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Диане 35

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Диане 35

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

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Overview of Диане 35

What is Диане 35?

Quick Facts
Active Ingredients Cyproterone Acetate, Ethinyl Estradiol
Form Oral Tablet
Pharmacological Class Antiandrogen-Estrogen Combination
General Purpose Countering effects of hormone imbalance/androgen excess
Origin Synthetic Steroid Hormones

1. What Kind of Medicine is Диане 35?

Диане 35 is a prescription-only, combination hormonal medicine provided in the form of an oral tablet. It is classified as an Estrogen-Progestogen and Antiandrogen combination. This specific formulation is widely recognized for its effectiveness in managing specific hormonal presentations.

This medicine is a synthetic product designed for oral administration, combining two active steroid hormones. While its hormonal structure gives it an integrated contraceptive effect by suppressing ovulation, it is primarily regarded as a specialized therapeutic agent for hormone-sensitive conditions.

2. What is Диане 35 Made Of?

The medicine is a fixed-dose combination containing two distinct synthetic active ingredients: Cyproterone Acetate (CPA) and Ethinyl Estradiol (EE). This pairing distinguishes it from standard oral contraceptives, most of which lack the potent anti-androgenic action provided by the CPA component.

The formula is defined by the unique dual nature of Cyproterone Acetate, which functions as both a progestin and, critically, as a potent antiandrogen. The Ethinyl Estradiol component acts as the estrogen. This combination is highly effective at reducing the levels of free, active male hormones in the body.

3. What is the Primary Purpose of this Combination?

The primary functional purpose of the combined formulation is to effectively counter the physical effects of hormonal imbalance caused by excessive male hormone (androgen) activity in women. The two active components work together to manage this hormone profile through a dual blocking and neutralizing approach.

This medicine is generally intended to help relieve physical symptoms that result when androgens are overactive. The unique combination ensures the Cyproterone component directly blocks androgen receptors, while the Ethinyl Estradiol component assists in neutralizing free androgens in the bloodstream.

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What side effects are possible with Диане 35?

Possible side effects and safety information

The safety profile for this combination anti-androgen and estrogen medicine is structured by regulatory documents based on frequency and system-organ effects. The most critical safety concerns documented across official regulatory labels relate to vascular risk.


Official Adverse Reaction Frequencies

Adverse reactions are classified into categories based on observed incidence in clinical trials and post-marketing surveillance:

Frequency Examples of Listed Effects
Very Common Headache
Common Nausea, Abdominal pain, Mood alterations, Depressed mood, Migraine, Weight increase, Breast pain or tenderness
Uncommon Hypersensitivity reactions

These effects are grouped into System-Organ Classes including Vascular Disorders, Gastrointestinal Disorders, Nervous System Disorders, and Psychiatric Disorders.


Serious Adverse Reactions and Key Constraints

The medicine is associated with a rare but serious risk of Venous Thromboembolism (VTE), including deep vein thrombosis and pulmonary embolism, and Arterial Thromboembolism (ATE), such as myocardial infarction or stroke. The risk of VTE is officially documented as highest during the first year of use. Other rare serious risks include Hepatic Neoplasia (liver tumors).

Use is subject to significant regulatory restrictions. The medicine is strictly contraindicated for individuals with a history of thrombosis, active liver disease, or known thrombogenic conditions. Furthermore, due to the hormonal content, official safety notes mandate that the medicine must not be used concurrently with any other hormonal contraceptive or estrogen/progestogen combination. Safety considerations also note increased risk for specific groups, such as smokers over 35 years old, regarding serious cardiovascular events.

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Overdose and Emergency Response

The official regulatory documentation for this combined hormonal preparation, Cyproterone Acetate/Ethinyl Estradiol (Диане 35), defines specific clinical manifestations and immediate required actions in the event of an acute overdose.

Documented Overdose Profile

An acute overdose is generally documented by regulatory authorities as typically not likely to be life-threatening. The official prescribing information lists the expected clinical presentation as including symptoms associated with the hormonal components, such as nausea, vomiting, and the occurrence of withdrawal bleeding (vaginal bleeding) a few days after the event. Other documented effects may include headache and breast tenderness.

When to Seek Immediate Medical Help Regulatory labeling mandates that individuals seek immediate medical help right away if an overdose is suspected or has occurred, and contact a local Poison Control Center. This urgent action is required to ensure appropriate clinical observation and monitoring in a healthcare facility. Standard monitoring procedures may include checking vital signs and conducting blood and urine tests.

Antidote and Management The official product information specifies that no specific antidote is known for an overdose of this combination medicine. Consequently, all management is strictly defined as symptomatic and supportive treatment to address the effects of the hormonal excess. Any treatment involving supportive procedures, such as the potential use of activated charcoal, is carried out under professional medical supervision.

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Therapeutic Uses of Диане 35

What Diane 35 Treats: Main Uses and Benefits

The primary therapeutic role of Diane 35 is generally used to help with symptomatic relief for physical manifestations associated with high male hormone activity (androgens), known as androgenisation, in women of reproductive age. It is considered relevant for specialized symptomatic management when other common treatments have proven inadequate. The medicine is commonly used to help with symptoms related to severe acne and associated signs of androgenization, including seborrhoea and mild hirsutism, when acne is deemed refractory to standard, initial approaches.


This medication plays a role in addressing a cluster of symptoms, including moderate to severe acne, excessive body and facial hair growth (hirsutism), and increased skin and hair oiliness (seborrhoea). It is applied in clinical settings for conditions where symptoms are driven by underlying hormonal imbalance, such as those related to Polycystic Ovary Syndrome (PCOS). The therapy is often used when symptoms are persistent and associated with other signs of increased androgen activity, particularly when a comprehensive approach to symptom management is appropriate.


Quick Fact: Relief for Androgen-Driven Symptoms

Therapeutic Focus Symptom Category Patient Benefit
Dermatology Refractory Acne, Seborrhoea Contributes to easing the overall symptom load and supports skin comfort.
Endocrinology Hirsutism, Cycle Irregularity May assist with managing unwanted hair growth and is relevant for managing symptoms related to cycle regularity.

Regulatory References

  1. Health Canada Product Monograph on Cyproterone/Ethinyl Estradiol
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Eligibility and Restrictions for Use

Who can and cannot use Диане 35?

The population eligibility for Диане 35 (Cyproterone Acetate/Ethinyl Estradiol) is strictly defined by regulatory authorities and is highly restrictive, focusing on specific patient criteria.

Eligibility Scope

Classification Population/Condition
Allowed (Conditional) Women of reproductive age who have reached menarche for androgen-related symptoms only after standard local or systemic treatments have failed (e.g., severe acne) [Source 1.5].
Not Recommended Women over 35 years of age who smoke [Source 1.4]; use is not indicated after menopause [Source 1.4].
Contraindicated Men [Source 1.2]; pregnant or breastfeeding women [Source 1.2]; patients with current or history of venous or arterial thromboembolism or related predisposing conditions [Source 1.2].

Key Comorbidity and Restriction Rules

The medicine is absolutely contraindicated in populations with a history of meningioma, severe hepatic disease until liver function normalizes, liver tumours, or sex-steroid influenced malignancies [Source 1.2, 4.3]. The product must not be used concomitantly with any other hormonal contraceptive to prevent excessive hormone dosage [Source 1.3]. For organ function, the product has not been specifically studied in renally impaired patients [Source 1.2].

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What should I know about interactions with other medicines?

Interactions with other medicines and products

Official Interaction Restrictions

Co-administration of Диане 35 (Cyproterone Acetate / Ethinyl Estradiol) is subject to strict regulatory constraints focused on changes to hormone exposure and severe safety risks.

Classification Official Restriction
Absolute Contraindication Co-administration is formally prohibited with all other hormonal contraceptives (due to increased estrogen exposure) and specific Hepatitis C antiviral combinations (e.g., Ombitasvir, Dasabuvir, Glecaprevir, Pibrentasvir), which carry a risk of liver enzyme elevations.
Timing-Based Requirement The medicine must be discontinued for at least four weeks before and through two weeks after any major surgery or period of prolonged immobilization to mitigate vascular risk.

Pharmacokinetic Exposure Modification

Interactions are commonly rooted in the effect of co-administered substances on Cytochrome P450 (CYP) enzymes.

  • Enzyme Inducers (e.g., Rifampicin, certain anticonvulsants, the herbal product St John's Wort) may accelerate hormone metabolism, leading to a reduction in exposure and potential loss of therapeutic effect.
  • Enzyme Inhibitors (e.g., specific antibiotics and antifungals) may slow hormone metabolism, causing an increase in plasma concentrations of Cyproterone Acetate and Ethinyl Estradiol.
  • The combination may also increase the plasma concentration of co-administered drugs like Ciclosporin, Theophylline, and Tizanidine.

This medicine is contraindicated in patients with severe hepatic impairment due to the importance of liver function in its metabolic clearance.

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Mechanism of Action

Диане 35 is a co-formulation of two synthetic steroidal compounds: cyproterone acetate (a progestin and antiandrogen) and ethinylestradiol (an estrogen). The mechanism involves two primary parallel actions.

First, cyproterone acetate acts as a competitive antagonist at the androgen receptor (AR) in target tissues like the pilosebaceous unit. This blocks the binding of endogenous androgens, primarily testosterone and dihydrotestosterone, thereby preventing their downstream intracellular transcriptional signaling cascade. Concurrently, cyproterone acetate and ethinylestradiol exert an antigonadotropic effect by acting as agonists at the progesterone and estrogen receptors in the pituitary gland and hypothalamus. This positive feedback suppresses the pulsatile release of gonadotropin-releasing hormone (GnRH) and consequently inhibits the secretion of luteinizing hormone (LH) and follicle-stimulating hormone (FSH).

The resulting systemic physiological consequence is a significant reduction in the synthesis and circulating concentration of endogenous ovarian androgens, which augments the local receptor blockade at the tissue level.

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Dosage and Administration Information

Official Administration Guidelines

Диане 35 is a coated oral tablet containing a fixed dose of 2 mg Cyproterone Acetate and 0.035 mg Ethinyl Estradiol. The administration protocol follows a cyclic regimen, designed for women of reproductive age, and is not indicated for use before menarche.


Dosing and Scheduling

Category Official Instructions
Route of Administration Oral administration only.
Standard Daily Dose One tablet daily containing the fixed combination of 2 mg CPA and 0.035 mg EE.
Frequency Pattern Once daily for 21 consecutive days, followed by a 7-day tablet-free interval.
Daily Timing The tablet should be taken at the same time each day with some liquid to ensure a consistent dosing interval, independent of meals.

Procedural Use and Duration

Treatment begins typically on the first day of the menstrual cycle (Day 1) and continues following the 21 active day/7 tablet-free day schedule. Crucially, the subsequent pack must be started on the same day of the week as the initial pack after the 7-day break. During this course of treatment, no other hormonal contraceptives should be used.

If a tablet is missed by less than 12 hours, it should be taken immediately to maintain contraceptive protection; if missed by more than 12 hours, protection may be reduced, and specific instructions, including the use of additional non-hormonal barrier methods for seven days, must be followed based on the week the dose was missed. The medication is generally intended to be used for several months, and recommendations suggest discontinuation 3 to 4 cycles after the symptoms have completely resolved.

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Recent Clinical Evidence

Evidence for Use in Moderate to Severe Acne

Research has examined this medicine for acne that has been studied in contexts of standard treatment protocols. Studies were designed to measure changes in outcomes related to physical discomfort, tracking the number and severity of acne lesions over defined time intervals in women of reproductive age. Findings describe patterns observed in the studies where researchers monitored acne lesion counts and changes in sebum production over time, alongside tracking lower levels of circulating androgens. However, the evidence is sometimes limited by variability across studies, and long-term outcomes are not fully established. Studies documented patterns related to symptom recurrence after treatment discontinuation.

Evidence for Use in Hirsutism (Unwanted Hair Growth)

Clinical trials and systematic reviews have explored the use of this medicine for hirsutism—a condition where symptoms may vary in intensity. Research was evaluated in women presenting with hyperandrogenism, often using objective tools like the Ferriman-Gallwey score to measure hair growth. The data show patterns related to measured changes in objective hair growth scores, but this process requires an extended period of observation, often six to twelve months. A key challenge is that many trials had sample sizes that were modest, and follow-up durations were limited relative to the time needed to fully observe symptom evolution.

Evidence for Use in Symptoms Related to Polycystic Ovary Syndrome (PCOS)

The medicine was studied for women with PCOS. The research examined skin-related symptoms (acne and hirsutism), and tracked how the medicine affected menstrual cycle regularity and the overall biochemical profile of androgens. Trial measurements tracked biochemical markers of androgen excess, such as the Free Androgen Index (FAI). Findings indicate patterns related to changes in menstrual cycle regularity in the observed populations. However, the certainty remains low for some claims, and comparative evidence is lacking regarding the medicine’s broad impact on all potential metabolic outcomes. Subgroup findings are uncertain for specific populations.

Long-Term Observation and Follow-up in Research

Most clinical trials research explored short-term symptom changes, focusing on periods up to six or twelve months. Long-term effects are not fully established based on the primary clinical trial data. While studies were observed in some settings for up to two years, comprehensive data describing the sustained maintenance of observed symptom patterns over many years are still emerging.

Evidence Gaps and Uncertainties in the Research Landscape

The available research contributes to the broader evidence landscape, but experts routinely point out several areas of uncertainty. Evidence quality varies across studies, particularly older ones, which often had sample sizes that were modest. A major research limitation frame is that comparative evidence is lacking in some areas, making it difficult to understand the evidence when comparing this medicine to other approaches for androgen-driven symptoms. The results apply only to the populations studied, meaning findings describe group patterns, not personal outcomes.

Key Studies & References

  1. WHO ATC Code G03HB01 - Cyproterone and estrogen
  2. Cyproterone and Ethinyl Estradiol (Oral Route) Drug Information - NIH MedlinePlus
  3. DIANE-35 (Cyproterone Acetate/Ethinyl Estradiol) Product Monograph (Health Canada)
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Frequently Asked Questions (FAQ)

Common questions about Диане 35 (FAQ)


Q: Is Диане 35 mainly for contraception or for skin/hair issues?

Official regulatory documents authorize this medicine for treating moderate to severe acne and/or hirsutism (unwanted hair growth) that is related to androgen-sensitivity, in women of reproductive age. Since the medicine is a hormonal combination, it also provides contraception. However, it is officially specified that the medicine should not be prescribed solely for the purpose of contraception.


Q: Why is Диане 35 prescribed when other birth control pills exist?

Official authorization limits the use of this medicine for acne only after other treatments, such as topical therapies or systemic antibiotics, have failed. This indicates its role as a therapy for specific conditions where androgen activity is a factor. Its composition includes an antiandrogen component, which is why it is used for these specific indications, unlike standard pills.


Q: Does Диане 35 work differently from standard combined oral contraceptives?

Yes, it works differently due to the inclusion of Cyproterone Acetate, which acts as a potent antiandrogen. While both types of pills suppress ovulation for contraception, this specific medicine also works by blocking the effects of male hormones (androgens) on target tissues like the skin. This dual action is key to treating the underlying androgen-related symptoms.


Q: How quickly can I expect to see an improvement in acne or hirsutism after starting Диане 35?

Official information indicates that changes in acne and seborrhea symptoms are typically observed after at least three months of continuous use. Treating hirsutism, which involves hair growth cycles, is a slower process and generally requires an extended duration of treatment, often six months or more, before changes become noticeable.


Q: Is it normal to experience changes in bleeding patterns when on Диане 35?

Yes. Official product documentation acknowledges that during the use of this medicine, especially during the first few cycles, a woman may experience breakthrough bleeding or spotting (bleeding that occurs outside of the scheduled tablet-free days). Irregular tablet intake is also noted as a factor that can lead to unexpected bleeding.


Q: Is breakthrough bleeding a common issue when starting Диане 35?

Breakthrough bleeding or spotting may occur when starting this medicine, and it is acknowledged in official product information as a possibility. This is generally related to the body adjusting to the hormonal content of the medicine.


Q: Why does the packaging for Диане 35 include a 7-day break?

The medicine is designed for a cyclic regimen, which involves 21 days of active tablets followed by a 7-day tablet-free interval. This schedule is intended to allow for withdrawal bleeding (similar to a menstrual period) to occur. This cyclic regimen is designed to provide hormone suppression while still adhering to a schedule that allows for a monthly bleed.


Q: Does the time of day I take Диане 35 matter?

Regulatory administration guidelines state the tablet should be taken at approximately the same time each day to ensure consistent dosing and maintain hormone levels necessary for both therapeutic effect and contraceptive protection.


Q: What are the signs of a serious side effect, according to the official product information?

The official product information instructs patients to seek immediate medical attention if they experience signs of a serious event like a blood clot. This includes unusual pain or swelling in the legs, sudden severe chest pain or shortness of breath, or sudden severe headache or vision/speech disturbances.


Q: Are there any specific official warnings about using Диане 35 close to surgery?

Due to the increased risk of blood clots during major surgery or prolonged immobilization, official documentation indicates the medicine is recommended to be discontinued for at least four weeks before and through two weeks after any major elective surgery.


Q: Why is smoking while using Диане 35 considered a risk?

Smoking, especially in women over 35, significantly increases the risk of serious cardiovascular side effects like heart attack and stroke that are associated with the medicine's hormonal content. Official guidance cites this combined risk as the basis for the absolute contraindication in smokers over 35.


Q: Can women over 35 use Диане 35 safely?

The medicine is strictly contraindicated for women over 35 years old who smoke due to an officially documented high risk of serious cardiovascular events. For non-smoking women over 35, official documentation suggests the decision to prescribe requires a careful benefit-risk assessment by a physician, as age is a general risk factor.


Q: Can I use Диане 35 if I have a history of migraines?

This medicine is contraindicated for patients who have a history of migraine with focal neurological symptoms (migraine with aura), which is associated with an increased risk of stroke. Patients with a history of migraines without aura must be individually assessed by a physician.


Q: Can people with diabetes safely use Диане 35?

Official labeling requires caution for patients with diabetes mellitus. The hormonal components of the medicine may influence glucose tolerance and require special medical monitoring. A severe form of diabetes with vascular complications is listed as a contraindication.


Q: Why is grapefruit juice sometimes mentioned in relation to drug interactions with pills like Диане 35?

While the product label may not specifically name grapefruit juice, official documents describe interactions with substances that affect Cytochrome P450 (CYP) enzymes in the liver. Grapefruit juice contains compounds that can influence these enzymes, which may be associated with an increase in the plasma concentration of the ethinyl estradiol component.


Q: How long does the contraceptive protection last after stopping Диане 35?

The hormonal effects of the medicine are designed to be fully reversible. Once the treatment is discontinued, fertility is expected to return. While the time taken for a regular menstrual cycle to resume can vary, fertility is widely expected to return after the medicine is stopped.


Q: Does Диане 35 have any impact on future fertility?

The medicine's effects on ovulation are designed to be fully reversible, and fertility is widely expected to return once the medicine is stopped. Official information does not indicate a risk of long-term infertility.


Q: Is it necessary to take a break from Диане 35 after using it for a long time?

Official guidance suggests that after symptoms have completely resolved, treatment should be continued for an additional three to four cycles. The need for further use should then be evaluated periodically by a physician.


Q: What is the official information regarding the discontinuation of Диане 35?

Official guidance states that the medicine should be discontinued 3 to 4 cycles after the treated symptoms (such as acne or hirsutism) have completely resolved. The patient must be evaluated by a physician to determine if continued use is needed or if alternative management is appropriate.


Q: How is the acne-improving effect of Диане 35 explained in official documents?

The effect is attributed to a dual mechanism of action. The antiandrogenic component (cyproterone acetate) blocks the effects of male hormones in the skin, and the combination's hormonal action reduces the circulating levels of male hormones in the bloodstream. This combined approach targets the underlying cause of the symptoms.


Q: Are there different versions or generic equivalents of Диане 35 available?

Yes. The fixed combination of cyproterone acetate and ethinyl estradiol is recognized by regulatory bodies and medical literature. The generic equivalent is often referred to in some jurisdictions as co-cyprindiol.


Q: Are there any long-term health concerns associated with using Диане 35 for many years?

The prescribing information notes that treatment should be evaluated periodically by a physician, as the medicine is generally intended for short-term use. Concerns regarding vascular risk and other serious events are monitored during the entire period of use, with the highest risk for venous thromboembolism documented during the first year.

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How should Диане 35 be stored and disposed of?

How to Store and Dispose of Diane-35

The official labeling for Diane-35 (Cyproterone Acetate/Ethinylestradiol) specifies storage conditions necessary to maintain the stability of the medicine.

Storage Requirements

The tablets must be stored below 25°C (77°F) and kept in a cool, dry place. The medicine should be stored in the original package or blister pack and protected from excessive heat, moisture, and direct light.

Storage Classification Requirement
Temperature Limit Below 25°C (77°F)
Container Rule Keep in original blister pack
Safety Rule Keep out of the sight and reach of children

Disposal Instructions

To comply with regulatory guidance and prevent environmental contamination, unused or expired Diane-35 must not be discarded in household garbage or flushed down the toilet or sink (wastewater). The official instruction is to return the unused or expired product to a pharmacist for proper disposal as pharmaceutical waste.

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

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