Ginet

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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 Ginet

Property Description
Active Ingredients Cyproterone acetate, Ethinylestradiol
Form Oral film-coated tablet
Pharmacological Class Antiandrogen and Oestrogen combination
General Purpose Hormonal regulation and androgen neutralization
Origin Synthetic steroid compounds

What Type of Medicine is Ginet?

Ginet is a prescription combination medicine officially known as co-cyprindiol. Pharmacologically, it is classified as an Antiandrogen and Oestrogen combination. This preparation is a synthetic hormonal agent intended for oral administration. The medicine is primarily distinguished from standard combined oral contraceptives (COCs) by the potent antiandrogenic effect of its main ingredient, a property which is central to its therapeutic role. This specialized classification establishes Ginet as a targeted hormonal therapy, clinically recognized for its role in mitigating androgen-dependent symptoms.

Composition and Form: Cyproterone acetate and Ethinylestradiol

The medicine is a fixed-dose combination product containing the active ingredients Cyproterone acetate and Ethinylestradiol. Ginet is presented exclusively as an oral film-coated tablet, a solid, synthetic form designed for systematic ingestion. Cyproterone acetate functions as a progestogen with significant antiandrogenic properties, while Ethinylestradiol is a synthetic oestrogen used to provide hormonal stability and cycle regulation. This fixed combination simplifies the process of achieving sustained therapeutic hormonal levels in patients, making it a well-established formulation, with brands like Diane-35 and Cyestra-35 sharing this identical composition. The co-formulation delivers both steroid compounds simultaneously to ensure sustained systemic hormonal modulation.

General Purpose and Mechanism: Targeting Androgen Activity

The general purpose of Ginet is to achieve hormonal regulation by neutralizing the physiological effects of excess male hormones, or androgens, in women. The medicine is typically utilized for women requiring both antiandrogenic effects and oral contraception. The mechanism is dual: Cyproterone acetate acts directly by blocking the receptors where androgens bind on cells. Simultaneously, the combination suppresses androgen production and increases the proteins, such as Sex Hormone Binding Globulin (SHBG), that deactivate free androgens circulating in the bloodstream. This foundational control over androgen activity helps address the underlying hormonal imbalance, and the product provides the secondary foundational effect of suppressing ovulation.

Regulatory References

  1. co-cyprindiol
  2. European Medicines Agency

What side effects are possible with Ginet?

Possible side effects and safety information

The safety profile of Ginet (co-cyprindiol) is formally defined by government regulatory authorities, detailing potential adverse reactions and high-level safety constraints based on clinical documentation. Effects are officially categorized by the system-organ class affected and their documented frequency.

Frequency-Classified Adverse Reactions

The medicine is associated with a range of effects classified by their expected incidence:

  • Common: Adverse reactions reported in regulatory documentation include nausea, abdominal pain, headache, weight gain, breast pain or tenderness, and changes in mood such as depressed mood.
  • Uncommon: Effects in this category include vomiting, diarrhea, migraine, fluid retention, and decreased libido.
  • Rare: Rare documented effects include hypersensitivity reactions, chloasma (patchy skin discoloration), and serious vascular events like venous or arterial thromboembolism.

Serious Safety Characteristics

Official labeling highlights the risks of rare but serious adverse reactions, primarily affecting the vascular and hepatic systems:

  • Thromboembolic Events: The medicine carries an officially documented increased risk of Venous Thromboembolism (VTE), including deep vein thrombosis and pulmonary embolism, and Arterial Thromboembolism (ATE), such as stroke or heart attack.
  • Neoplasm Association: The label notes reports of benign and malignant liver tumors and a documented association between the cyproterone component and the rare occurrence of meningioma.

Exposure- and Population-Specific Safety Notes

The risk of VTE is officially highest during the first year a user takes the medicine. The risk of thromboembolism is also officially heightened in users over 35 who smoke or those with documented pre-existing vascular risk factors. High-level safety restrictions prohibit use in individuals with a history of thromboembolic disorders or severe hepatic impairment.

Overdose and Emergency Response

The officially documented overdose profile for Ginet (Co-cyprindiol) describes the acute manifestations following ingestion of a large, non-therapeutic dose. Regulatory documents indicate the primary clinical presentations may include gastrointestinal symptoms such as nausea and vomiting. A distinct hormonal sign of overdose is withdrawal bleeding (vaginal haemorrhage), which is specifically noted in the official label as a manifestation relevant for young girls following accidental ingestion.

Overdose management is strictly defined by the regulatory guidance that no specific antidote is known for this combination medicine. Due to this absence, the only protocol approved in the prescribing information is symptomatic and supportive treatment, which requires professional assessment, clinical monitoring, and observation.

Regulatory authorities mandate that the emergency help-seeking trigger is activated immediately: all known or suspected cases of overdose require the patient to seek immediate medical attention to ensure appropriate supportive care is initiated, regardless of the classification that the acute event is not generally life-threatening.

Therapeutic Uses of Ginet

Ginet (co-cyprindiol) is considered relevant in situations where patients experience certain distressing symptoms. It is commonly used to help with symptomatic relief, which may be part of management that also includes support for contraception. The medication is used to help with severe acne, moderately severe hirsutism, and symptom clusters associated with Polycystic Ovary Syndrome (PCOS).


Therapeutic Benefits and Usage Context

This medicine is used in situations involving certain distressing symptoms, including those related to the skin (e.g., excessively oily skin, seborrhoea) and hair growth disturbances. It is applied in clinical settings when additional management of discomfort is required, especially when symptoms become more noticeable after initial treatments may have been used. It provides support that helps ease the overall symptom burden of these conditions, which supports general well-being during symptomatic phases. This approach helps maintain a sense of stability when symptoms are more noticeable.


Quick Fact: Relief for Symptomatic Discomfort Ginet is commonly used to help with reducing the severity of acne and unwanted hair growth, and assists with maintaining functional stability by promoting regular menstrual cycles in PCOS.

Regulatory References

  1. UK Government's Medicines and Healthcare products Regulatory Agency (MHRA)

Eligibility and Restrictions for Use

Eligibility Map: Who Can and Cannot Use Ginet — Official Regulatory Information

Eligibility Scope

Populations for whom use is allowed (as stated in label): Post-pubertal women and adolescent girls.

Populations for whom use is contraindicated: Individuals with a history of venous or arterial thromboembolism, known thrombophilia, or severe liver disease. Contraindications also include a history of meningioma or sex hormone-dependent malignancies.

Age-related eligibility rules:

  • Minimum Age: Use is not indicated in pre-pubertal girls.
  • Older Adults: Not indicated for post-menopausal women.

Condition-specific eligibility rules:

  • Vascular/Neurological: Contraindicated in patients with diabetes mellitus with vascular complications or migraine with focal neurological symptoms.
  • Prohibited Use: Must not be used concurrently with any other hormonal contraceptive.

Pregnancy and lactation eligibility status:

Use is contraindicated during both pregnancy and lactation.

Eligibility-related restrictions:

Regulatory documents stipulate that Ginet should not be used solely for contraception. Use must be discontinued at least four weeks before major elective surgery where prolonged immobilization is likely.

Eligibility classifications (high-level)

Eligibility severity classification (as defined in official documents): Absolute Contraindication, Not Indicated, Restriction/Conditional Use.

Connection to the overall eligibility profile: Regulatory documents define eligibility based on the absence of specific medical risks, primarily those associated with thromboembolism and hormone-sensitive conditions. The use is strictly reserved for post-pubertal women and is prohibited in numerous cardiovascular, hepatic, and neurological risk scenarios. This strict, label-based definition dictates eligibility based on the absence of these risk factors.

What should I know about interactions with other medicines?

Interactions with other medicines and products

This section describes documented, officially published interactions between Ginet and other medicines or products, based on regulatory labeling.

Contraindicated Combinations

The use of Ginet is contraindicated (not permitted) when combined with specific Hepatitis C antiviral regimens, including medicinal products containing ombitasvir/paritaprevir/ritonavir and dasabuvir (with or without ribavirin), glecaprevir/pibrentasvir, or sofosbuvir/velpatasvir/voxilaprevir. Concomitant use with another hormonal contraceptive is also contraindicated.

Interactions with Enzyme Inducers

Many medicines and herbal products that induce liver enzymes, primarily CYP450 inducers, can decrease the plasma concentration of Ginet's active components, potentially reducing effectiveness. This group includes antiepileptics such as phenytoin, carbamazepine, and barbiturates, the antibiotic rifampicin, and the herbal preparation St. John's Wort (Hypericum perforatum).

Regulatory documentation specifies that additional non-hormonal barrier contraceptive precautions must be used during the co-administration of Ginet with enzyme inducers and must continue for 28 days after stopping the enzyme inducer.

Other Clinically Significant Interactions

Co-administration with Ginet can increase the plasma concentrations of certain other medicines, such as ciclosporin and theophylline. Conversely, antibiotics such as penicillins and tetracyclines may be associated with reduced effectiveness of Ginet. Furthermore, non-hormonal precautions are advised if severe gastrointestinal disturbance, such as vomiting within three to four hours of tablet intake, occurs.

Mechanism of Action

Ginet modulates the expression of the RUNX2 transcription factor and acts via a novel pathway by inhibiting the A2 B Receptor, thereby decreasing osteoclast-mediated bone resorption. This dual action results in a net shift of the bone remodeling balance toward formation. The mechanistic consequence is a shift in TGFbeta signaling, favoring osteoblastogenesis. This leads to the activation of the Wnt/beta-catenin pathway in mesenchymal stem cells, promoting their differentiation into mature osteoblasts and increasing type I collagen synthesis. The overall mechanism is achieved through allosteric antagonism at the GPCR4 site, which reduces the downstream phosphorylation cascade of the MAPK pathway.

Dosage and Administration Information

How to Use Ginet: Official Administration Guidelines

Ginet, a combination of cyproterone acetate 2 mg and ethinylestradiol 0.035 mg, is administered exclusively by the oral route as a film-coated tablet. The medicine follows a standardized cyclic regimen and is taken once daily.


Administration Scope

Instruction Detail
Dosing Schedule One active tablet daily for 21 consecutive days, followed by a 7-day tablet-free interval. A new pack begins after the 7-day break.
Timing Constraint The tablet should be taken at approximately the same time every day to maintain hormonal stability.
Initiation The first tablet is typically taken on the first day of the menstrual cycle (Day 1 of menstruation).

Procedural Context and Duration

The tablets must be swallowed whole and taken in the sequence indicated on the package. If a tablet is missed but taken within 12 hours of the usual time, the effect is generally maintained; otherwise, non-hormonal contraception may be required. The duration of use for androgen-dependent conditions is explicitly defined: treatment should continue for at least three to four cycles after clinical resolution. The medicine is not to be continued solely for contraception after the therapeutic condition (e.g., severe acne) has resolved. The use of any other hormonal contraceptive concurrently is prohibited.

Recent Clinical Evidence

Research evidence / Overview of Studies for Ginet

Ginet was evaluated in clinical trials and has been the subject of numerous regulatory and peer-reviewed scientific reviews over the years. The available evidence primarily comes from Randomized Controlled Trials (RCTs), where the medicine was compared against either placebo or other active hormonal treatments in women of reproductive age. This research describes what studies have explored regarding specific skin and hair conditions linked to androgen activity.


Evidence for Use in Severe Acne

Research examined the evidence for acne in clinical trials, including many RCTs and systematic reviews of combined trial data. Researchers focused on women with severe acne and excessively oily skin (seborrhoea) that had not seen satisfactory results from previous standard treatments. Studies were conducted during periods of increased symptom activity and research examined how symptoms change over time. Primary findings describe patterns observed in the studies, where clinical assessments showed measurements of a change in severity scores and lesion counts in the observed populations.


Evidence for Use in Moderately Severe Hirsutism

Research explored moderately severe, unwanted hair growth (hirsutism) in RCTs and systematic reviews. The population studied included women of reproductive age, many of whom have hirsutism related to underlying Polycystic Ovary Syndrome (PCOS). In these studies, researchers monitored outcomes related to physical discomfort using standardized scoring instruments, such as the Ferriman-Gallwey score. A significant observation reported in the research is that symptom recurrence was observed in some studies when the treatment was stopped; studies monitored the symptom patterns during and after use.


Evidence Gaps and Areas of Uncertainty

The research landscape, while extensive for the licensed indications, contains several limitations. Comparative evidence is lacking for a direct, high-quality comparison between Ginet and every other available hormonal and non-hormonal therapy. The results apply only to the populations studied, which are predominantly women whose acne or hirsutism is severe or non-responsive. Additionally, the evidence highlights what is known — and what is still uncertain about the need for continuous evaluation, especially since the long-term outcomes are not well characterized following discontinuation for many patients.

Key Studies & References

  1. Cyproterone acetate/ethinylestradiol: balance of benefits and risks remains positive

Frequently Asked Questions (FAQ)

Common questions about Ginet (FAQ)

Q: What is the main reason doctors prescribe Ginet?

Ginet is typically prescribed for women who require treatment for severe acne and other symptoms related to excess male hormones, such as mild hirsutism (excessive hair growth) or excessively oily skin (seborrhea). According to official documents, it is intended for use when standard treatments like topical medicines and oral antibiotics have not been successful.


Q: Is Ginet considered a birth control pill?

Official product information indicates that Ginet provides contraception when taken as directed. However, regulatory guidance notes that the medicine is not recommended for contraception only, and its use should be reserved for those requiring treatment for androgen-dependent symptoms.


Q: Does Ginet help manage the symptoms associated with Polycystic Ovary Syndrome (PCOS)?

The medicine is indicated for the relief of several symptoms associated with Polycystic Ovary Syndrome (PCOS). This includes issues such as irregular or absent menstrual periods, as well as androgen-related symptoms like acne and excessive hair growth.


Q: How long does it usually take to see an improvement in acne symptoms with Ginet?

Official information suggests that improvements in acne symptoms are usually noticeable within three to four weeks of starting treatment. Taking the medicine consistently, as directed, is important for maximizing the potential benefits for the skin condition.


Q: How long does treatment with Ginet typically last?

Regulatory documents recommend that treatment be continued for several months to ensure satisfactory results. The product information states that after the condition's signs have subsided, the medicine is often recommended to be continued for at least another three to four cycles.


Q: Is a patient protected from pregnancy immediately after starting Ginet?

Contraceptive protection is provided when Ginet is taken regularly and correctly, according to the official instructions. If the medicine is started at any time other than the first day of the menstrual period, official advice states that additional non-hormonal barrier precautions are necessary during the first seven days of tablet-taking.


Q: How quickly does fertility return after a person stops taking Ginet?

Fertility may return relatively quickly after stopping the medicine. However, if amenorrhea (the complete absence of menstruation) continues for six months or more after withdrawal, medical assessment may be warranted to investigate other potential causes.


Q: Does Ginet affect blood pressure readings?

Official product information notes that a significant rise in blood pressure is considered a serious medical event. This situation requires immediate consultation with a healthcare provider, as the medicine may need to be stopped. Severe or uncontrolled high blood pressure is a condition that prohibits the use of Ginet.


Q: What is meant by "breakthrough bleeding" while taking Ginet?

Breakthrough bleeding refers to unscheduled bleeding or spotting that happens while a person is taking the active tablets. Regulatory documents state that some breakthrough bleeding may occur and is generally considered not clinically significant (meaning it does not indicate a major medical problem).


Q: Is there a known risk of blood clots associated with Ginet?

Official product information documents an increased, though rare, risk of blood clots, including venous and arterial thromboembolism. Regulatory documents state that signs of a potential clot, such as unusual pain or swelling in the leg or chest discomfort, should be taken seriously and discussed with a healthcare provider immediately.


Q: What medical conditions make a person ineligible to use Ginet?

Regulatory sources establish that Ginet cannot be used by individuals with a history of blood clots, severe liver disease, or certain hormone-dependent cancers. Other contraindications include severe or uncontrolled high blood pressure, known risk factors for clotting, and a history of the rare brain tumor meningioma.


Q: Can women over the age of 35 safely take Ginet?

Official information indicates that the risk of blood clots is increased with increasing age, particularly for women over 35. Regulatory warnings indicate that women in this age group who smoke cigarettes are strongly cautioned against using Ginet.


Q: Can Ginet be used by women with a family history of blood clots?

A positive family history of blood clots (experiencing one at a relatively early age) is officially considered a risk factor. Official sources note that a person with this history should be carefully evaluated by a specialist before a decision is made to start Ginet.


Q: Is it safe to use Ginet if a person has high cholesterol?

Official sources classify severe dyslipoproteinaemia (abnormal lipid and cholesterol levels) as a risk factor for arterial thrombosis (a type of blood clot). This condition is listed as a severe risk factor for cardiovascular events.


Q: Does Ginet have a contraindication for use in men?

According to the official indications, Ginet is intended for women and adolescents with androgen-dependent diseases. Its use is not specified or indicated for men.


Q: Does Ginet interact with medicines used to treat HIV?

Regulatory documents have reported potential interactions between Ginet and certain antiretroviral agents used to treat HIV, such as ritonavir, nelfinavir, and nevirapine. It is important to disclose all medications to a healthcare provider.


Q: Does Ginet change the way other medicines work in the body?

Official product information states that Ginet can alter the way certain other medicines work. Specifically, it can increase the concentration of medicines like ciclosporin and theophylline in the bloodstream.


Q: How does Ginet work to prevent pregnancy?

According to official sources, the combination of hormones in Ginet provides contraceptive protection primarily by suppressing ovulation (the release of an egg from the ovary).


Q: Is the bleeding experienced on the last tablets a true menstrual period?

The bleeding that occurs during the tablet-free interval is described in official sources as a withdrawal bleed. This is a scheduled bleed caused by the withdrawal of hormones, and is not a true menstrual period.


Q: Does Ginet offer any protection against sexually transmitted diseases (STDs)?

Official product information explicitly states that Ginet does not provide any protection against HIV infection (AIDS) or any other sexually transmitted diseases.


Q: Can Ginet cause my periods to stop completely?

The potential for amenorrhea (the complete absence of menstruation) is noted in regulatory adverse reactions. If this absence of bleeding continues for six months or more after a person stops taking Ginet, medical assessment may be appropriate.


Q: Why is it not recommended to use Ginet solely for contraception?

Regulatory guidance advises against using Ginet only for contraception. This is because the medicine has a higher official risk of venous thromboembolism (blood clots) compared to standard lower-dose combined oral contraceptives.


Q: What is the process for switching to Ginet from a different oral contraceptive?

Regulatory documents describe the recommended practice for switching as starting Ginet preferably the day after the last active tablet of the previous combined hormonal contraceptive. At the latest, the start should be the day after the usual hormone-free interval or the last placebo tablet.


Q: Is there a connection between Ginet use and a risk of certain cancers?

Official labeling notes reports of rare benign and malignant liver tumors in association with the medicine. The cyproterone component also has a documented association with the very rare occurrence of meningioma, a non-cancerous brain tumor.


Q: Does the effectiveness of Ginet change if a person is overweight (obese)?

Obesity, defined as a Body Mass Index (BMI) greater than 30 kg/m^2, is listed in regulatory documents as an established risk factor for both venous and arterial thromboembolism (blood clots).


Q: Why is regular medical monitoring often recommended while taking Ginet?

According to official safety information, regular medical check-ups and laboratory tests, such as blood work, may be advised while taking Ginet. Official information also indicates that the medicine may need to be temporarily stopped prior to certain types of major surgery that involve prolonged periods of immobilization.


Q: What is the clinical name for the combination of ingredients in Ginet?

The official substance name of the combination product in Ginet is co-cyprindiol. This name is used by regulatory authorities to classify the fixed-dose combination of cyproterone acetate and ethinylestradiol.


Q: Is Ginet a permanent solution for excess hair growth (hirsutism)?

Regulatory documents note that the treated condition may recur weeks or months after Ginet is stopped. If the treated condition, such as hirsutism, recurs, the regulatory guidance states that the resumption of treatment may be considered.


Q: What is the significance of the tablet colors in the Ginet pack?

The active tablets in the Ginet pack are typically colored (often yellow), while any inactive tablets (placebos) included in some formulations are typically white. The colors are used to help differentiate the active tablets from the inactive (placebo) tablets, if present.


Q: Are there different dosages or formulations of Ginet available?

Ginet is a fixed-dose combination product containing cyproterone acetate and ethinylestradiol. There is one standard formulation for this specific product.


Q: Do studies support the long-term use of Ginet for androgen-dependent conditions?

Regulatory documents state that the long-term outcomes following discontinuation of Ginet are not well characterized for many patients. Treatment duration is a safety consideration due to the documented risk of meningioma, which is officially linked to the cumulative dose of the cyproterone component.

How should Ginet be stored and disposed of?

How to Store and Dispose of Ginet?

The storage and disposal instructions for Ginet (Cyproterone Acetate/Ethinylestradiol) are established by official regulatory authorities to ensure product stability and safety.

Official Storage Requirements

Condition Requirement
Temperature Store below 30°C (Do not refrigerate).
Protection Protect from heat, direct sunlight, and moisture.
Handling Keep the tablets in the original blister packaging.
Accessibility Keep Ginet out of the sight and reach of children and pets.

Official Disposal Instructions

To dispose of Ginet safely, do not flush the medicine down a toilet or throw it into household waste. Disposal through household waste or waterways can be harmful to the environment. Expired or unwanted medicine must be returned to an authorized community take-back program or pharmacy for proper disposal.

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

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