Duinum

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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 Duinum

Quick Facts

Property Description
Active ingredient Clomifene Citrate (INN)
Form Oral Tablet
Pharmacological class Selective Estrogen Receptor Modulator (SERM)
Common use Ovulation Induction
Origin Synthetic, Non-steroidal compound

What Type of Medicine Is Duinum?

Duinum is a synthetic, non-steroidal compound clinically recognized and classified as a Selective Estrogen Receptor Modulator (SERM). Its core identity is defined by the active ingredient, Clomifene Citrate, which functions primarily as an Ovulatory Stimulant. This placement within the SERM category is critical, as the compound selectively binds to estrogen receptors to modulate the body’s hormonal signaling rather than replacing hormones directly. The use of the single-entity Clomifene Citrate formulation is often positioned for individuals experiencing oligo-ovulatory infertility where the primary issue is the failure to ovulate regularly.

Duinum’s Form and General Purpose

Duinum is formulated as an oral agent, specifically a tablet, which is the standard, patient-friendly route of administration for Clomifene Citrate. As a single-ingredient product, its composition includes the Clomifene Citrate molecule alongside necessary solid pharmaceutical excipients. The general purpose of this medication is to promote and facilitate the crucial biological process of ovulation in individuals experiencing ovulatory dysfunction. Its targeted action, which stimulates the Hypothalamic-Pituitary-Ovarian (HPO) axis, is why the World Health Organization includes Clomifene on its Model List of Essential Medicines in the category of Ovulation Inducers. This inclusion highlights the established, vital role the compound plays in reproductive medicine for women desiring pregnancy.

Regulatory References

  1. WHO Essential Medicines List for Clomifene

What side effects are possible with Duinum?

Possible Side Effects and Safety Information

The safety profile of Duinum (Clomifene Citrate) is documented through regulatory classification systems, detailing expected and less common adverse reactions. Side effects are categorized by frequency and the body system affected, consistent with official prescribing information.


Frequency-Classified Adverse Reactions

The most frequently observed effects, classified as Very Common or Common in regulatory documents, include vasomotor flushes (hot flashes), ovarian enlargement or cyst formation, headache, and gastrointestinal symptoms such as nausea and abdominal discomfort.

Less frequently reported (Uncommon/Rare) adverse reactions include blurred vision and other visual disturbances, dizziness, and abnormal uterine bleeding. Postmarketing reports, where frequency is Not Known, have included events such as pancreatitis, hepatitis, and severe neurological effects.


Serious Safety Considerations

Official labels highlight specific, serious risks. These include Ovarian Hyperstimulation Syndrome (OHSS), a condition that can rapidly progress and involve serious complications such as thromboembolic events. Cases of prolonged or permanent visual impairment have also been reported, particularly associated with increased total dose or duration of therapy. Epidemiological data suggests a potential increased risk of ovarian cancer with prolonged use, typically exceeding six treatment cycles.


Safety Restrictions and Contraindications

Duinum is contraindicated by regulatory authorities in individuals who are currently pregnant (Category X), have active or a history of liver disease, or suffer from undiagnosed abnormal uterine bleeding. Caution is also specified for patients with pre-existing conditions like uterine fibroids or a prior history of visual disturbances related to Clomifene use, establishing clear limitations on its authorized use.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory documents define the overdose profile for Duinum (Clomifene Citrate) by documenting specific clinical manifestations and mandating immediate emergency actions.


Documented Overdose Manifestations

Symptoms associated with overdosage or increased dosage/duration are formally documented by regulatory authorities. These include nausea, vomiting, and hot flashes.

Of particular concern are visual disturbances, such as blurred vision and scintillating scotomata (visual spots or flashes). Abdominal pain and stomach swelling due to ovarian enlargement are also documented outcomes, particularly with higher exposure.


Required Emergency Actions

The official guidance emphasizes the urgent need for professional intervention, as no specific antidote is known for Clomifene Citrate overdose, making treatment solely symptomatic and supportive.

  • Seek Immediate Attention: Contact a poison control center or seek emergency medical attention for any suspected overdose.
  • Emergency Services: Immediately call emergency services (e.g., 911) if the person collapses, has a seizure, or experiences trouble breathing.
  • Visual Warning: Treatment must be stopped immediately if any unusual visual symptoms occur, and medical attention must be sought for ophthalmic evaluation. Severe outcomes, including potentially irreversible visual impairment, have been reported with increased dosage or duration.

Therapeutic Uses of Duinum

What Duinum Treats: Main Uses and Benefits

Duinum (Clomifene Citrate) is a core medication used in reproductive medicine, addressing infertility linked to specific types of systemic imbalance by providing supportive therapeutic benefit: the induction of ovulation. Its use is highly focused on overcoming functional barriers to conception. The medication is commonly used in situations involving ovulatory dysfunction in women desiring pregnancy.


The primary therapeutic focus of Duinum is in managing symptoms related to systemic imbalance, specifically addressing the manifestations of anovulation (the complete failure to release an egg) and oligo-ovulation (infrequent or irregular egg release). The medication is commonly used in conditions presenting with recurrent or episodic manifestations of ovulatory dysfunction, including infertility associated with Polycystic Ovary Syndrome (PCOS). The therapeutic focus supports the ovulatory process, which helps improve day-to-day comfort and may contribute to establishing a more stable ovulatory cycle.

Duinum is used for managing symptom clusters that may become disruptive, such as amenorrhea (absent periods) or lengthy, unpredictable cycles. It offers symptomatic relief that helps patients cope more steadily by supporting the restoration of a predictable, functional menstrual rhythm, which assists with maintaining functional stability and may assist in family planning efforts.

Quick Fact: Relief for Ovulatory Dysfunction
Focus: Addresses symptoms of anovulation (no egg release) and oligo-ovulation (infrequent egg release).
Patient Benefit: Supports the restoration of a more stable menstrual rhythm. This assists with reproductive health goals.

Regulatory References

  1. ovulatory dysfunction in women desiring pregnancy

Eligibility and Restrictions for Use

Duinum (Clomifene Citrate) is strictly limited to use by adult women with demonstrated ovulatory dysfunction who are attempting to achieve pregnancy. Official regulatory documents define clear exclusions and restrictions for its use.

Contraindicated Populations (Must Not Use)

Use is absolutely prohibited by regulatory labeling in the following patient groups and conditions:

  • Pregnancy: The medication is contraindicated if the patient is pregnant or suspected of being pregnant.
  • Liver Function: Patients with active liver disease or a confirmed history of hepatic dysfunction.
  • Reproductive/Endocrine: Individuals with abnormal uterine bleeding of undetermined origin, ovarian cysts not caused by Polycystic Ovary Syndrome (PCOS), uncontrolled thyroid or adrenal dysfunction, or a pituitary tumor.
  • Hypersensitivity: Patients with known allergy to Clomifene Citrate or any of its ingredients.

Age and Physiological Status

Population Group Regulatory Status
Pediatric Patients Use is not approved or recommended.
Older Adults (Geriatric) Safety and effectiveness are not established.
Breastfeeding Women Use is not recommended, as the drug may suppress lactation.

Limitations and Restrictions

Therapy is considered ineffective or inappropriate for patients with primary pituitary or primary ovarian failure. Caution is advised, as stated in the label, for patients with pre-existing conditions such as uterine fibroids or a history of hyperlipidemia, which may require additional clinical monitoring.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official interaction profile for Duinum (Clomifene Citrate) is notable for the regulatory statement that drug interactions have not been formally documented with other medicinal products. This classification is consistently maintained across the prescribing information published by government health authorities, which explicitly state that interactions between clomifene and other products have not been reported or described.

This lack of documentation means that official labeling does not specify restrictions in the following key areas related to interactions:

  • Contraindicated Combinations: No specific medicinal product pairings are classified as contraindicated solely due to an interaction risk with Duinum.
  • Metabolic or Transporter Effects: The official documents do not list any documented interactions related to the body's processing of the medicine, such as those mediated by CYP enzymes or drug transporters.
  • Exposure Alteration: No other substances are formally documented to alter the clearance or plasma concentration of Duinum or vice-versa.
  • Food and Substance Restrictions: Regulatory labeling does not contain formal documentation of specific interactions with food, alcohol, or herbal products.

Consequently, the official regulatory data does not impose any mandatory rules for the timing or separation of Duinum administration relative to other medicinal products or substances.

Mechanism of Action

Targeting Central Estrogen Receptors to Reverse Feedback

Duinuum (Clomifene Citrate) acts primarily by binding as a competitive antagonist to Estrogen Receptors ( ERs) in the hypothalamus. By occupying these receptors, the drug blocks the body’s natural estrogen from exerting its usual negative feedback signal, and prompts the central nervous system to respond to the perceived absence of estrogen with compensatory hormonal signaling.


Disrupting the HPO Axis to Induce Gonadotropin Release

The mechanism's systemic effect involves the Hypothalamic-Pituitary-Ovarian (HPO) axis disruption, leading to a compensatory increase in the pulsatile release of GnRH. This, in turn, stimulates the pituitary gland to secrete elevated concentrations of Follicle-Stimulating Hormone ( FSH) and Luteinizing Hormone ( LH), whose presence stimulates follicular recruitment and growth in the ovaries.


Pharmacologically Triggering Follicle Maturation and Egg Release

The elevated FSH and LH levels resulting from this central action directly stimulate the ovary to mature its follicles. The subsequent rise in ovarian estrogen production triggers the crucial, natural LH surge, which serves as the final physiological trigger for the rupture of the dominant follicle and subsequent egg release.

Dosage and Administration Information

How to Use Duinum

Duinum (dexlansoprazole) is a delayed-release capsule intended for oral administration once daily, and may be taken without regard to food. Following the labeled instructions is essential for proper use.

Official Dosing and Duration

Condition Dose (Adults) Frequency and Duration
Erosive Esophagitis (EE) Healing 60 mg Once daily for up to 8 weeks
EE Maintenance 30 mg Once daily (up to 6 months)
Symptomatic Non-Erosive GERD 30 mg Once daily for 4 weeks

Administration Requirements

Swallowing the Capsule: The delayed-release capsule must be swallowed whole. It should not be chewed or crushed. The dosage schedule should be maintained by taking the medicine at approximately the same time each day.

Missed Dose: If a dose is missed, it should be administered as soon as it is remembered. However, if the time for the next scheduled dose is due, the missed dose should be skipped entirely, and the patient should resume the next dose at the regular time. Two doses must not be taken at the same time to make up for a missed dose.

Alternative Administration (for difficulty swallowing): The capsule may be opened, and the intact granules sprinkled onto one tablespoon of applesauce. This mixture must be swallowed immediately without chewing the granules. Alternatively, the granules may be mixed with water for oral syringe or nasogastric tube administration, following specific procedural steps outlined in the prescribing information.

Rules for Special Populations

No dosage adjustment is considered necessary for patients with mild hepatic impairment (Child-Pugh Class A). However, for patients with moderate hepatic impairment (Child-Pugh Class B), healthcare providers should consider a maximum daily dose of 30 mg. Use in patients with severe hepatic impairment (Child-Pugh Class C) has not been studied and is not recommended.

Recent Clinical Evidence

Research evidence / Overview of studies for Duinum

Evidence for Ovulatory Dysfunction (Anovulation / Oligo-ovulation)

The research base for Duinum (Clomifene Citrate) includes numerous Randomized Controlled Trials (RCTs) and large-scale Systematic Reviews. This research has primarily focused on its use in adult women who are seeking pregnancy but experience an absence of ovulation (anovulation) or irregular ovulation (oligo-ovulation). This context includes populations studied that were diagnosed with conditions such as Polycystic Ovary Syndrome (PCOS). Studies were designed to measure a sequence of outcomes, starting with the immediate result of whether an egg was successfully released (ovulation), followed by the longer-term results of achieving a clinical pregnancy and, ultimately, a live birth.

In the observed populations, studies frequently reported measurements related to the achievement of successful ovulation. However, research consistently describes a pattern where the measured rate of successful ovulation was significantly higher than the rate of resulting clinical pregnancy or live birth. This pattern highlights that achieving ovulation is only one part of the process studied in relation to the final outcome. Studies also monitored intermediate measures and reported that the compound was associated with specific patterns, such as measurements of the thickness of the uterine lining or changes in cervical mucus characteristics.

Focus of Studies on Live Birth and Pregnancy Outcomes

This focus on outcomes related to systemic or functional imbalance highlights that successful stimulation of the target process is one factor, as highlighted by research findings, in the reproductive outcome. Research findings indicate that success rates appear to depend on multiple factors, including the individual's specific underlying cause of infertility and their overall health profile.

The ultimate outcome monitored in clinical trials is the live birth rate, but these findings were often mixed or uncertain, in contrast to the rates reported for ovulation itself. Because the sample sizes were often modest for studies tracking the final live birth rate, and the evidence quality varies across studies, generalizing findings requires caution. Study results reflect the specific conditions under which they were conducted and describe group patterns, not personal outcomes.

Gaps in Research and Areas of Uncertainty

The research landscape describes several key areas of uncertainty and limitation. A consistent gap is the persistent discrepancy between the high rate of induced ovulation and the lower live birth rate reported. Furthermore, evidence is limited for certain subgroups, such as patients who have not responded to standard treatment or those with certain comorbidities. Evidence derived from these studies is limited, and long-term effects are not fully established.

Key Studies & References

  1. Ovulation induction in women with polycystic ovarian syndrome: Clomiphene citrate or letrozole?
  2. Label: CLOMID- clomiphene citrate tablet (FDA/DailyMed Drug Label)
  3. Fertility problems: assessment and treatment (NICE Clinical Guideline 156)

Frequently Asked Questions (FAQ)

Common questions about Duinum (FAQ)


Q: What is Duinum used for?

Duinum is officially indicated for the management of moderate to severe chronic pain in adult patients. According to regulatory documents, it is typically prescribed when other, less potent pain relievers have not provided adequate relief.


Q: Does Duinum cause drowsiness?

Official safety information for Duinum states that drowsiness is a common side effect, particularly when starting treatment or when the dosage is adjusted. Official product information advises that patients should be cautious when driving or operating machinery until they understand the potential effects of the medication.


Q: How quickly does Duinum start working?

Official studies indicate that the onset of pain relief can vary, often becoming noticeable within a few hours of the initial use. However, achieving the full, sustained level of relief may require several days of consistent use, following the prescribed regimen.


Q: Is Duinum addictive?

Official product information acknowledges that Duinum, as an opioid medication, has a risk of dependence and addiction, even when used correctly under a doctor's supervision. Regulatory documents highlight the importance of using it exactly as prescribed to minimize this risk.


Q: What should I do if I miss a dose of Duinum?

The official product labeling provides guidance stating that a missed dose should be taken as soon as it's remembered, unless it is close to the time for the next scheduled dose. If it is nearly time for the next dose, the official guidance is to simply skip the missed dose and continue with the regular schedule. Official documents clearly state that a patient should never take a double dose to compensate for a missed one.

How should Duinum be stored and disposed of?

Duinum (Clomifene Citrate) must be stored strictly according to regulatory guidelines to maintain its stability and prevent accidental ingestion. The product must be kept at Controlled Room Temperature, typically 20 C to 25 C, and protected from heat, moisture, and light. To ensure quality, the tablets must remain in their tightly closed, original container. Crucially, the medicine must be stored out of the reach and sight of children. For disposal, the official recommendation is to use an authorized drug take-back program. If a program is unavailable, unused medicine should be mixed with an undesirable substance (e.g., used coffee grounds) and placed in a sealed container before discarding in household trash; it must not be flushed.

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

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