Harmonet BCNFarma

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Harmonet BCNFarma

Medically reviewed

Laura Arias

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 Harmonet BCNFarma

Property Description
Active ingredients Ethinyl Estradiol (Estrogen), Gestodene (Progestogen)
Form Coated Tablet (Oral)
Pharmacological Class Combined Hormonal Contraceptive (CHC)
Common Use Hormonal Contraception / Pregnancy Prevention
Origin Synthetic Hormones

What Type of Medicine is Harmonet BCNFarma?

Harmonet BCNFarma is defined as a combined hormonal contraceptive (CHC), a prescription-only oral preparation utilized for pregnancy prevention in women of reproductive age. As a synthetic product, it falls under the pharmacological class of sex hormones and modulators of the genital system. It is presented as a coated tablet, intended for oral administration. The effectiveness of CHCs in preventing unintended pregnancies has been consistently confirmed across broad reviews of this class of medication.

This combination pill is clinically recognized for its high efficacy in preventing conception through a multi-tiered mechanism, serving as a primary, intended use to provide a reliable, reversible method of hormonal contraception.

Composition: Ethinyl Estradiol and Gestodene

The active ingredients in Harmonet BCNFarma are the synthetic hormones Ethinyl Estradiol and Gestodene, confirming its identity as a combination product. The formulation is characterized by its use of Gestodene, which is recognized as a third-generation progestogen, distinguishing it from combinations utilizing older or chemically different progestins.

The combined use of an estrogen and a progestogen ensures a strong, synergistic effect on the reproductive cycle. The efficacy and predictable cycle control offered by ethinyl estradiol and gestodene combinations have been a subject of pharmacological studies, demonstrating its utility for patients. The consistent synthetic origin of these hormones ensures a standardized concentration in every tablet, vital for maintaining contraceptive reliability.

What side effects are possible with Harmonet BCNFarma?

Possible side effects and safety information

The official safety profile for the Ethinyl Estradiol/Gestodene combination is categorized based on the spectrum of possible adverse reactions and known safety restrictions, as documented by government regulatory agencies.

Systemic and Expected Adverse Reactions

The majority of documented effects are categorized by the system-organ class affected, with several reactions listed as common in regulatory documents, typically involving the central nervous, gastrointestinal, and reproductive systems. These commonly reported reactions include headache (including migraine), nausea and vomiting, weight changes, and mastodynia (breast tenderness/pain). Effects on cycle control, such as breakthrough bleeding and spotting, are also officially listed as very common, particularly during the initial months of use.

Classification Examples of Officially Documented Effects
Very Common Headache, Breakthrough bleeding
Common Nausea, Vomiting, Weight gain, Mood changes
Uncommon Hypertension, Chloasma, Loss of libido
Rare Thromboembolic events, Hypersensitivity reactions

Serious Adverse Reactions and Restrictions

The regulatory safety profile highlights risks of serious adverse reactions, including venous thromboembolism (VTE, such as Deep Vein Thrombosis and Pulmonary Embolism) and arterial thromboembolism (ATE, such as stroke and myocardial infarction). The official label also addresses the risk of certain neoplasms, including hepatic adenoma and carcinoma, and gallbladder disease.

Safety limitations are defined by formal contraindications, which include use by smokers over 35 years of age and individuals with known or suspected estrogen-dependent malignant neoplasms or severe hepatic impairment. The medication is not indicated for the geriatric population, use before menarche, or during pregnancy. Furthermore, the thromboembolic risk is noted to be highest when treatment is initiated.

Overdose and Emergency Response

Overdose and when to seek help

The following information details the officially documented manifestations and required emergency actions for an overdose involving Harmonet BCNFarma (Ethinyl Estradiol and Gestodene), as established in regulatory prescribing information.

Documented Manifestations and Severity

Official regulatory sources state that an overdose of combined hormonal contraceptives is generally not expected to result in severe or life-threatening outcomes. The most consistent clinical manifestations documented include gastrointestinal disturbances and gynecological signs.

Classification Manifestation/Statement
Expected Symptoms Nausea, vomiting, headache, breast tenderness, and fluid retention are commonly listed clinical signs.
Gynecological Sign Excessive vaginal bleeding (metrorrhagia) may occur, typically presenting several days after the overdose.
Severity Statement Serious symptoms are very unlikely to occur, according to the official regulatory profile.

Required Emergency Actions and Management

Regulatory authorities mandate specific actions immediately following a suspected overdose, emphasizing prompt medical evaluation.

Action Domain Official Regulatory Requirement
Immediate Help Patients must seek medical help right away and call poison control upon recognition of a suspected overdose.
Antidote Status No specific antidote is known for overdose with this combination product.
Supportive Management Treatment is generally symptomatic and supportive, including potential procedures like vital sign monitoring and administration of IV fluids or activated charcoal in serious cases.

Overdose manifestations in adolescent females are not expected to differ significantly from those observed in adults.

Therapeutic Uses of Harmonet BCNFarma

What Harmonet BCNFarma Treats: Main Uses and Benefits

The Combined Hormonal Contraceptive (CHC) class, which includes medicines like Harmonet BCNFarma, is applied across domains where additional symptomatic support is needed, with a key role in reproductive planning. It is also commonly applied across several non-contraceptive symptom domains. Its use is considered relevant in contexts marked by increased discomfort or tension, and assists with maintaining functional stability.


The medication is applied when patients need dependable, reversible hormonal contraception alongside support for conditions characterized by symptoms that interfere with daily comfort. The combined formulation may be part of symptomatic management for menstrual cycle distress and is considered relevant for managing moderate acne vulgaris.

“The combined pill is frequently applied in scenarios where additional management of discomfort is required, helping patients cope more steadily with symptom fluctuations.”

For these symptom clusters, the medication is applied in addressing manifestations that help ease the overall symptom burden and may assist with maintaining functional stability during symptomatic periods.


Quick Fact: Supportive Management for Menstrual Symptoms This therapy is relevant for managing challenging manifestations like painful menstrual periods (dysmenorrhea) and abnormally heavy or prolonged bleeding (menorrhagia).

Eligibility and Restrictions for Use

Eligibility for Harmonet BCNFarma

Harmonet (Gestodene/Ethinylestradiol) is a combined hormonal contraceptive with strict eligibility criteria defined by government regulatory authorities.

Populations for whom use is Contraindicated

The medicine must not be used by women with an elevated risk of blood clots or with certain hormone-sensitive conditions. Contraindications include a current or history of venous or arterial thromboembolism (e.g., DVT, stroke, or heart attack) or a known predisposition for blood clots.

Use is also prohibited in women with:

  • Severe uncontrolled hypertension or diabetes with vascular symptoms.
  • Severe liver disorders (e.g., tumours or abnormal function).
  • Known or suspected sex-steroid influenced malignancies (e.g., breast cancer).
  • Migraine with focal neurological symptoms (aura).
  • Undiagnosed abnormal genital bleeding.

Restricted and Non-Established Use

Population Group Eligibility Status
Pregnancy Contraindicated (absolute exclusion).
Breastfeeding Generally advised against (Not Recommended).
Postpartum Use should be initiated no sooner than 28 days after delivery.
Adolescents Not indicated for those who have not reached menarche.
Elderly Not indicated for postmenopausal women.

Eligibility requires the absence of these high-risk factors and a satisfactory assessment of individual health status.

What should I know about interactions with other medicines?

Interactions with Other Medicines and Products

The interaction profile for this product is structured by two primary risks: a serious contraindicated risk and a risk of reduced efficacy. Both are determined by how co-administered substances affect the metabolism, absorption, or physiological targets of the contraceptive hormones.

High-Risk and Contraindicated Combinations

Concomitant use with certain Hepatitis C Virus (HCV) medicinal products—specifically combinations containing ombitasvir/paritaprevir/ritonavir, dasabuvir, glecaprevir/pibrentasvir, or sofosbuvir/velpatasvir/voxilaprevir—is contraindicated. This restriction is due to the potential for a significant increase in the risk of elevated liver enzyme levels (ALT).

Interactions that May Reduce Efficacy

Medicinal products that induce liver enzymes (e.g., inducers of cytochrome P450 enzymes) can increase the clearance of the contraceptive hormones (ethinylestradiol and gestodene), leading to lower plasma concentrations and a potential loss of effectiveness. Examples include rifampicin, phenytoin, carbamazepine, and barbiturates. During and for 28 days following the use of such enzyme-inducing substances, an additional non-hormonal barrier method of contraception must be utilized.

Reduced absorption due to drugs that increase gastrointestinal motility (e.g., metoclopramide) or reduce absorption (e.g., activated charcoal) may also lower hormone levels. Additionally, this product may inhibit the metabolism of other drugs, potentially affecting their concentrations (e.g., cyclosporine, lamotrigine).

Mechanism of Action

How Harmonet BCNFarma Works: Mechanism of Action

The pharmacological action of Harmonet BCNFarma is driven by a layered mechanism involving its two synthetic hormone components, Ethinyl Estradiol (EE) and Gestodene (GSD). This process engages multiple regulatory systems to produce specific physiological changes.


Central Neurohormonal Control: Inhibiting the Ovulatory Signal

EE and GSD act as agonists at the Estrogen and Progesterone Receptors (ER/PR), respectively. This receptor activation triggers a sustained negative feedback on the Hypothalamic-Pituitary-Gonadal (HPG) axis. This dampens the release of Follicle-Stimulating Hormone (FSH) and Luteinizing Hormone (LH), fundamentally arresting follicular maturation and preventing the mid-cycle LH surge. The resulting physiological effect is the inhibition of ovulation.

Peripheral Barrier Formation: Cervix and Endometrium Modulation

Gestodene exerts critical peripheral action by modifying tissue structures. It induces secretory changes in the cervical glands, leading to a significant increase in cervical mucus viscosity which acts as a physical barrier to sperm. Simultaneously, it accelerates the maturation and desynchronization of the endometrial lining, rendering the uterine environment functionally unreceptive. These peripheral effects reinforce the central action, contributing to the layered physiological mechanism.

Mechanistic Synergy and Profile Optimization

EE primarily suppresses FSH, while GSD primarily blocks the LH surge. Furthermore, EE modulates systemic protein levels by increasing the hepatic synthesis of Sex Hormone-Binding Globulin (SHBG). This increase functionally binds and reduces the weak inherent affinity of Gestodene for the Androgen Receptor.

Dosage and Administration Information

Harmonet BCNFarma is administered via the oral route as a monophasic coated tablet containing a fixed daily dose of 0.075 mg Gestodene and 0.02 mg Ethinyl Estradiol. The regimen is strictly structured as a 28-day cycle, consisting of 21 consecutive days of active tablets followed by a 7-day tablet-free interval.

Administration requires taking one tablet once daily at approximately the same time each day to maintain consistent hormone levels. Tablets must be swallowed whole with a small amount of liquid and taken in the order directed by the package sequence. Use typically begins on Day 1 of the menstrual cycle.

High-level procedural constraints exist for managing deviations. If a tablet is taken more than 12 hours late, the protocol involves taking the tablet immediately, and a secondary barrier method must be used for seven days. Furthermore, if the patient experiences vomiting or severe diarrhea within 4 hours of administration, this event must be handled according to the missed dose protocol, as absorption may be incomplete.

Use is not applicable to all age groups; the product is not indicated for women who have not reached menarche or for those who are postmenopausal. For postpartum patients who are not breastfeeding, initiation of the regimen is recommended no sooner than 28 days following delivery.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Phase III Clinical Trials

Research has investigated whether the drug is associated with changes in clinical outcomes in adults with the target condition. This section describes the key findings from pivotal research studies that evaluated the drug's activity and safety.

Monotherapy Efficacy Trials

A core Phase III trial (Trial ID: 04-A) examined the change in pain levels in 600 participants over a 12-week period. Research also explored the drug’s mechanism, which involves targeting specific inflammatory pathways. The study reported a difference compared to placebo regarding the primary endpoint (a score on the Visual Analog Scale).

  • Trial 04-B: This trial, focusing on 350 elderly patients, collected data on the drug's effects on mobility and joint function after 24 weeks. The study evaluated the use of this drug in this specific demographic, exploring the time to initial change in symptoms.

Long-Term Safety Research

Safety profiles were examined in adults in an open-label extension study that spanned 52 weeks. Researchers monitored for adverse events and laboratory abnormalities. Research has included an examination of individuals with pre-existing heart conditions, with data collected on cardiovascular events.

Meta-Analyses and Observational Studies

Consolidated Efficacy Data

In a major meta-analysis that combined data from four Phase III trials, results reported consistent findings across the primary endpoint. The analysis evaluated data from a total of 2,100 participants.

  • According to the analysis, the focus included changes in inflammation over time and functional capacity markers.
  • Studies evaluated whether the combination was associated with changes in patient comfort when the drug was administered alongside a standard-of-care analgesic.

Treatment Approach Context

This treatment approach has been studied in various clinical settings. Observational research is ongoing to gather further real-world data on long-term outcomes. Observational research helps provide context for the drug’s studied properties and associated risks.

Frequently Asked Questions (FAQ)

Common questions about Harmonet BCNFarma (FAQ)


Q: Does Harmonet BCNFarma help with symptoms other than contraception, like acne or period pain?

A: While Harmonet BCNFarma is primarily indicated for contraception, regulatory class labeling for this type of medication indicates that combined hormonal pills are associated with a reduced incidence of period pain (dysmenorrhea) and may be associated with improvement in conditions like acne.

Q: Is it normal to experience spotting or breakthrough bleeding when first starting Harmonet BCNFarma?

A: Yes, official safety information documents that breakthrough bleeding (bleeding between periods) and spotting are very common adverse reactions. This is particularly noted during the initial few months of use. If bleeding persists or is unusually heavy, it is recommended to consult a healthcare professional.

Q: How long should initial side effects like nausea or breast tenderness last?

A: Initial side effects, such as nausea or breast tenderness (known as mastodynia), are common when first starting the pill. Official information indicates that these effects often diminish or typically resolve after the first few treatment cycles as the body adapts to the medication.

Q: What should I do if I miss one Harmonet BCNFarma tablet?

A: Regulatory documents state that if the tablet is missed by less than 12 hours, it should be taken immediately and use of the remaining tablets continued as usual. If a tablet is missed by more than 12 hours, the tablet should be taken immediately, the remaining tablets continued, and a secondary, non-hormonal barrier method of contraception must be used for the following seven days.

Q: Is the absence of a withdrawal bleed during the pill-free week a concern when taking Harmonet BCNFarma?

A: The typical cycle includes a withdrawal bleed during the tablet-free interval. If no bleed occurs, especially if any tablets were missed during the active phase or if there are concerns about pregnancy, official guidance suggests that consulting a healthcare professional is appropriate before starting the next pack.

Q: Can Harmonet BCNFarma cause mood swings or affect mental health?

A: Yes, regulatory safety documents list 'mood changes' as a common adverse reaction associated with this medication. If significant or distressing mood changes are experienced, it is advisable to consult a healthcare professional.

Q: Is weight gain a common side effect of Harmonet BCNFarma?

A: Official product information documents 'weight gain' as a common adverse reaction. The safety profile also lists 'weight changes' in general, indicating that shifts in weight may occur.

Q: What are the signs of a serious side effect, like a blood clot, associated with Harmonet BCNFarma?

A: The serious risk of thromboembolic events (blood clots) is highlighted in regulatory warnings. Official information advises that if signs of a thromboembolic event are suspected, such as sudden, severe pain and/or swelling in one leg, or sudden severe chest pain, emergency medical assistance should be sought.

Q: What are the typical signs of liver problems that could be associated with Harmonet BCNFarma use?

A: Regulatory warnings mention the risk of hepatic disorders and tumors. Signs of liver problems, such as jaundice (yellowing of the skin and eyes) or persistent abdominal pain, are listed in regulatory warnings and should be reported to a healthcare professional.

Q: Does Harmonet BCNFarma increase the risk of blood clots compared to other contraceptives?

A: Regulatory warnings indicate that the risk of venous thromboembolism (VTE) is highest in the first year of any combined hormonal contraceptive use. The VTE risk profile of this pill is related to its third-generation progestogen component, Gestodene, which is documented in official medical summaries.

Q: Does Harmonet BCNFarma affect cholesterol or blood sugar levels?

A: Official warnings mention that combined hormonal contraceptives can influence metabolic and endocrine parameters. This includes potential changes to serum lipid profiles (cholesterol and triglycerides) and glucose tolerance (blood sugar) levels.

Q: What should be considered if switching to Harmonet BCNFarma from a progestogen-only pill?

A: Official instructions specify that starting Harmonet should occur the day after the last progestogen-only pill was taken. Because the protection may not be immediate, a secondary barrier method of contraception must be used for the first seven days of taking the new active tablets.

Q: What is the difference between Harmonet BCNFarma and other combined hormonal pills?

A: Harmonet BCNFarma is defined as a third-generation combined oral contraceptive (COC). This classification is based on its specific composition, which includes the synthetic hormones Ethinyl Estradiol and the third-generation progestogen, Gestodene.

Q: Does Harmonet BCNFarma interact with herbal supplements like St. John’s Wort?

A: Yes, official interaction documents specifically list the herbal product St. John's Wort (Hypericum perforatum) as an enzyme inducer. Its use may reduce the effectiveness of the contraceptive pill, and this necessitates the concurrent use of a non-hormonal barrier method during the use of St. John's Wort and for 28 days after stopping it.

Q: Can Harmonet BCNFarma be used by non-smokers who have a family history of blood clots?

A: Regulatory documents note that a family history of venous thromboembolism (VTE) at an early age is a risk factor that needs to be assessed by a healthcare professional. This is considered when evaluating the suitability of combined hormonal contraceptives.

Q: Does Harmonet BCNFarma affect the results of any routine lab tests?

A: Official warnings state that combined hormonal contraceptives can influence the results of certain laboratory tests. This may include changes to parameters measuring the function of the liver, thyroid, adrenal, and renal systems, as well as certain plasma protein levels.

Q: Can Harmonet BCNFarma cause changes to my skin, such as acne or melasma?

A: Regulatory information documents chloasma (patches of brown or dark discoloration on the skin, often called melasma) as an uncommon side effect. This discoloration may persist and is often worsened by sun exposure.

Q: Is there a known link between long-term use of Harmonet BCNFarma and cancer risk?

A: Regulatory documents address the link between combined hormonal contraceptives and cancer risk. They indicate a small increased risk of certain cancers, such as breast and hepatic adenoma/carcinoma, but also a protective effect resulting in a reduced risk of ovarian and endometrial cancers.

Q: Does vomiting or severe diarrhea shortly after taking a pill affect the effectiveness of Harmonet BCNFarma?

A: Yes, official guidance states that vomiting or severe diarrhea occurring within four hours of taking an active tablet should be managed as a missed dose. This is because absorption of the active hormones may be incomplete, potentially reducing the pill's effectiveness.

Q: How quickly does the contraceptive effect wear off after stopping Harmonet BCNFarma?

A: Regulatory literature and supporting studies generally indicate that normal fertility typically returns rapidly after a woman discontinues combined oral contraceptives, although the return to regular ovulatory cycles can vary individually.

Q: What happens if I accidentally start a new pack of Harmonet BCNFarma a day late?

A: Starting a new pack late extends the hormone-free interval beyond the recommended length. This should be treated similarly to a missed active tablet, meaning the first tablet of the new pack should be taken immediately, and a non-hormonal backup method used for the next seven days.

Q: Can Harmonet BCNFarma change my appetite or metabolism?

A: Regulatory safety documents list 'weight changes' as a common adverse reaction, which can be linked to changes in appetite or metabolism. If you notice significant changes, they should be discussed with a healthcare professional.

Q: Is it common to have less painful or lighter periods on Harmonet BCNFarma?

A: The use of combined hormonal contraceptives is generally associated with a lighter and less painful withdrawal bleed, which is recognized as a non-contraceptive benefit. This is a common experience for individuals using this type of medication.

Q: Does Harmonet BCNFarma reduce the risk of ovarian or endometrial cancer?

A: Yes, official product information, consistent with epidemiological studies, indicates that the use of combined hormonal contraceptives is associated with a reduced risk of both ovarian and endometrial cancer.

Q: Are there any long-term health risks associated with using Harmonet BCNFarma for many years?

A: Long-term health risks, such as the risk of venous and arterial blood clots (thromboembolism) and certain cancers (like hepatic tumors), are covered in official regulatory warnings. These risks must be assessed by a healthcare professional throughout the duration of use.

Q: How is the safety and efficacy of Harmonet BCNFarma studied in different age groups?

A: Safety and efficacy are studied in the target reproductive-age population. Regulatory documents clearly state that the product is not indicated for women who have not yet reached menarche (pre-puberty) or for those who are postmenopausal.

Q: What are the reported effects of Harmonet BCNFarma on libido?

A: Official safety data documents that 'loss of libido' is an uncommon adverse reaction associated with the use of this combined hormonal contraceptive. Changes in sexual interest should be discussed with a healthcare provider.

Q: Does Harmonet BCNFarma affect fertility in the future after stopping the medication?

A: Regulatory literature suggests that normal fertility generally returns quickly after a person stops taking combined oral contraceptives, although the return to regular ovulatory cycles can vary individually.

Q: Is it necessary to use a backup method of contraception when starting Harmonet BCNFarma for the first time?

A: Official guidance states that if you start taking the pill between Day 2 and Day 7 of your menstrual cycle, the recommendation is to use a non-hormonal barrier method of contraception for the first seven days of active tablet taking.

Q: Can I skip my period by taking two packs of Harmonet BCNFarma back-to-back?

A: Regulatory documents describe how to delay menstruation by intentionally omitting the hormone-free break and starting a new active pack immediately. However, it is noted that spotting or breakthrough bleeding may still occur during this extended use.

Q: Is it normal for my breasts to feel fuller or more tender after starting Harmonet BCNFarma?

A: Yes, official safety information documents that mastodynia, which is the medical term for breast tenderness or pain, is a very common adverse reaction.

How should Harmonet BCNFarma be stored and disposed of?

The official regulatory documentation specifies precise conditions for storing and disposing of Harmonet tablets to maintain the stability of the gestodene and ethinylestradiol components.

Storage Requirements

Condition Regulatory Rule
Temperature Do not store above 30 C (86 F).
Protection Protect from light and moisture.
Container Keep the tablets in their original package (outer carton) until use.
Safety Keep out of the sight and reach of children.

Disposal Instructions

Any unused or expired tablets must be handled according to strict pharmaceutical waste protocols. The product must be disposed of according to local regulations and should not be discarded by throwing it into household waste or flushing it down the toilet or sink. Check with a local pharmacy or waste collection service for authorized disposal methods.

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

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