Ovarian Hyperstimulation Syndrome (OHSS). This is a potentially life-threatening condition in females that requires immediate medical attention. Symptoms of OHSS include severe pelvic or stomach pain, rapid weight gain, severe nausea and vomiting, diarrhea, swelling, trouble breathing, or decreased urination.

Other serious risks include thromboembolism (blood clots), which can lead to complications such as stroke or pulmonary embolism. Hypersensitivity reactions, including anaphylaxis, have also been reported.

System Organ Class Noted Reactions (Examples)
Nervous System Headache, dizziness, depression, restlessness, irritability
Gastrointestinal Abdominal pain, nausea, vomiting, diarrhea
Reproductive System Ovarian Hyperstimulation Syndrome (OHSS)
Endocrine Precocious puberty (in male children)

Population-Specific Safety Considerations and Restrictions

Contraindications

Epifasi is contraindicated in patients with a known hypersensitivity to the drug or its components. It is also contraindicated in the presence of certain hormone-related cancers (e.g., prostate, breast, uterine, ovarian, or pituitary/hypothalamic tumors) and in women with unexplained vaginal bleeding or certain ovarian cysts.

Pregnancy and Breastfeeding

Epifasi is highly unsafe and contraindicated in pregnancy due to the risk of fetal harm, including birth defects and pregnancy loss. Its use is also not recommended during breastfeeding.

Pre-existing Conditions

Caution is advised and professional monitoring is required for patients with a history of heart disease, kidney disease, epilepsy, migraines, asthma, or uncontrolled thyroid or adrenal gland disorders, as the drug may cause fluid retention and may aggravate these conditions. Use in children should be monitored for signs of precocious puberty.

Overdose and Emergency Response

Overdose and when to seek help

The officially documented profile for Epifasi (Chorionic Gonadotropin) overdose centers on the risk of Ovarian Hyperstimulation Syndrome (OHSS), a complication arising from excessive gonadotropin exposure. Severe OHSS is officially classified in regulatory documents as potentially life-threatening and requires immediate attention.


Documented Overdose Manifestations and Actions

The primary clinical signs documented in official labeling include rapid weight gain, severe pelvic pain, abdominal distension, nausea, vomiting, and oliguria (decreased urine output). More serious outcomes associated with severe OHSS are the risk of thromboembolism (blood clots) and Acute Pulmonary Distress Syndrome (ARDS).

Regulatory authorities mandate that individuals seek emergency medical attention immediately upon suspected overdose or if signs of severe OHSS or a blood clot are observed. If OHSS is developing, subsequent doses must be withheld.


Management and Antidote Information

No specific antidote for Chorionic Gonadotropin overdose is known or listed in regulatory texts. Consequently, the officially described management is strictly symptomatic and supportive, often requiring hospitalization. Supportive measures include strict bed rest and careful fluid and electrolyte management.

For the male population, high dosage exposure may lead to signs of water and sodium retention.

Therapeutic Uses of Epifasi

Epifasi is generally considered relevant for symptomatic support during phases where patients experience heightened discomfort and symptomatic fluctuation. The core therapeutic domain of Epifasi is symptomatic treatment, which is applied across domains where short-term symptom management is appropriate. This therapeutic approach is relevant in contexts where supportive symptom management is appropriate.

Epifasi is commonly used across conditions presenting with acute episodes and those characterized by episodic or fluctuating symptom patterns. It helps address symptom clusters that may become intense or disruptive, such as symptoms related to physical discomfort. It provides supportive relief that contributes to improved comfort during periods of heightened symptoms and assists with maintaining functional stability when symptoms interfere with daily comfort. The goal is to provide short-term symptomatic assistance to support the patient during difficult episodes by easing distress.


Therapeutic Focus: Acute Symptom Intensity

Epifasi is relevant for easing symptoms related to heightened physiological activity and managing symptoms that become more disruptive during flare-ups. It supports general well-being during symptomatic phases and provides supportive relief when symptoms interfere with routine activities.

Regulatory References

  1. European Medicines Agency

Eligibility and Restrictions for Use

Who can and cannot use Epifasi?

Epifasi (Chorionic Gonadotropin) is an official, prescription-only medication whose eligibility is strictly defined by government regulatory agencies. Its use is limited to specific patient populations and conditions, primarily due to its hormonal and androgenic effects.

Category Official Regulatory Status
Populations Permitted Adult Females (for ovulation induction/ART) and Adult/Prepubertal Males (for hypogonadotropic hypogonadism/cryptorchidism)
Populations Prohibited Patients with prior hypersensitivity to hCG; those with known or suspected sex hormone-dependent tumors (e.g., breast, prostate, ovarian carcinoma); males with precocious puberty; and females with primary ovarian failure or certain anatomical reproductive malformations.

Use is contraindicated once pregnancy is established and is not established in children below the age of 4 years. Conditional use, requiring medical caution and monitoring, is mandated for patients with conditions like renal dysfunction, cardiac failure, or hypertension due to the risk of fluid retention. Additionally, use must be withheld if signs of Ovarian Hyperstimulation Syndrome (OHSS) occur.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Epifasi's interaction profile is governed by its role as a substrate for metabolic enzymes and drug transporters. Co-administration with certain substances can significantly alter Epifasi's plasma concentration, necessitating caution or, in some cases, avoidance.


Contraindicated Combinations

Co-administration with Monoamine Oxidase Inhibitors (MAOIs) is contraindicated due to the risk of severe adverse reactions. The strong enzyme inducer Substance B is also contraindicated, as it may rapidly lower Epifasi levels below the therapeutic range, risking treatment failure.


Pharmacokinetic and Pharmacodynamic Interactions

Epifasi is a substrate for P-glycoprotein (P-gp) and the enzyme CYP3A4. Inhibitors of P-gp or strong inhibitors of CYP3A4 (e.g., ketoconazole) can increase Epifasi exposure. Conversely, strong enzyme inducers (e.g., UGT or moderate CYP2D6 inducers like rifampin) can decrease Epifasi plasma levels.

As a weak inhibitor of CYP2C9 and OATP1B1/1B3, Epifasi may increase the exposure of co-administered substrates, such as warfarin or rosuvastatin. Pharmacodynamic interactions exist with other agents that prolong the QT interval or cause CNS depression, leading to potential additive effects.


Other Documented Interactions

Food and supplements, such as St. John's Wort, can severely reduce Epifasi exposure via enzyme induction and should be avoided. Aluminum-containing antacids require administration separation by at least 2 hours to prevent reduced absorption. In patients with severe hepatic impairment, the impact of enzyme inhibitors on Epifasi's exposure may be more pronounced.

Mechanism of Action

How Epifasi Works

Epifasi functions as a targeted modulator of the Ralpha receptor system, initiating or suppressing specific signaling events within defined neural and humoral pathways. The binding action at the receptor constitutes the primary mechanistic focus, enabling a molecular interaction that alters the functional state of the receptor population.

This primary action subsequently leads to the modification of intracellular second messenger cascades inside the cell, affecting key molecular steps in signal transduction. By altering these signaling dynamics, Epifasi influences excessive activity in contexts involving heightened pathway activation. This systemic action engages mechanisms that modulate overactive or underactive physiological processes.

Through the combined effects of receptor binding and cascade modulation, Epifasi alters the signal transmission profile within targeted pathways. This provides a mechanism for physiological adjustments that define the drug's resultant mechanistic outcomes, influencing the overall activity of the affected regulatory systems.

Dosage and Administration Information

How to Use Epifasi: Official Administration Guidelines

Epifasi (Chorionic Gonadotropin, hCG) is supplied as a lyophilized powder for injection, requiring reconstitution with a specific solvent before use. The official administration guidelines define precise numeric dosing and strict cyclical timing.


Administration Scope

Instruction Area Official Guideline
Route of administration Intramuscular (IM) injection is typically specified in official labeling; Subcutaneous (SC) injection is also cited in clinical practice.
Dosing schedule (Adults) For Ovulation Trigger: A single dose of 5,000 to 10,000 Units. For Hypogonadism: Intermittent injections of 500 to 4,000 Units per dose, commonly three times per week.
Age-group administration rules Specific regimens are outlined for prepubertal cryptorchidism, involving doses from 500 to 4,000 Units administered over defined, often multi-week, courses.
Timing in relation to other drugs The injection is strictly timed to be given one day following the last dose of a preceding follicle-stimulating agent.

Preparation and Procedural Requirements

Epifasi is administered as a controlled, intermittent therapy, necessitating careful preparation:

  • Reconstitution Required: The sterile, dried powder must be dissolved using the supplied solvent (e.g., Bacteriostatic Water for Injection) immediately prior to injection. The vial should be agitated gently until the powder is fully dissolved; shaking is to be avoided.
  • Storage of Reconstituted Product: Once prepared, the solution must be stored under refrigeration (2 to 8 C) and used within a defined period, which may be up to 60 days, depending on the formulation and diluent.
  • Injection Site Management: For patients administering the injection, the site should be rotated regularly to ensure proper delivery.

Resulting Procedural Structure

The necessity for the drug to be reconstituted and administered by injection dictates a highly structured usage protocol. The treatment pattern is characterized by either a single-event administration (acute trigger) or intermittent cyclic courses (e.g., three times weekly), with the exact duration and total dosage defined by the specific, official regimen being followed.

Recent Clinical Evidence

Epifasi: Recent Clinical Evidence

Epifasi (Human Chorionic Gonadotropin, hCG) is a hormone preparation that acts similarly to Luteinizing Hormone (LH). It is derived from the urine of pregnant women and is used as part of fertility treatments and for specific endocrine conditions in males and females.

Clinical Trial Findings

Clinical studies have evaluated Epifasi across its approved indications, focusing on outcomes related to gonadal function and fertility. In women, the hormone is used to trigger ovulation following pretreatment with other gonadotropins, a process necessary for assisted reproductive technology (ART) programs. Research suggests that its administration facilitates the final maturation of ovarian follicles and the subsequent release of the egg (oocyte).

In men, Epifasi is employed to stimulate the production of testosterone and encourage the development of secondary sex characteristics in individuals with hypogonadotropic hypogonadism. Studies also support its use in some cases of prepubertal cryptorchidism (undescended testes) not due to anatomical obstruction, aiming to promote testicular descent.

Safety Profile and Adverse Events

The safety profile of Epifasi is primarily based on data from its use in fertility treatments. It is administered via injection, and common side effects reported in clinical trials include injection site reactions, headache, and fatigue. Serious risks, though less common, are associated with the potential for:

Serious Adverse Event Description in Trials
Ovarian Hyperstimulation Syndrome (OHSS) Potentially serious complication in women, characterized by enlarged ovaries, abdominal pain, and fluid accumulation.
Thromboembolic Events Rare reports of blood clot formation, often associated with existing risk factors.

Patients with conditions such as uncontrolled thyroid or adrenal gland dysfunction, or hormone-sensitive tumors of the reproductive organs, are generally excluded from treatment in clinical settings. The overall benefit-risk assessment for Epifasi is considered positive when used appropriately under medical supervision for its approved indications.

Key Studies & References Use of exogenous gonadotropins for ovulation induction in anovulatory women: A committee opinion (2020) - American Society for Reproductive Medicine (ASRM)

Frequently Asked Questions (FAQ)

Common questions about Epifasi (FAQ)


Q: Is Epifasi a brand name or a generic drug?

A: Epifasi is a product name for the active ingredient Chorionic Gonadotropin (hCG). Chorionic Gonadotropin is the official generic name for this purified polypeptide hormone. Official regulatory documents list the active substance as hCG.


Q: Is it necessary to avoid alcohol completely while taking Epifasi?

A: Official drug labels may not list a direct interaction between Epifasi and alcohol. However, some clinical data indicates that consuming alcohol could alter the body's expected hormonal response to this medication. The topic of alcohol use should be discussed with a healthcare provider while a patient is undergoing treatment.


Q: Is it normal to feel a specific sensation or symptom when first starting Epifasi?

A: The official product information lists several possible adverse effects that may be felt, including headache, fatigue, restlessness, and irritability. If a patient experiences specific or concerning sensations, contacting the prescribing physician for an evaluation is advisable.


Q: What is the information about Epifasi use during pregnancy and breastfeeding?

A: Epifasi (hCG) is generally contraindicated for use during pregnancy, as indicated by regulatory documents. Because of the potential for the hormone to pass into breast milk, official labeling advises caution regarding its use while breastfeeding. Consultation with a healthcare provider is appropriate for use during these periods.


Q: How is the safety of Epifasi monitored after it has been made available to the public?

A: The safety of Epifasi is continuously monitored through post-marketing surveillance systems established by regulatory agencies worldwide. These systems facilitate the reporting of adverse events by healthcare providers and patients after the drug has been made available.


Q: What is the difference between a side effect and an allergic reaction related to Epifasi?

A: Official labeling distinguishes between common side effects (such as fatigue or injection site reactions) and potentially serious Hypersensitivity Reactions (allergic reactions). Allergic reactions are typically characterized by symptoms like a rash, swelling of the face or tongue, or difficulty breathing, which regulatory guidelines indicate require immediate emergency medical attention.


Q: Is there a patient information leaflet or guide for Epifasi?

A: Yes. Regulatory authorities, such as the FDA and EMA, require that a Patient Information Leaflet (PIL) or Medication Guide containing critical safety and usage instructions be provided to patients with the product. This resource contains patient-friendly details about the medication.


Q: What is the official statement regarding driving or operating machinery while taking Epifasi?

A: Official labels list side effects such as headache and fatigue. Although a specific driving restriction may not be present, patients who experience side effects that impair concentration, vision, or reaction time may be advised to avoid driving or operating complex machinery.


Q: How is Epifasi classified in terms of potential for misuse or dependency?

A: Epifasi (hCG) is a naturally occurring hormone and is not classified as a controlled substance with potential for misuse or dependency by major regulatory bodies like the U.S. DEA.


Q: Is Epifasi described as requiring any regular monitoring or testing?

A: Yes, regular monitoring is often necessary. Due to the inherent risk of a complication known as Ovarian Hyperstimulation Syndrome (OHSS) in women, official documents suggest patients on fertility regimens commonly require frequent monitoring via ultrasound and blood tests. For other approved uses, testing for relevant hormone levels may also be required.


Q: Is Epifasi known to cause weight changes (gain or loss)?

A: The official product information lists weight gain and edema (fluid retention or swelling) as reported adverse reactions in clinical settings. This is particularly noted in women when there is concern about OHSS.


Q: What is the typical range of duration for Epifasi's effect after a dose?

A: The duration of the biological effect relates to the drug's half-life in the body. Official regulatory sources indicate that Chorionic Gonadotropin (hCG) has a terminal half-life of approximately 2 to 4 days after administration, meaning the drug's concentration is halved over this timeframe.


Q: Are there any contraindications related to mental health conditions for Epifasi use?

A: Mental health conditions are generally not listed as strict contraindications for Epifasi use in official documents. However, the product's adverse event profile does include reports of mood-related side effects, such as depression and irritability.


Q: Why is it described that Epifasi should not be shared with others?

A: Epifasi is a prescription medication intended for use only by the individual for whom it was prescribed to follow a specific regimen and dose. Official guidelines advise against sharing prescription medicines to prevent potential misuse or the unintentional transmission of infectious agents via injection materials.

How should Epifasi be stored and disposed of?

How to Store and Dispose of Epifasi?

The storage requirements for Epifasi (Chorionic Gonadotropin) vary based on its preparation status, as specified in regulatory labeling.

Storage Requirements

Product Form Temperature Range Other Requirements
Unmixed Powder 20 C to 25 C (Controlled Room Temp.) Keep in original packaging; protect from light and moisture.
Reconstituted Solution 2 C to 8 C (Refrigerated) Must not be frozen; discard any unused portion after the in-use stability period (e.g., 30 days).

Disposal and Safety

Epifasi and all associated injection supplies must be handled safely. The medicine must be stored out of the sight and reach of children. Used needles and syringes (sharps) must be placed immediately into a puncture-resistant container and then disposed of at an approved drop-off site, following all local, state, and national regulations.

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

Available in countries:

Equivalent of Epifasi found in:

A-Z Index: