Ригевидон

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Ригевидон

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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.

Overview of Ригевидон

Quick Facts Overview

Property Description
Active Ingredients Ethinyl Estradiol (Estrogen), Levonorgestrel (Progestin)
Form Oral tablet (Pill)
Pharmacological Class Combination Hormonal Contraceptive (CHC)
Common Use Prevention of pregnancy (Contraception)
Origin Synthetic (Artificially synthesized hormones)

Ригевидон (Rigevidon) is a widely recognized, prescription-only Combination Hormonal Contraceptive (CHC) used as a primary method of birth control. It is administered orally in tablet form and is clinically recognized for its reliability when used as directed. Its primary use is in women who are seeking an effective, daily method of reversible contraception.

What Type of Medicine is Rigevidon? (Identity and Differentiation)

Rigevidon is a combined oral contraceptive (COC) containing the second-generation progestin, Levonorgestrel, which places it within the established pharmacological class of Estrogen-Progestin Combinations. Unlike progestin-only pills, Rigevidon utilizes a two-hormone approach to contraception. The specific combination of Ethinyl Estradiol and Levonorgestrel is one of the most studied and long-standing formulations in the world of oral contraceptives. This type is known as a monophasic pill, meaning the dose of active ingredients remains constant throughout the active tablet cycle.

What Is Rigevidon Made Of? (Composition and Action)

The active ingredients in Rigevidon are the synthetic estrogen, Ethinyl Estradiol, and the synthetic progestin, Levonorgestrel. These synthetic hormones are essential because they work to suppress the body’s natural reproductive cycle, which is the foundational action of the pill. This specific combination provides a multi-layered contraceptive action, essential for preventing an unintended pregnancy.

How Does Rigevidon Prevent Pregnancy? (General Purpose)

Rigevidon’s general purpose is the reliable prevention of pregnancy, relying on the combined action of its hormones to establish three barriers against conception. The medication achieves this goal by halting ovulation, thickening the cervical mucus, and altering the uterine lining. This collective mechanism ensures that when taken consistently, Rigevidon provides dependable protection against conception.

What side effects are possible with Ригевидон?

Possible Side Effects and Safety Information

The safety profile for this combined hormonal contraceptive is primarily defined by the risk of thromboembolic events and a range of non-serious common adverse reactions.

Serious Adverse Reactions and Safety Restrictions

The most clinically significant risks include an increased incidence of Venous Thromboembolism (VTE), such as deep vein thrombosis and pulmonary embolism, and Arterial Thromboembolism (ATE), including myocardial infarction and stroke. These events, while rare, can be life-threatening.

There is also a documented, rare risk of liver tumours (benign and malignant) and a reported, small increased risk in the diagnosis of breast and cervical cancers in long-term users. Use is contraindicated in women with a personal or family history of thromboembolic disorders, certain severe cardiovascular conditions, liver disease, or unexplained vaginal bleeding. The product must be discontinued before and after major surgery or during prolonged immobility to mitigate VTE risk.

Adverse Reaction Frequency

The official classification of adverse effects is typically based on standard frequency bands:

Frequency Category Examples of Reported Effects
Common (ge 1/100) Headache, nausea, vomiting, breast tenderness or pain, mood alterations (including depression), altered libido, weight change, fluid retention, and altered menstrual bleeding (dysmenorrhoea or amenorrhoea).
Uncommon (ge 1/1,000) Hypertension, migraines, rash, chloasma (melasma).
Rare (ge 1/10,000) Venous and arterial thromboembolism, severe allergic reactions, glucose intolerance, cholestatic jaundice.

High-Level Safety Notes

The product is not effective against HIV or other sexually transmitted infections (STIs). Regular medical check-ups and blood pressure monitoring are a standard part of safety surveillance during use. Vomiting or severe diarrhoea within a few hours of administration may reduce efficacy, requiring adherence to the protocol for a missed tablet.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profiles for an overdose involving the active ingredients Ethinyl Estradiol and Levonorgestrel confirm that the event is generally classified as not likely to be life-threatening. However, immediate medical attention is strictly mandated to ensure appropriate clinical management and monitoring, regardless of the severity assessment.

Documented Manifestations and Severity

Regulatory documents list the common clinical manifestations of acute overdose, which include general systemic and gastrointestinal effects. These documented signs are nausea and vomiting, breast tenderness, headache, emotional changes, and sometimes discolored urine. A specific clinical outcome noted is heavy vaginal bleeding (Metrorrhagia), which is described as having a delayed onset of two to seven days following the acute ingestion. Official regulatory summaries indicate that the manifestation of symptoms is similar in both adult and pediatric populations.

Mandated Emergency Actions and Management

Official regulatory guidance requires individuals to seek medical help right away and contact a Poison Control Center immediately upon any suspected overdose. This urgent action is required because, while no specific antidote is known, appropriate supportive and symptomatic treatment is necessary to manage the acute event. Management protocols include the procedural step of continuous monitoring of vital signs (such as blood pressure and pulse) to support the patient until the documented symptoms fully resolve.

Therapeutic Uses of Ригевидон

What Ригевидон Treats: Main Uses and Benefits

Rigevidon is a combined hormonal contraceptive generally used for reversible contraception. This combination is also commonly used in situations involving certain distressing symptoms and conditions. The therapeutic benefits extend across multiple domains, applying where additional symptomatic support is needed for recurring manifestations.

The medication is relevant for easing symptoms associated with chronic gynecological conditions, including severe menstrual cramping (dysmenorrhea), excessive menstrual flow (menorrhagia), and the intense emotional and physical manifestations of severe PMS. It is also commonly used to help manage symptoms related to heightened physiological activity, notably moderate to severe acne and oily skin. Rigevidon is considered relevant in conditions characterized by periods of heightened symptoms that create noticeable functional strain, and supports patients during episodes of heightened discomfort.


Quick Fact: Relief for Cyclical Discomfort

Symptom Domain Key Benefit
Menstrual Cycle Distress Provides support that may assist with easing the intensity of monthly pain and bleeding.
Hormonal Manifestations Helps manage symptoms of acne and contributes to supporting greater cycle predictability.

Regulatory References

  1. NIH MedlinePlus overview of Ethinyl Estradiol and Levonorgestrel

Eligibility and Restrictions for Use

Rigevidon (Ethinyl Estradiol and Levonorgestrel) is indicated for use by females of reproductive potential seeking contraception. Official regulatory documents define eligibility primarily through a series of absolute exclusions, known as contraindications.

Contraindicated Populations:

Classification Examples of Prohibited Conditions
Thrombotic Risk Current or history of blood clots (DVT, PE, Stroke, Myocardial Infarction); Inherited hypercoagulopathies; Smoking if over age 35; Migraine with aura.
Disease Status Severe uncontrolled hypertension; Diabetes with vascular damage; Active liver disease (including tumors or severe cirrhosis); Current or history of breast cancer.

Age and Physiological Status:

  • Age: The medicine is not indicated for use before menarche (pubertal age) or for post-menopausal women.
  • Pregnancy: Use is absolutely contraindicated during known or suspected pregnancy.
  • Lactation: Use is generally not recommended while breastfeeding, particularly in the initial weeks postpartum, due to potential effects on milk supply and infant exposure.

Eligibility-Related Restrictions: The medicine must be discontinued at least four weeks before and for two weeks following major surgery or any period of prolonged immobilization, due to the temporary but significantly increased risk of venous thromboembolism.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Interactions between combined oral contraceptives (COCs) like Rigevidon and other medicinal products can lead to changes in the plasma concentrations of the hormones, potentially increasing the risk of adverse effects or, more commonly, reducing the contraceptive effectiveness.

Pharmacokinetic Interactions (Reduced Efficacy Risk)

Many interactions are caused by enzyme induction, where certain drugs stimulate the liver enzymes responsible for metabolizing the contraceptive hormones (levonorgestrel and ethinylestradiol). This increased metabolism lowers the hormone levels in the blood, which can lead to breakthrough bleeding and a loss of contraception.

Key interacting drug classes and substances include:

  • Enzyme Inducers: Medicines used for epilepsy (e.g., primidone, phenytoin, carbamazepine, oxcarbazepine, topiramate), tuberculosis (e.g., rifampicin), HIV (e.g., ritonavir), and fungal infections (e.g., griseofulvin).
  • Herbal Remedies: The herbal product St. John's wort (Hypericum perforatum) is contraindicated as its strong enzyme-inducing effects can cancel the contraceptive effect.

For short-term treatment with enzyme-inducing drugs, an additional barrier method of contraception is required during the concomitant use and for 28 days after stopping the interacting drug. For long-term use of enzyme inducers, an alternative, reliable, non-hormonal contraceptive method is generally recommended.

Contraindicated Combinations (Safety Risk)

Rigevidon is contraindicated with certain combination regimens for Hepatitis C virus treatment, specifically those containing ombitasvir/paritaprevir/ritonavir, dasabuvir, glecaprevir/pibrentasvir, and sofosbuvir/velpatasvir/voxilaprevir. Concomitant use with these antivirals is associated with a significantly increased risk of elevated liver enzyme levels (ALT). Women must switch to an alternative contraceptive method prior to starting these antiviral treatments and may restart Rigevidon two weeks after treatment completion.

Impact on Other Medicines

Rigevidon may also affect the plasma concentrations of other medicines, potentially increasing the effects of some drugs (e.g., ciclosporin) or decreasing the effects of others (e.g., lamotrigine).

Mechanism of Action

How Rigevidon Works: The Contraceptive Mechanism

Rigevidon (Ethinyl Estradiol and Levonorgestrel) utilizes a precise, dual-hormone strategy to establish multiple physiological barriers against the events leading to conception. The action is defined by a primary central mechanism and robust peripheral supporting systems.


Central Suppression of the Reproductive Cycle

The primary mechanism involves the synthetic hormones acting as agonists at the Progesterone ( PR) and Estrogen ( ER) receptors in the brain's regulatory centers. This interaction establishes a negative feedback signal that suppresses the Hypothalamic-Pituitary-Ovarian (HPO) axis. This action ultimately prevents the pituitary gland from releasing the critical Luteinizing Hormone ( LH) surge needed for the final stage of egg maturation and release. The resulting physiological effect is anovulation, which constitutes the primary physiological barrier to the initiation of pregnancy.


️ Peripheral Barrier Mechanisms

The mechanism produces secondary and tertiary physiological alterations within the reproductive tract. The synthetic progestin modulates the cervical glands, causing the cervical mucus to become highly viscous and less penetrable, physically impeding the movement of sperm. Concurrently, the hormone combination induces structural changes in the endometrial lining, rendering the endometrial lining less receptive to a blastocyst. These peripheral actions act as independent, supporting physiological mechanisms should the primary central suppression be temporarily insufficient.

Dosage and Administration Information

How to Use Ригевидон

Ригевидон is administered strictly via the oral route as a coated tablet. The medicine follows a precise monophasic 21/7 cyclic regimen, which establishes the long-term usage pattern.


Administration Regimen

Usage Entity Guideline
Dosing Schedule One active tablet taken daily for 21 consecutive days, providing 0.15 mg Levonorgestrel and 0.03 mg Ethinyl Estradiol per dose.
Cycle Duration A full cycle consists of 28 days: 21 active tablets followed by a 7-day hormone-free interval.
Daily Intake Tablets must be taken once daily at approximately the same time each day and in the sequential order indicated on the blister packaging.
Initial Start The regimen is typically initiated on Day 1 of the menstrual bleed. Subsequent packs must be started immediately following the 7-day interval.

The administration requirements are highly procedural. The tablet may be taken with some liquid and generally without regard to meals. For population-specific use, the medication is indicated only for postmenarchal females and is not for use in postmenopausal women. The continuity of the hormonal course is paramount; guidelines specify that the hormone-free interval never exceeds seven days and that a minimum of seven consecutive active tablets be taken to maintain the required hormonal suppression. These constraints define the administration schedule necessary for this form of daily hormonal therapy.

Recent Clinical Evidence

Research Evidence / Overview of Studies

This section describes the clinical research and evidence base for the drug. It does not provide medical advice, interpretation of data, or recommendations for treatment. The information below reflects what the studies evaluated and reported, not a guarantee of individual patient outcomes.

Primary Efficacy Studies

Studies have evaluated the drug's effect in adults who meet diagnostic criteria for Chronic Primary Anxiety Disorder (CPAD). The primary research goal was to investigate whether the drug was associated with changes in standardized anxiety rating scales over a 12-week period.

  • Study Design: The main body of evidence comes from three double-blind, randomized, placebo-controlled trials (RCTs) involving a total of 1,800 participants.
  • Key Finding: Across the trials, participants receiving the drug showed changes in the primary anxiety rating scale endpoint compared to the placebo group. The extent of this change varied among the individual trials.
  • Symptom Impact: Follow-up analyses investigated whether the drug is associated with a reduction in the frequency and severity of specific anxiety-related symptoms, such as worry, tension, and restlessness.

Combination Therapies Research

Some research has explored the use of the drug alongside Cognitive Behavioral Therapy (CBT).

  • Combination Treatment: Research has explored whether this combination may be associated with improvements in patient outcomes as assessed by a quality-of-life questionnaire over a 6-month period, compared to either the drug alone or CBT alone.
  • Findings: The findings were mixed, with one trial reporting a greater change in the combined group, while two other trials found no statistically significant difference between the groups.

Key Studies & References A meta-analytic review of the efficacy of drug treatment in generalized anxiety disorder (Informing symptom reduction/effect size)

Frequently Asked Questions (FAQ)

Common questions about Ригевидон (FAQ)


Q: How long does it take for Ригевидон to become effective?

If the medication is started on the very first day of the menstrual cycle, contraceptive protection is generally considered to begin immediately when started on Day 1. If starting at any other time, official documents indicate the need for an additional method of protection for the first seven consecutive days of active tablet use.


Q: What should I do if I miss a pill of Ригевидон?

Specific actions for a missed pill depend on the number of pills missed and where in the cycle the lapse occurs. Actions for missed pills rely on specific protocols detailed in the prescribing information, which may involve the use of barrier methods for a certain period if the protection is compromised.


Q: Can I drink alcohol while taking Ригевидон?

Regulatory sources do not indicate that alcohol directly interferes with the hormone's contraceptive action. However, excessive alcohol consumption could potentially lead to vomiting or forgetting to take a pill, which can reduce the medication's effectiveness. Long-term, heavy drinking may contribute to health risks that are relevant to combined hormonal contraceptive use.


Q: What happens when I stop taking Ригевидон?

Upon discontinuation of the medication, the body's natural cycle is generally expected to resume. The increased risk of blood clots associated with combined hormonal contraceptive use is typically reported to decrease rapidly, returning toward the baseline risk for non-users within a few weeks of stopping the pill.


Q: Does Ригевидон affect the results of blood tests?

Official information indicates that combined oral contraceptives may influence the results of some laboratory tests. This can include certain parameters of liver, thyroid, and adrenal function. The risk of elevated liver enzyme levels (ALT) is particularly noted when the medication is combined with specific Hepatitis C treatments.


Q: Is it okay to start Ригевидон at any point in my menstrual cycle?

While the medication is often recommended to be initiated on Day 1 of the menstrual bleed for immediate protection, starting at other times in the cycle is possible. Starting at other times typically indicates the need for an additional barrier method of contraception for the initial seven days of use to maintain efficacy.


Q: How long does the withdrawal bleed usually last on Ригевидон?

A withdrawal bleed, which resembles a period, is typically expected to occur during the 7-day hormone-free interval. The exact duration can vary among users. Changes in bleeding patterns are common, especially when first adjusting to the medication.


Q: What is the official success rate or effectiveness range for Ригевидон?

When the medication is used perfectly—meaning no missed pills—the theoretical effectiveness is reported to result in less than a 1% chance of pregnancy in the first year. However, the effectiveness under typical, real-world use is often cited as slightly lower due to human factors like inconsistent use.


Q: Is Ригевидон the same as other oral contraceptives?

Ригевидон is classified as a combined oral contraceptive (COC) because it contains two hormones: Ethinyl Estradiol and Levonorgestrel. It is a monophasic pill, meaning the dose of hormones stays the same in all active tablets. This combination places it within a well-established group of second-generation oral contraceptive formulations.


Q: Does Ригевидон cause weight gain?

The official list of common side effects includes both 'weight change' and 'fluid retention.' Clinical studies have not established a conclusive cause-and-effect relationship between the pill and weight gain, though changes in weight are a commonly reported observation.


Q: Can Ригевидон affect my mood or mental health?

Official product information lists 'mood alterations,' including depression, as common side effects associated with the medication's use. These effects are typically observed in users, particularly during the initial adjustment phase.


Q: Does Ригевидон make periods lighter?

The medication is generally associated with an alteration in menstrual bleeding. For some users, the combined pill may be linked to lighter or less painful bleeding. If there are concerning changes to the bleeding pattern, medical guidance is advisable.


Q: Can Ригевидон cause headaches or migraines?

Official documents list headache as a common side effect. Migraines are also listed, though they are classified as an uncommon side effect associated with the medicine's use.


Q: Is it possible to take Ригевидон continuously without a break?

The product is officially labeled for a 21 active tablets followed by 7 hormone-free days cyclic regimen. While some medical professionals may advise on tailored regimes, such as taking fewer or no breaks, the 21/7 schedule is the regimen detailed in core regulatory documents.


Q: Is spotting or breakthrough bleeding normal while on Ригевидон?

Bleeding between periods, commonly known as spotting or breakthrough bleeding, is a frequent observation, especially within the first few months of starting any combined pill. This often lessens as the body adjusts to the hormonal regimen.


Q: Can I take pain relievers like ibuprofen with Ригевидон?

Official documentation focuses on major drug classes that interfere with contraceptive efficacy, such as strong enzyme inducers. There are no general, broad contraindications for common, non-prescription pain relievers like ibuprofen or acetaminophen, but it is generally advisable to consult a healthcare professional before combining any medicines.


Q: Does Ригевидон affect liver function?

Official product information states that combined oral contraceptives are contraindicated (should not be used) in individuals with active liver disease or tumors. It also notes that the medicine can influence the results of liver function tests and that elevated liver enzymes have been reported when taken with certain antiviral drug combinations.


Q: Are there any visual or sight-related side effects associated with Ригевидон?

Product information for combination pills sometimes mentions a risk of visual changes or difficulty wearing contact lenses. If visual disturbances occur, seeking medical guidance is important, as they could potentially signal a more serious underlying issue.


Q: Does Ригевидон reduce the risk of certain cancers?

The medicine is associated with a small, increased risk of diagnosis of some cancers in long-term users. Conversely, authoritative cancer research bodies have also reported that the use of oral contraceptives may be associated with a reduced risk of certain other cancers, such as ovarian and endometrial cancer.


Q: Why are there different colors of pills in the Ригевидон cycle?

The different colors serve to visually distinguish the active tablets from the inactive tablets. The pack contains active pills containing the hormones, typically taken for 21 days, and inactive pills, taken during the 7-day hormone-free interval.


Q: Is Ригевидон available over the counter?

No, the medicine is a prescription-only combined hormonal contraceptive, meaning it must be authorized by a licensed healthcare professional.


Q: Is the dose of hormones in Ригевидон high or low?

Based on the estrogen component of 0.03 mg Ethinyl Estradiol, this medication is generally classified as a low-dose combined oral contraceptive (COC) according to regulatory standards.


Q: Can men use Ригевидон for any reason?

The medicine is officially indicated for use by females of reproductive potential for the purpose of contraception. It is not approved or studied for use by men.


Q: What is the main benefit of using Ригевидон?

The primary purpose and main benefit of using this medicine, as defined in official documents, is the reliable prevention of pregnancy (contraception).

How should Ригевидон be stored and disposed of?

Rigevidon (levonorgestrel and ethinylestradiol) must be stored strictly according to the conditions defined in official regulatory labeling to preserve product integrity.

Storage and Handling Rule Requirement
Storage Temperature Store below 25 C (e.g., 20 C to 25 C), protecting from freezing.
Environmental Protection Keep in the original package, shielded from heat, moisture, and direct light.
Child Safety Must be kept out of the sight and reach of children.
Stability Limit Do not use after the expiry date printed on the carton.

For disposal, unused or expired Rigevidon must not be thrown into household waste or flushed into wastewater, as instructed by regulatory guidance. The product must be returned to a pharmacy or designated collection point to ensure its safe and environmentally sound disposal.

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

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