Регулон

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Регулон

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Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

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

Overview of Регулон

What is Регулон? (Regulon: Identity and Purpose)

Property Description
Active ingredient Desogestrel and Ethinyl Estradiol
Form Coated Oral Tablets
Pharmacological class Combined Hormonal Contraceptive
Common use Prevention of pregnancy (Contraception)
Origin Synthetic

Регулон: What type of medicine is it and what class does it belong to?

Регулон is a contraceptive agent classified as a Combined Hormonal Contraceptive (CHC) for systemic use, intended for oral administration. The product is a fixed-dose combination containing two synthetic hormonal components. It is clinically recognized as a monophasic oral contraceptive, meaning the active ingredients maintain the same concentration throughout the pill-taking schedule. It is typically available only with a prescription (Rx status) and is a recognized brand in several international markets.

Active Components and Dosage Form

The composition of Регулон includes two main components: Desogestrel and Ethinyl Estradiol. Desogestrel is characterized as a third-generation progestogen, while Ethinyl Estradiol serves as the synthetic estrogen component. The drug is consistently manufactured in the form of coated oral tablets, ensuring convenient internal administration. This specific combination is found in established pharmaceutical profiles globally.

General Purpose of Регулон: What is its main goal?

The general purpose of Регулон is to provide women with a reliable, non-surgical method of preventing pregnancy, achieved through complex contraceptive action. The primary physiological action involves inhibition of ovulation (preventing egg release) and altering the state of the cervical mucus, making it significantly more viscous and difficult for sperm to penetrate. These mechanisms, working together, ensure high contraceptive efficacy, which is a recognized role of this pharmacological class.

Regulatory References

  1. official drug information

What side effects are possible with Регулон?

Safety Profile: Possible Side Effects and Contraindications

The safety profile for Regulon (a combination of ethinylestradiol and desogestrel) includes a range of adverse reactions, primarily categorized by frequency and the body system affected. All safety information is based on formal regulatory documentation.

Clinically Significant and Serious Adverse Reactions

The most serious documented risk is the potential for venous and arterial thromboembolic events (VTE and ATE), including deep vein thrombosis, pulmonary embolism, myocardial infarction, and stroke. These events are classified as rare but pose a significant health risk. The risk of VTE is highest during the first year of use or upon restarting after a break of four weeks or more.

Additional serious or clinically relevant adverse reactions documented in regulatory sources include:

  • Hepatic Neoplasia: The development of benign liver tumors (hepatic adenomas), and in extremely rare cases, malignant tumors (hepatocellular carcinoma), which may lead to life-threatening intra-abdominal hemorrhage.
  • Vascular Disorders: New onset or exacerbation of arterial hypertension.
  • Malignancies: An increased risk of cervical cancer and a slightly increased relative risk of breast cancer in current users has been reported in epidemiological studies.

Common Adverse Reactions

Adverse reactions that are reported as common (1/100 to < 1/10) include:

  • Nervous System: Headaches (including migraine), dizziness, and depressed mood.
  • Gastrointestinal: Nausea, vomiting, and abdominal pain.
  • Reproductive/Breast: Breast tenderness and pain.
  • Metabolic: Weight gain and fluid retention.

Key Safety Limitations and Restrictions

Regulon is absolutely contraindicated in individuals with a current or history of thromboembolic disorders, known hereditary or acquired predispositions for VTE/ATE, uncontrolled hypertension, severe liver disease, or known or suspected hormone-dependent malignancies. A thorough medical history and physical examination are mandatory prior to initiation to screen for risk factors, especially those related to thromboembolism. Immediate discontinuation is required if signs of a thromboembolic event, jaundice, or significant blood pressure increase occur.

Overdose and Emergency Response

Official Overdose Manifestations

The officially documented clinical manifestations of an acute overdose of Регулон (Desogestrel and Ethinyl Estradiol) are specifically detailed within regulatory prescribing information. The reported acute effects may involve the gastrointestinal and reproductive systems. These clinical findings include nausea and vomiting as common symptoms. A characteristic manifestation of acute exposure is withdrawal bleeding, which may present as slight vaginal bleeding. This profile reflects the known effects of high estrogen and progestin exposure.

Severity Assessment and Mandated Emergency Response

The official regulatory assessment of acute overdose severity is consistent across authorized labeling. Regulatory documents state unequivocally that no serious harmful effects have been reported following acute ingestion of large doses of the active ingredients. This classification indicates that the acute risk profile is generally considered non-life-threatening.

Notwithstanding the non-serious classification of acute symptoms, the official regulatory guidance mandates a clear and immediate action. If a Регулон overdose is suspected, it is a regulatory requirement to seek immediate medical assistance or contact emergency services. Management is strictly defined as symptomatic and supportive, as no specific antidote is known for this combination. Furthermore, official documentation notes that slight vaginal bleeding has been a reported manifestation in cases of accidental ingestion by young girls (pre-pubertal females).

Therapeutic Uses of Регулон

Регулон may be used as a method of pregnancy prevention for patients who require hormonal management. Beyond this primary role, it is relevant for patients who require hormonal management as it may assist with promoting more predictable, stabilized menstrual patterns, which is relevant for patients dealing with long-term cycle irregularity or unpredictable bleeding patterns.

Symptomatic Relief for Heavy and Painful Periods

The medication helps address symptom clusters that create noticeable physiological strain, and is applied in addressing heavy menstrual flow (menorrhagia) and helps manage pronounced menstrual pain (dysmenorrhea). It is also commonly used to help manage symptoms that interfere with daily functioning, such as those associated with premenstrual distress. This provides supportive relief that helps ease the overall symptom burden. It contributes to easing the overall symptom load during difficult episodes.

Management of Hormonal Skin and Hair Issues

Регулон is applied within clinical settings that involve acute or unstable symptom patterns for physical symptoms related to systemic imbalance, such as persistent acne and unwanted excessive hair growth (hirsutism). Using the medication supports comfort during periods of heightened symptoms, as it contributes to the management of androgen-related skin and hair symptoms.

Quick Fact: Relief for Cycle Distress The medication is commonly used across conditions presenting with recurrent or episodic manifestations to help establish cycle stability and reduce the intensity of associated symptoms.

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Регулон (desogestrel/ethinyl estradiol) is a combined oral contraceptive indicated exclusively for females of reproductive potential for the prevention of pregnancy. It is subject to strict eligibility rules documented in official regulatory labeling.

Contraindicated Populations (Must Not Use)

Use is contraindicated in women with a history of or current venous or arterial thromboembolic disorders (e.g., Deep Vein Thrombosis, Pulmonary Embolism, Myocardial Infarction, Stroke) or known thrombophilic conditions (acquired or inherited).

It is also prohibited for women with specific severe medical conditions, including:

  • Uncontrolled or very high blood pressure (e.g., ge 160 mmHg systolic or ge 100 mmHg diastolic).
  • Diabetes mellitus with vascular damage.
  • Liver tumors or severe liver disease.
  • Breast cancer or other known or suspected hormone-sensitive cancers.
  • Migraine with focal neurological symptoms (aura).

Specific Eligibility Restrictions

Category Regulatory Status
Age and Smoking Contraindicated for women over 35 years of age who smoke.
Pregnancy Contraindicated (known or suspected).
Lactation/Breastfeeding Not Recommended (may decrease milk production).
Post-Surgery Must be discontinued before major surgery or prolonged immobilization.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Interactions involving Регулон (desogestrel/ethinylestradiol) primarily affect its contraceptive effectiveness or alter the concentration of co-administered medications.

Reduction of Contraceptive Efficacy

Many interactions are pharmacokinetic, resulting in a reduced plasma concentration of the contraceptive hormones due to increased clearance. This is typically caused by drugs that are hepatic enzyme inducers, which speed up the breakdown of the hormones in the liver. These agents can lead to breakthrough bleeding and potential contraceptive failure.

  • Enzyme-Inducing Medicines: Specific medicines documented to cause this interaction include certain anticonvulsants (e.g., Phenytoin, Carbamazepine, Phenobarbital), the antibiotics Rifampicin and Griseofulvin, and the herbal remedy St. John's Wort (Hypericum perforatum).
  • Management: When co-administering with these enzyme-inducing agents, regulatory guidance requires the use of an additional non-hormonal barrier method during the course of treatment and for 28 days after stopping the interacting medicine.

Other Significant Interactions

  • Hepatitis C Virus (HCV) Regimens: The combined oral contraceptive is contraindicated for use with drug combinations containing Ombitasvir/Paritaprevir/Ritonavir with or without Dasabuvir, due to the significant risk of ALT enzyme elevations.
  • Effect on Other Medicines: The contraceptive itself can inhibit or induce the metabolism of other drugs, potentially increasing the concentration of medicines like Cyclosporine, or decreasing the concentration of others, such as the anti-epileptic drug Lamotrigine.

Mechanism of Action

Регулон, a combination preparation of desogestrel and ethinyl estradiol, modulates the hypothalamic-pituitary-ovarian axis via a negative feedback loop. Desogestrel, a prodrug, is rapidly metabolized to its active metabolite, etonogestrel, which acts as a potent agonist at the progesterone receptor (PR). Ethinyl estradiol functions as an agonist at the estrogen receptor (ER).

The system-level physiological consequence of sustained progestin and estrogen exposure is the suppression of gonadotropin-releasing hormone (GnRH) pulse frequency in the hypothalamus. This upstream inhibition consequently reduces the pituitary secretion of follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The suppression of FSH prevents the development of a dominant ovarian follicle, and the absence of a mid-cycle LH surge precludes follicular rupture, inhibiting ovulation.

Downstream cascades also involve local genital tract changes. Etonogestrel induces changes in the cervical mucus, increasing its viscosity and impeding sperm progression. Furthermore, the combination alters the endometrium, rendering the uterine lining less receptive to the attachment of an ovum.

Dosage and Administration Information

Instruction Map: How to use Регулон — Official Administration Guidelines

This section details the official administration protocol for Регулон (Desogestrel 0.15 mg / Ethinyl Estradiol 0.03 mg) tablets.

Instruction Entity Detail
Route of administration Oral
Dosing schedule One tablet daily using a 28-day cyclic regimen: 21 consecutive days of active tablets followed by a 7-day tablet-free or placebo interval
Timing in relation to meals May be taken with or without food and with a small amount of liquid, if needed
Preparation requirements Tablets should be taken whole, in the sequential order directed on the packaging
Age-group administration rules The medication is not indicated for use in postmenopausal women. Specific initiation timing applies to the postpartum population
Missed-dose rules Specific, time-dependent instructions apply for missed active tablets that define the required remedial action
Special procedural conditions Tablets must be taken at the same time each day to maintain the standardized schedule

Instruction Classifications (High-Level)

Classification Entity Detail
Administration method type Oral
Frequency pattern Daily (Continuous, cyclic dosing)
Use-context constraints The hormone-free interval must not be extended beyond 7 days; a non-hormonal barrier method is required for the first 7 days if the initial dose is not started on Day 1 of the menstrual cycle

Resulting Procedural Structure

Official step sequence:

  • Initiate the pack by taking the first active tablet on Day 1 of the menstrual cycle (the first day of bleeding).
  • Consume one active tablet daily for 21 consecutive days, ensuring administration is done at the same time of the day.
  • Follow the 21 active days with the mandatory 7-day tablet-free or placebo interval.
  • Start a new pack immediately after the 7-day interval is complete.

Connection to the overall use protocol: The official administration protocol defines a structured 28-day cycle requiring continuous, sequential tablet intake with a brief, non-extendable hormone-free period. This standardized approach mandates precise timing and order of consumption and establishes specific rules for initiating treatment and managing missed doses.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Регулон

The available research evidence for Регулон (a combined oral contraceptive containing desogestrel and ethinyl estradiol) involves studies of pregnancy prevention, alongside several secondary contexts related to menstrual and hormonal health. Research is based on official clinical evaluations and peer-reviewed scientific literature.


Evidence for Use in Preventing Pregnancy

Research examining this medication primarily relies on large-scale Randomized Controlled Trials (RCTs) and ongoing Observational Cohort Studies. Researchers monitored outcomes by measuring the Pearl Index, which tracks pregnancies among groups of users over defined time intervals. This outcome was studied for its use in pregnancy prevention.

The findings describe patterns observed in the studies related to the contraceptive reliability that was measured. The collected data show patterns related to Pearl Index values that are consistent with the outcomes reported in the broader evidence landscape for low-dose combined oral contraceptives. Limited information is available for very specific subgroups, and results apply mainly to the healthy populations studied.


Evidence for Regulating the Menstrual Cycle and Pain

Research has also explored the use of this formulation in evaluating conditions characterized by fluctuating or episodic manifestations related to menstruation. Studies examined patient-reported experiences for heavy menstrual flow (menorrhagia) and pronounced menstrual pain (dysmenorrhea).

For heavy menstrual flow, comparative trials were conducted focusing on outcomes measuring the total volume of menstrual blood loss and the duration of bleeding days. Research describes patterns observed in the studies related to the regularity of cycle bleeding, with findings describing changes in the total volume of blood loss over several cycles of use. For menstrual pain, findings suggesting that pain intensity was observed to vary during treatment.

Data are still emerging regarding the long-term effects of this medication on these secondary uses, and comparative evidence against every other available treatment option is often lacking.


Evidence for Managing Hormonal Skin and Hair Issues

This formulation was also evaluated in studies examining outcomes related to persistent acne and excessive hair growth (hirsutism). For acne, research examined changes in total lesion counts and physician-rated severity scores over time. For excessive hair growth, outcomes were measured using standardized scoring systems like the Modified Ferriman-Gallwey Score.

Studies observed responses over defined time intervals, with findings describing patterns related to changes in measured lesion counts and physician-rated severity scores over a six-month period. Due to the nature of hair growth, follow-up durations were often lengthy, extending to nine to twelve months to capture the full cycle of change.


Evidence Gaps and Areas of Uncertainty in Research

One key limitation is that results apply only to the populations studied, which are typically healthy adult women. Comparative evidence is lacking for several subgroups, and data are still emerging regarding the full spectrum of outcomes in women with pre-existing or comorbid conditions. The available evidence contributes to understanding group patterns, but research does not determine whether an individual will respond similarly.

Key Studies & References

  1. Heavy menstrual bleeding: assessment and management – NICE Guideline (NG88)

Frequently Asked Questions (FAQ)

Common questions about Регулон (FAQ)


Q: Is the hormone dose in Регулон considered low-dose according to medical standards?

A: According to official product information, the medication contains 0.03 mg of Ethinyl Estradiol (EE). In hormonal contraceptive classification, formulations containing 35 mu g or less of EE are generally described in medical literature as low-dose.

Q: What are the common signs of a serious but rare side effect, such as venous thromboembolism (VTE), associated with Регулон?

A: Regulatory documents state that symptoms of a blood clot (VTE) can include sudden pain, swelling, tenderness, or warmth in one leg, or sudden shortness of breath and sharp chest pain. These symptoms are recognized as serious warning signs potentially related to VTE and should be promptly evaluated by a healthcare professional.

Q: Does Регулон have any known long-term effects that are described in the regulatory literature?

A: Studies and official information indicate that long-term use of combined oral contraceptives is associated with a reduced lifetime risk of ovarian and endometrial cancer, with the protective effects often lasting after discontinuation. Conversely, there is an associated slightly increased, but temporary, risk reported for breast and cervical cancer in current users.

Q: Does official guidance suggest that alcohol consumption can impact the effectiveness of Регулон?

A: Official guidance indicates that alcohol does not directly interfere with the chemical composition of the hormones. However, heavy alcohol use leading to vomiting shortly after taking a tablet (e.g., within three to four hours) may prevent full hormone absorption and thus reduce effectiveness.

Q: How long does it typically take for the contraceptive effect of Регулон to begin, as per clinical information?

A: Official guidance states that starting the pill on the first day of the menstrual period is associated with immediate contraceptive efficacy. If the pill is started later, protection is generally considered reliable after taking active tablets for 7 consecutive days.

Q: Why is there a hormone-free or placebo tablet period in the standard usage cycle?

A: The 21-day active tablet cycle followed by a 7-day break is the conventional dosing schedule designed to mimic a natural 28-day cycle and induce a predictable withdrawal bleed. This allows the user to monitor for bleeding, which traditionally confirms the absence of pregnancy.

Q: Is it expected to experience spotting or breakthrough bleeding when a person first begins taking Регулон?

A: Official side effect profiles indicate that spotting or breakthrough bleeding (bleeding between the scheduled withdrawal bleeds) is a common occurrence. This is particularly frequent during the initial months of use as the body adjusts to the hormonal changes, and it often lessens over time.

Q: What happens to the menstrual cycle and fertility after a person stops taking Регулон?

A: The contraceptive effect is fully reversible upon stopping the medication. Most women resume their natural menstrual cycles and can become pregnant within a few months of discontinuation, as the pill does not cause permanent infertility.

Q: Why is a history of blood clots or VTE a key contraindication for this type of medication?

A: A history of blood clots (VTE) is a critical contraindication because the estrogen component of the pill can increase the body's risk of developing blood clots (thrombosis), which is compounded by any existing predisposition.

Q: Does the documentation discuss how body weight might influence the use of Регулон?

A: The official documentation may note that a high Body Mass Index (obesity) is a general risk factor that increases the overall baseline risk of VTE. This is a key safety consideration when taking combined hormonal contraceptives. Most evidence does not indicate a significant impact on contraceptive effectiveness based solely on body weight.

Q: What is the difference between Регулон and a progestin-only contraceptive pill?

A: Регулон is classified as a combined oral contraceptive because it contains two types of hormones: a progestin (desogestrel) and an estrogen (ethinyl estradiol). In contrast, a progestin-only pill, sometimes called a mini-pill, contains only the progestin component.

Q: Is the risk of VTE associated with Регулон higher or lower than the risk during pregnancy?

A: Official safety data and research summaries indicate that the risk of VTE (blood clots) in a person using a combined oral contraceptive is significantly lower than the risk of VTE during pregnancy and the immediate postpartum period.

Q: What is the recommended approach if a person misses a regular cycle 'withdrawal bleed' while taking Регулон?

A: According to official instructions for use, if a user adheres to the dosing schedule but misses a withdrawal bleed, the possibility of pregnancy must be considered. In such cases, taking diagnostic measures, such as a pregnancy test, may be advised before initiating the next cycle of tablets.

Q: Is there any evidence that Регулон has a protective effect against certain health conditions, as described in research summaries?

A: Research cited in product literature indicates that the use of combined oral contraceptives may be associated with a reduced lifetime risk of developing ovarian and endometrial cancer.

Q: What makes the specific combination of hormones in Регулон unique compared to other combination pills?

A: The pill contains desogestrel, which is classified as a third-generation progestogen. This specific combination (desogestrel and ethinyl estradiol) distinguishes its hormonal components from combinations using progestogens of other generations.

Q: Can Регулон be used continuously without the hormone-free interval for cycle manipulation, based on research themes?

A: Combined oral contraceptives are sometimes used in an extended or continuous regimen, which involves skipping the hormone-free interval (placebo pills) to intentionally reduce or eliminate the frequency of withdrawal bleeding.

Q: Is there a mention of hair loss or changes in hair growth in the product's official side effect profile?

A: The official side effect profile includes mentions of dermatological changes. Specifically, there are reports of the rare occurrence of both hair loss (alopecia) and excessive hair growth (hirsutism) associated with the use of this type of medication.

Q: Are there descriptions of how Регулон might affect laboratory test results for other conditions?

A: Official product information notes that the hormonal components can influence the results of certain laboratory tests. These tests may include those for liver, thyroid, adrenal, and renal function, as well as blood coagulation factors.

Q: What advice is commonly given regarding use of Регулон if a person experiences vomiting or severe diarrhea?

A: Vomiting or severe diarrhea may prevent complete hormone absorption. Regulatory guidance indicates that if this occurs within three to four hours of taking an active tablet, the situation is treated similarly to a missed dose, and using a backup contraceptive method may be necessary.

Q: Is there a defined limit on how many years a person can use Регулон according to regulatory guidance?

A: Regulatory guidance does not state a defined maximum number of years for continuous use of the medication. The appropriateness of continued use relies on regular risk assessment and safety monitoring performed by a healthcare professional.

Q: Is Регулон primarily used only for preventing pregnancy?

A: While the main regulatory purpose and primary indication is the prevention of pregnancy, the medication is also commonly used by healthcare providers. These non-contraceptive uses include managing painful or heavy periods (dysmenorrhea) and treating acne.

Q: Do common antibiotic classes generally affect how Регулон is described to work?

A: Official information confirms that only a few antibiotic classes, such as Rifampicin or Griseofulvin, are confirmed enzyme-inducing drugs that significantly reduce contraceptive effectiveness. The interaction with most other common broad-spectrum antibiotics is generally considered controversial in clinical practice.

How should Регулон be stored and disposed of?

How to Store and Dispose of Regulon?

This section summarizes the official storage and disposal requirements based on authoritative regulatory documentation.

Official Storage Requirements

Constraint Requirement
Temperature Store below 30 C (some sources specify below 25 C); Do not refrigerate or freeze.
Protection Keep the blister pack in the original outer carton to protect the tablets from light and moisture.
Handling Must remain in the original packaging until the time of use.
Safety Keep this medicine out of the sight and reach of children.

Official Disposal Instructions

Regulon must be disposed of according to official guidelines to prevent environmental contamination. Do not dispose of this medicine via household waste or wastewater (e.g., do not flush). Unused or expired medication should be returned to a pharmacist or collected via a local medicine take-back program for safe disposal.

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

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Equivalent of Регулон found in:

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