Cabertrix

Quick links to important sections

Medically reviewed

Marina Burgos

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 Cabertrix

Cabertrix is a prescription pharmaceutical preparation containing the single active ingredient Cabergoline. It is classified as a long-acting dopamine receptor agonist, functioning to restore hormonal balance by suppressing elevated levels of the hormone prolactin. The medicine is a synthetic compound and is available for administration only as an oral tablet.


Quick Facts: Cabergoline

Property Description
Active Ingredient Cabergoline
Form Oral Tablet
Pharmacological Class Dopamine Receptor Agonist
Origin/Type Synthetic, Ergot Derivative
General Purpose Prolactin level reduction

What Type of Medicine is Cabertrix?

Cabertrix contains Cabergoline as its chemically defined, single active component. This substance is an Ergot Derivative with an established pharmacologic class of Dopamine Receptor Agonist. This classification defines the substance's core pharmacological action: the highly specific activation of dopamine receptors, primarily the D2 subtype. Cabergoline is a fully synthetic molecule, ensuring a consistent and high-purity chemical structure, contrasting with preparations derived from crude natural extracts. The drug is prescription-only (Rx status), reflecting the necessity of medical supervision due to its potent, targeted hormonal effect.


Understanding Cabergoline's Primary Action

The mechanism of Cabergoline is focused on the neuroendocrine system, where it acts by mimicking the function of the natural neurohormone dopamine. Cabergoline selectively targets and stimulates specific D2 receptors located on the lactotroph cells within the pituitary gland. By activating these receptors, the substance exerts a direct and potent inhibitory effect on the secretion and release of the hormone prolactin into the bloodstream. This action of sustained prolactin suppression is the general therapeutic purpose of Cabergoline, which is utilized to counteract the effects of high prolactin concentrations, a condition clinically recognized for disrupting reproductive and endocrine health.


Cabergoline: Differentiation and Duration

A distinguishing feature of Cabergoline's design is its long-acting profile, with an estimated elimination half-life ranging over two days. This characteristic is structurally inherent and ensures a prolonged and predictable pharmacological effect on prolactin regulation. While Cabergoline is the INN (International Nonproprietary Name), Cabertrix is one of several commercial preparations that utilize this powerful active ingredient to address conditions stemming from elevated prolactin levels in adult patients.

What side effects are possible with Cabertrix?

Cabertrix: Possible side effects and safety information

The official regulatory safety profile for Cabertrix (cabergoline) documents a range of adverse reactions classified by frequency and body system, alongside specific constraints and serious risk considerations. Adverse effects that are classified as Very Common (affecting more than 1 in 10 people) in regulatory documents are nausea and headache. Common effects include dizziness, constipation, abdominal pain, fatigue, and somnolence (sleepiness), with many of these falling under the Nervous System and Gastrointestinal System categories.

Classification System-Organ Class (SOC) Examples
Common Nervous System (Dizziness, Somnolence)
Common Gastrointestinal (Constipation, Dyspepsia)
Uncommon Vascular (Orthostatic Hypotension, Syncope)

Serious adverse reactions are specifically documented in official labeling. These include Cardiac Valvulopathy (disease affecting heart valves) and Fibrotic Disorders (scarring of tissue, such as pulmonary or retroperitoneal fibrosis). These serious risks are primarily associated with long-term exposure. The labeling also notes the risk of serious Impulse Control Disorders, such as pathological gambling or hypersexuality, which have been reported with a Not Known frequency.

Regulatory documents mandate specific constraints: Cabertrix is formally contraindicated in patients with a history of fibrotic disorders or existing valvular heart disease, requiring a pre-treatment cardiovascular evaluation. Specific monitoring, including periodic echocardiograms for cardiac safety, is required during long-term therapy. Patients with severe hepatic impairment also require closer clinical monitoring.

Overdose and Emergency Response

The overdose profile for Cabertrix (cabergoline) reflects the consequences of excessive dopaminergic stimulation, which primarily impacts the central nervous and cardiovascular systems, as documented in official regulatory labeling.

Domain Official Regulatory Statement
Documented Overdose Manifestations Symptoms include signs of heightened dopaminergic activity, such as nausea, vomiting, gastric complaints, nasal congestion, hypotension (low blood pressure), postural hypotension, syncope (fainting), hallucinations, and psychotic reactions.
Required Emergency Action Seek immediate medical attention for any suspected overdose. Emergency services must be contacted if the individual exhibits collapse, seizures, or trouble breathing.
Supportive Management Management is strictly supportive, as no specific antidote is known for Cabergoline. Treatment involves general supportive measures aimed at removing unabsorbed drug (e.g., activated charcoal or gastric lavage for recent ingestion) and monitoring blood pressure to manage potential profound hypotension. A dopamine antagonist may be considered solely to manage severe central nervous system effects.

Regulatory documents define this overdose as a condition requiring immediate professional intervention due to the risk of severe cardiovascular and CNS complications. The sustained nature of the drug's effect necessitates continuous monitoring in a medical setting, particularly to manage severe hypotension and to address potential psychotic reactions.

Therapeutic Uses of Cabertrix

What Cabertrix Treats: Main Uses and Benefits


Official information indicates that Cabertrix (cabergoline) is applied in addressing conditions marked by systemic or localized discomfort. The medication is generally applied across domains where additional symptomatic support is needed to promote functional stability and address systemic imbalance.

The primary therapeutic uses include promoting stable menstrual cycles and supporting ovulation, managing galactorrhea (unwanted milk flow), and easing symptoms related to pituitary tumors (prolactinomas) and sexual dysfunction. The drug may assist with managing symptom clusters that can become intense or disruptive.

“This supportive relief helps maintain a sense of stability when symptoms are more noticeable.”

This approach is applied to help manage pronounced symptoms, such as headaches, visual disturbances, and reproductive irregularity. Cabertrix supports the patient during episodes of heightened discomfort and may assist with functional stability.

Quick Fact: Relief for Galactorrhea

Regulatory References

  1. UK Medicines Compendium for Dostinex

Eligibility and Restrictions for Use

This information outlines the official eligibility and non-eligibility criteria for Cabertrix (cabergoline) as documented in regulatory sources.

Populations Who Must Not Use Cabertrix (Contraindications)

Cabertrix is strictly contraindicated and must not be used by individuals with the following conditions, as these pose a serious health risk:

  • Hypersensitivity to cabergoline, its components, or any other ergot-derived medication.
  • Uncontrolled hypertension (high blood pressure).
  • A history of or current evidence of fibrotic disorders affecting the lungs (pulmonary), heart (pericardial), or abdomen (retroperitoneal).
  • Anatomical evidence of cardiac valvular disorders (valvulopathy of any valve), which must be ruled out by a pre-treatment echocardiogram for patients starting long-term therapy.

Restricted or Special Consideration Populations

Use of Cabertrix requires caution and/or a lower starting dose in certain groups:

  • Severe Hepatic Impairment: Patients with severe liver disease (Child-Pugh Class C) are generally not recommended to use this medicine; if used, the dose should be limited and closely monitored.
  • Pregnancy-Induced Hypertension: The drug is generally not recommended for women with pre-eclampsia, eclampsia, or postpartum hypertension.
  • Age-Related Rules: Safety and effectiveness have not been established in pediatric patients (under 16 years of age).
  • Lactation: The medicine is generally not recommended for women who are breastfeeding or wish to breastfeed, as it inhibits milk production.
  • Psychotic Disorders: Caution is advised for patients with a history of serious, particularly psychotic, mental disorders.

What should I know about interactions with other medicines?

Cabertrix (cabergoline) has formally documented interaction patterns established by regulatory authorities. The profile outlines combinations that are generally prohibited due to pharmacodynamic antagonism. This includes the co-administration of dopamine antagonists, suchades certain antipsychotic medications or metoclopramide, which directly oppose the intended pharmacological effect. Combining Cabertrix with other ergot derivatives is also restricted due to the potential for additive toxicity.

Pharmacokinetic interactions are noted with substances that affect the drug's clearance. Potent CYP3A4 inhibitors, such as macrolide antibiotics, should be avoided as regulatory documents state they may lead to elevated cabergoline plasma levels through decreased metabolism. Furthermore, specific population considerations exist, as patients with severe hepatic insufficiency are documented to experience a measurable increase in drug exposure (AUC).

Caution is required when co-administering Cabertrix with antihypertensive agents or vasoconstricting agents. These interactions are classified as pharmacodynamic synergism, carrying a risk of additive symptomatic hypotension or enhanced vasospasm, respectively. Regarding ingestion constraints, official labeling confirms that food does not alter the drug’s kinetics. The effects of alcohol on the overall tolerability are currently unknown, but additive hypotensive risk is noted.

Mechanism of Action

Direct Activation of Dopamine D2 Receptors

Cabertrix functions as a synthetic, direct agonist at the Dopamine D2 Receptor ( D2 R), primarily situated on the lactotroph cells of the anterior pituitary gland. This receptor targeting initiates an inhibitory G i-protein signaling cascade that functionally suppresses the cell's ability to synthesize and release the hormone prolactin ( PRL). This interaction applies an immediate inhibitory signal to the lactotroph cell population.

Sustained Intracellular Suppression

The D2 R activation leads to the inhibition of adenylyl cyclase and subsequent reduction of key internal messengers (cyclic AMP and calcium ions). This suppression of the cell's secretory machinery results in the physiological consequence of reduction of circulating serum prolactin levels. The drug's structural design allows for slow dissociation from the receptor, ensuring the inhibitory signal persists over an extended duration, shaping the drug's physiological action profile.

Functional Mechanisms and Constraints

The mechanism is functionally constrained by factors such as dopamine agonist resistance, where the receptor response is biochemically insufficient. Separately, the drug exhibits off-target agonism at the Serotonin 5-HT2 B receptor, which initiates an unintended proliferative cascade in non-pituitary tissues, defining a physiological constraint on the long-term mechanism.

Dosage and Administration Information

How to Use Cabertrix: Official Administration Guidelines

Cabertrix (cabergoline) is administered exclusively through the oral route as a tablet. The manner and frequency of use are strictly governed by the therapeutic goal, requiring distinct schedules for chronic treatment versus short-term use. Tablets are typically supplied in a 0.5 mg strength and are often scored, allowing for precise division into the 0.25 mg doses required for starting therapy and dose adjustments.


Administration and Dosing Schedule

For long-term prolactin management, the initial dose is 0.25 mg twice weekly. The dose is increased gradually, with adjustments of 0.25 mg twice weekly occurring at intervals of no less than four weeks. The total weekly dose must be divided into at least two administrations when the amount exceeds 1 mg per week. The maximum recommended dose for chronic hyperprolactinemia is typically 2 mg per week, although higher weekly doses may be used in certain clinical contexts.

For the inhibition of physiological lactation, a single 1 mg dose is administered, usually within 24 hours postpartum. To suppress established lactation, a short course of 1 mg total is given, administered as 0.25 mg every 12 hours for two days.


Administration Conditions and Adjustments

Cabertrix tablets are recommended to be taken with or immediately after a meal to enhance patient tolerance and manage potential gastrointestinal issues. If a dose is missed, patients should take the next scheduled dose on its usual day without doubling the dose.

In the context of severe hepatic impairment, it is suggested that physicians consider lower doses for patients receiving long-term treatment. The safety and effectiveness of Cabertrix have not been established in subjects under 18 years of age.

Recent Clinical Evidence

Research Evidence and Overview of Studies for Cabertrix


Evidence for use in High Prolactin Levels (Hyperprolactinemia)

Research has evaluated Cabertrix in individuals who have outcomes related to systemic or functional imbalance, specifically those with persistently high prolactin levels. Studies in this area have monitored how prolactin levels evolved in the observed populations in research settings where the medicine was administered, including patients whose high prolactin is caused by a non-cancerous growth on the pituitary gland (prolactinoma) and those whose cause is unknown. Data show patterns related to how prolactin levels evolved in the studies. For example, some studies report how symptoms evolved in the observed populations, with data showing patterns related to measured changes in prolactin levels in a number of participants.

However, the evidence quality varies across studies, and results apply only to the populations studied. Research has explored different measures of prolactin level change, and findings were mixed regarding the speed and degree of change across all observed participants. Research highlights changes measured during the study period, but data are still emerging about what specific factors may relate to how an individual's prolactin level may change over time.


Evidence for use in Supporting Fertility and Menstrual Health

Cabertrix was studied for its role in research scenarios exploring outcomes related to systemic or functional imbalance in women who experience high prolactin levels where studies evaluated outcomes related to systemic or functional imbalance. Research examined conditions marked by functional limitations, such as irregular or absent menstrual periods (amenorrhea) and the disruption of normal egg release (anovulation). These studies were applied in research contexts involving fluctuating or unstable symptoms of the cycle.


Long-term Studies and Follow-up

Long-term effects are not fully established, as follow-up durations were limited in many initial research settings. While some studies contribute to the broader evidence landscape by offering extended data, there is limited information for long-term outcomes regarding the durability of response after the study period concludes. Research is ongoing to provide more comprehensive data on durability and long-term outcomes, which may help address areas where certainty remains low.


What is Still Uncertain about Cabertrix

Research indicates that long-term effects are not fully established, and certain aspects of findings measured over long time intervals remain uncertain. Research has observed cases where data related to the observed populations were not uniform or where changes measured during the study period were observed in some studies but not others. This means the evidence helps contextualize how patients reported their experience, but research provides context but not individual predictions.

Key Studies & References

  1. Diagnosis and Treatment of Hyperprolactinemia: An Endocrine Society Clinical Practice Guideline
  2. Functioning and nonfunctioning pituitary adenomas in pregnancy - The European Society of Endocrinology Clinical Practice Guideline

Frequently Asked Questions (FAQ)

Common questions about Cabertrix (FAQ)

Q: Does Cabertrix need to be taken indefinitely?

According to official product information, treatment for persistently high prolactin levels (hyperprolactinemia) may be discontinued after levels have been maintained at a normal range for approximately six months. Following discontinuation, the official documentation suggests that periodic monitoring of prolactin levels is generally required to assess for potential recurrence.

Q: Is it normal to experience mild headaches when beginning Cabertrix?

Yes, regulatory documents list headache as a very common adverse reaction reported in clinical trials, affecting over one in four patients. This effect is often reported during the initial phase of dose adjustment. Regulatory data suggests that initial side effects such as headache may decrease or resolve in some individuals with continued use.

Q: What makes Cabertrix different from similar medicines used for the same condition?

Cabertrix (cabergoline) is characterized as a long-lasting dopamine receptor agonist. This characteristic allows for a less frequent dosing schedule, typically once or twice weekly, compared to other medicines in the same class. This is noted as an important distinguishing feature in official documents.

Q: What are the general findings of the long-term studies on Cabertrix?

Long-term studies reviewed by regulators show high efficacy for chronic conditions. Clinical data reported that prolactin levels were normalized in a large majority of patients in the studies (around 86%). The medicine is generally reported to be well-tolerated, with a low percentage of patients discontinuing treatment due to side effects.

Q: Is Cabertrix known to affect fertility or reproductive health?

Cabertrix is specifically used to manage high prolactin, a hormonal imbalance that can affect reproductive health. Regulatory documents state that it is used to manage high prolactin, which can be associated with irregular cycles. Studies examined its role in restoring menstrual cycles and ovulation in these populations. The drug is also indicated for the inhibition of physiological lactation (milk production).

Q: What is the shelf life or typical storage requirement for Cabertrix?

Official information outlines that the tablets must be kept in the original, tightly closed container with the desiccant to protect them from moisture and light. The specific shelf life is provided on the official product label and may vary by the manufacturer and the package size.

Q: How long did the clinical trials for Cabertrix last?

Clinical trials used for regulatory review involved studies of various lengths, depending on the therapeutic goal. Official documents indicate that initial and chronic treatment outcomes were monitored over durations that included periods of 8 weeks, 6 to 12 months, and up to 24 months of continuous therapy.

Q: What is the difference between the active and inactive ingredients in Cabertrix?

The active ingredient is Cabergoline, the substance that provides the therapeutic function. Inactive ingredients (or excipients) vary by formulation but generally include substances like microcrystalline cellulose and magnesium stearate, which are used to stabilize the tablet and aid its manufacture.

Q: Is it necessary to take Cabertrix at a specific time of day?

Regulatory guidance does not mandate a specific time of day for administration (such as morning or night). Official documentation indicates that the medicine is to be taken consistently on its scheduled day(s), and label information confirms it can be taken with or without food.

Q: Is Cabertrix considered a preventative or a treatment medicine?

Official information states that Cabertrix is indicated for the treatment of disorders caused by high prolactin levels. It is also indicated for the inhibition or suppression of physiological lactation soon after delivery for specific medical reasons, which is a form of preventative intervention.

Q: How quickly does Cabertrix typically start to show effects?

Studies indicate that a significant reduction in serum prolactin levels can be observed as quickly as the first week of treatment. The full effect, where prolactin levels are reported to be normalized, typically occurs within two to four weeks of reaching the effective therapeutic dose.

Q: Has the research on Cabertrix been published in major medical journals?

Yes. The clinical data and research findings supporting the drug's efficacy and safety were published in major medical and scientific journals. These published results were thoroughly reviewed by government health authorities as part of the approval process.

Q: Is Cabertrix available as a generic medicine?

Yes. The active ingredient, Cabergoline, is the generic name of the medicine. It is currently available as a generic tablet from various manufacturers in the United States and other international markets.

Q: Why do official prescribing documents mention limitations for Cabertrix?

Official prescribing documents include limitations and specific warnings due to the risk of serious adverse reactions. These reactions, which include the potential for cardiac valvulopathy (heart valve disease) and other fibrotic disorders, require specific patient monitoring and pre-treatment evaluation.

Q: Does Cabertrix cause any changes in weight?

The official regulatory safety profile mentions unusual weight gain or loss as a possible adverse reaction. However, the frequency of this specific effect in the patient population is currently classified as 'not known' in the official labeling.

Q: What is the physical appearance of the Cabertrix medicine (e.g., color, shape)?

The 0.5 mg tablet strength is commonly described as white to off-white, oblong or capsule-shaped, and is typically scored with a dividing line on one side. The tablets usually also feature an identifying code or number debossed onto them.

Q: What are the warning signs listed for when to contact a healthcare provider about Cabertrix?

Official regulatory warnings list certain symptoms associated with serious risk, such as chest pain, trouble breathing, persistent cough, or swelling in the limbs. The appearance of new or increased strong urges, such as pathological gambling or hypersexuality, is also noted in regulatory information as a concern to be disclosed.

Q: Are there any specific lifestyle adjustments recommended when using Cabertrix?

Regulatory documents state that caution is necessary regarding activities requiring full alertness, such as driving, due to the potential for somnolence or sudden sleep onset. The product information also notes that rising slowly from a sitting or lying position may help mitigate the risk of dizzy spells.

Q: What information does the patient leaflet for Cabertrix include?

The patient information leaflet contains detailed information necessary for safe use, including a list of potential side effects, specific warnings (like cardiac risks), necessary precautions during pregnancy, required patient monitoring, and information about the inactive ingredients used in the formulation.

Q: Does Cabertrix contain any common allergens, such as lactose or gluten?

Official labeling confirms that some formulations of Cabertrix contain lactose as an inactive ingredient (excipient). Patients with a known intolerance to lactose should consult the specific prescribing information for their particular medication.

Q: Does Cabertrix have a known withdrawal period when stopping its use?

The regulatory label advises that after discontinuation, serum prolactin levels should be monitored periodically. This procedure is to assess for the potential recurrence of hyperprolactinemia, which would determine if treatment must be restarted.

Q: What regulatory body initially approved Cabertrix?

The initial approval for the brand-name formulation of this medicine in the United States was granted by the US Food and Drug Administration (FDA) in 1996. Official documentation indicates that global medical use was first approved earlier, in 1993.

How should Cabertrix be stored and disposed of?

Storage and Disposal of Cabertrix (Cabergoline)

Cabertrix tablets must be stored at controlled room temperature, maintaining a range between 20 C and 25 C (68 F and 77 F). Storage must not exceed 25 C.


Environmental and Packaging Rules

To ensure stability, the medication must be kept away from moisture and heat, and should not be stored in damp areas. The tablets must remain in the original container, which must be kept tightly closed and should retain the desiccant if present.

Safety and Disposal

It is mandatory to store Cabertrix out of the sight and reach of children to prevent accidental ingestion. Unused or expired medication must be disposed of according to local regulatory requirements, typically by utilizing a drug take-back program or following instructions from a pharmacist.

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

Available in countries:

Equivalent of Cabertrix found in:

A-Z Index: