Serophene

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Serophene

Medically reviewed

Marina Burgos

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 Serophene

Property Description
Active ingredient Clomifene citrate
Form Tablet
Pharmacological class Selective Estrogen Receptor Modulator (SERM)
General use Ovulation stimulation
Origin Synthetic, nonsteroidal compound

Serophene is a specialized, prescription-only oral medication containing the active ingredient Clomifene citrate, and is used as a foundational step in fertility management. The drug is classified as a synthetic, nonsteroidal compound that functions primarily as an ovulatory stimulant. This medication is taken in tablet form and is the drug entity known internationally as Clomifene or Clomiphene. The Serophene brand, alongside its counterpart Clomid, holds historical significance as one of the original and most recognized oral fertility agents available to patients.


What Type of Medicine is Serophene?

Serophene belongs to the specialized pharmacological class known as a Selective Estrogen Receptor Modulator (SERM). This classification means the compound acts strategically to modulate, or selectively change, the effect of estrogen within certain parts of the body. This agent is utilized in managing anovulatory infertility. Clomifene citrate is indicated for the treatment of ovulatory dysfunction in women desiring pregnancy. As a synthetic agent, Clomifene is designed to target specific hormone pathways within the reproductive system, distinguishing it from traditional hormone supplements. This mechanism of action classifies it primarily as an anti-estrogen used therapeutically to promote fertility.


Serophene’s Composition and Purpose

The medication is a single-active-ingredient product, consisting of Clomifene citrate combined with standard pharmaceutical excipients, such as lactose and starch, formed into a solid oral preparation. Its overarching therapeutic purpose is to act as an ovulatory stimulant to help promote and regulate egg production in individuals experiencing challenges with the natural timing or occurrence of ovulation. A typical use scenario involves female patients who experience ovulatory dysfunction, such as those with polycystic ovary syndrome (PCOS). It is widely regarded as a first-line therapy for addressing this specific component of ovulatory dysfunction.


How Does Clomifene Initiate Regulation?

Clomifene initiates regulation by strategically binding to estrogen receptors in the brain, creating the perception of low estrogen levels in the body's control center. This temporary disruption prompts the pituitary gland to increase the necessary signaling hormones, Follicle-Stimulating Hormone (FSH) and Luteinizing Hormone (LH). This controlled increase in gonadotropin release is the fundamental principle behind its therapeutic effect, leading to the controlled promotion of ovarian follicle development and subsequent egg maturation.

What side effects are possible with Serophene?

Possible Side Effects and Safety Information

The officially documented safety profile for Serophene (Clomifene citrate) outlines adverse reactions based on their frequency and the system-organ class affected, strictly adhering to regulatory standards.


Frequency-Classified Adverse Reactions

Adverse effects are categorized in regulatory documents:

  • Very Common (ge 1/10): Vasomotor flushing (hot flashes).
  • Common (ge 1/100 to < 1/10): Headaches, dizziness, visual blurring, abdominal discomfort/distension, nausea, and ovarian enlargement.
  • Uncommon (ge 1/1,000 to < 1/100): Depression, nervousness, insomnia, and abnormal uterine bleeding.

Serious Adverse Reactions and Safety Constraints

Official labeling documents certain serious reactions, including Ovarian Hyperstimulation Syndrome (OHSS), a potentially serious condition involving excessive ovarian response. Regulatory documents also note the occurrence of rare thrombotic and cerebrovascular events. Furthermore, the safety profile notes an increased risk of multiple gestation (twinning) associated with the medication.

Usage is subject to explicit safety restrictions. Serophene is contraindicated during pregnancy, in the presence of active liver disease or history of liver dysfunction, and with certain types of ovarian cysts not attributable to Polycystic Ovary Syndrome. Time-related patterns state that certain effects, like ovarian enlargement and visual symptoms, are typically dose-related and generally reversible upon cessation of therapy. These constraints define the appropriate population for whom this medicine is intended.

Overdose and Emergency Response

Overdose and when to seek help

Regulatory prescribing information for Serophene (Clomifene citrate) details the officially documented manifestations of an overdose. These symptoms include nausea and vomiting, hot flashes, and the occurrence of visual disturbances such as blurring or scintillating scotomata. A common clinical finding reported in overdose is ovarian enlargement with accompanying pelvic or abdominal pain.


Required Emergency Action

Immediate action is required if an overdose is suspected. Users must seek emergency medical attention or contact a Poison Control Center right away. The most severe, life-threatening complication associated with use beyond recommended guidelines is Ovarian Hyperstimulation Syndrome (OHSS). Severe OHSS can progress to serious systemic conditions, including renal failure, pulmonary oedema, and deep venous thrombosis. Additionally, visual changes must prompt the immediate cessation of treatment, as they have been reported to be potentially irreversible.


Management and Antidote Status

Management of an overdose is defined as strictly symptomatic and supportive. Regulatory documents confirm that there is no known antidote for Clomifene citrate. Treatment protocols are focused on procedures such as gastrointestinal decontamination, careful monitoring of fluid and electrolytes, and supportive measures to prevent complications. Specific patient factors, such as a history of hypertriglyceridemia, may increase the risk of severe outcomes with higher exposures.

Therapeutic Uses of Serophene

What Serophene Treats: Main Uses and Benefits

Serophene (clomiphene citrate) is a medication that is commonly used in managing certain conditions related to infertility. Its primary use is for managing conditions characterized by episodic or fluctuating symptom patterns related to ovulatory function, such as Polycystic Ovary Syndrome (PCOS) and secondary amenorrhea. The medication is applied across domains where additional symptomatic support is needed to help manage symptoms related to systemic imbalance.


Addressing Conditions Related to Absent or Irregular Ovulation

This domain is applied in situations involving certain distressing symptoms, such as irregular or absent menstrual cycles, which are common signs of anovulation. Serophene is commonly used to help with these symptom clusters. This action provides support that helps ease the overall symptom burden related to systemic imbalance.

“Serophene assists patients during difficult episodes by easing distress and supporting a sense of functional stability.”

Quick Fact: Support for Irregular Cycles


Supportive Uses in Other Contexts

In clinical settings that involve acute or unstable symptom patterns where the cause of conception difficulties is not clear, such as unexplained infertility, Serophene may be part of symptomatic management. It assists with maintaining functional stability, which can contribute to improved comfort during periods of heightened symptoms. It is also considered relevant for supportive management in specific male fertility contexts, where it may assist with managing symptoms related to systemic imbalance linked to low sperm count or hypogonadism.

Eligibility and Restrictions for Use

Who Can and Cannot Use Serophene?

The population eligibility for Serophene (clomiphene citrate) is strictly defined by regulatory authorities to ensure appropriate use for ovulatory dysfunction in adult women desiring pregnancy.


Contraindicated Populations

Serophene must not be used by patients who are pregnant, as its intended purpose is no longer relevant, and pregnancy must be ruled out before each treatment cycle. The medication is also contraindicated for individuals with liver disease or a history of liver dysfunction, as well as those with an organic intracranial lesion (e.g., a pituitary tumor). Patients with abnormal uterine bleeding of undetermined origin or ovarian cysts (other than those caused by PCOS) are also ineligible for treatment.


Age and Condition Restrictions

Use is restricted to adult women; safety and efficacy have not been established for pediatric patients, and the drug is not indicated for post-menopausal individuals. Caution is advised for patients with uterine fibroids or those who are breastfeeding due to potential physiological effects. Additionally, the drug is considered ineffective and thus not recommended for patients diagnosed with primary pituitary or primary ovarian failure.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory profile for Serophene (Clomifene citrate) identifies specific restrictions related to co-administered medicines and a patient’s physiological state. The primary drug interaction constraint involves medicines classified as Estrogen Agonist/Antagonists, such as Ospemifene. Co-administration with these compounds is formally restricted and classified as a contraindicated combination due to the risk of pharmacodynamic synergism, meaning both substances can have additive effects on estrogen-sensitive tissues as stated in regulatory labels.

A critical population-specific interaction constraint relates to the drug’s metabolism. Serophene undergoes enterohepatic circulation and is metabolized by the liver. Consequently, use is contraindicated in patients with a history of liver disease or hepatic dysfunction. This restriction is due to the potential for reduced clearance, which can lead to an officially documented increased serum concentration and prolonged half-life of clomiphene in the body.

Regulatory prescribing information does not explicitly document specific interactions with common drug-metabolizing enzymes, food, alcohol, or herbal products, nor are there mandatory timing-based rules for separation of doses. Additionally, patients with preexisting or family history of hyperlipidemia may require periodic monitoring of plasma triglycerides, as clomiphene has been associated with hypertriglyceridemia, representing a specific metabolic consideration.

Mechanism of Action

Hypothalamic Estrogen Receptor Antagonism

Serophene functions as a Selective Estrogen Receptor Modulator (SERM), primarily through competitive binding to estrogen receptors in the hypothalamus. This binding blocks the typical negative feedback influence from circulating estrogen, resulting in the hypothalamic-pituitary-ovarian axis responding as if circulating estrogen concentrations were low.


Stimulation of Gonadotropin Release

The consequence of this perceived low estrogen state is that the hypothalamus increases its pulsatile release of Gonadotropin-Releasing Hormone (GnRH). This, in turn, stimulates the anterior pituitary gland to secrete elevated levels of the gonadotropins, Follicle-Stimulating Hormone (FSH) and Luteinizing Hormone (LH), thereby increasing the resulting gonadotropin secretion.


Promotion of Ovarian Follicular Development

The resulting increase in circulating FSH and LH acts upon the ovaries, initiating growth and maturation within a cohort of ovarian follicles. This hormonal signal promotes the development of a dominant follicle capable of producing a significant rise in estrogen and supporting the conditions necessary for follicular rupture.

Dosage and Administration Information

How to Use Serophene: Official Administration Guidelines

Serophene (clomiphene citrate) is an oral medication administered in a structured, intermittent pattern, following established clinical protocols.

Official Dosing and Cycle Structure

The use of this medication is defined by a cyclic regimen of 5 days, rather than continuous daily use. The standard initial dose is 50 mg taken once daily for 5 days. This dose is based on standard prescribing information for clomiphene citrate.

If the first course does not produce a response, the dose may be increased for a subsequent cycle to 100 mg once daily for 5 days. This 100 mg/day amount for 5 days represents the maximum recommended dose and duration; increasing the dose or duration beyond this level is not advised in standard clinical guidelines.

Administration Timing and Limits

The timing for administration is tied to the menstrual cycle. The 5-day regimen is typically initiated on or about the 5th day of the cycle. If no recent bleeding has occurred, therapy may be started at any time. A subsequent course may be started as early as 30 days following the previous one, but only after evaluation to exclude pregnancy.

Usage protocols dictate a clear limit on overall exposure. Long-term therapy is generally not recommended beyond a total of about six cycles. Furthermore, special consideration is given to certain populations: for example, patients diagnosed with Polycystic Ovary Syndrome (PCOS) may require a lower dosage or duration due to increased sensitivity. The medication is also restricted to patients with normal liver function.

Recent Clinical Evidence

The research base for Serophene (Clomifene citrate) is primarily built on data from Randomized Controlled Trials (RCTs) and comprehensive Systematic Reviews that synthesize trial findings. The evidence describes patterns of use and outcomes measured in specific fertility contexts.

Evidence for use in Anovulatory Infertility

Research has examined the medication's use in women experiencing infertility due to absent or irregular ovulation, such as in cases of Polycystic Ovary Syndrome (PCOS). Studies monitored key outcomes such as the rate of Ovulation and the attainment of Clinical Pregnancy. The collected data contain patterns of ovulation reported in the studied populations. Findings describe the Clinical Pregnancy Rate as an outcome reported in the trials. However, older trials often provided limited information regarding the definitive long-term outcome of Live Birth Rate, which is a noted limitation in the earlier research.

Evidence for use in Unexplained Infertility

Research has also examined the use of the drug in couples with unexplained infertility. These studies often includes research where the medication was studied against expectant management (no active treatment). Studies observed that the Live Birth Rate reported during treatment did not consistently exceed the rate observed in the control group. Research also highlights changes measured during the study period related to physiological markers, with some studies observing patterns related to changes in the uterine lining (endometrial thickness).

Long-Term Studies and Extended Follow-up

Primary trials typically observed responses spanning up to six treatment cycles. Observational studies, which follow patients over longer time periods, offer insights into cumulative outcomes over a longer duration. Long-term outcomes are not fully established through large-scale, prospective RCTs; instead, they often rely on observational or retrospective data collection.

What Remains Uncertain and Areas for Future Research

One key limitation documented in the research record is the heterogeneity of the evidence, meaning that results vary across trials. Early studies often prioritized reporting ovulation rather than the definitive outcome of Live Birth, creating a data gap. Comparative evidence is lacking when studies monitor the medication against newer alternatives for certain patient groups.

Frequently Asked Questions (FAQ)

Common questions about Serophene (FAQ)

Q: How quickly does the active ingredient in Serophene leave the body?

The active ingredient, clomiphene, is a mixture of two chemical isomers that clear the body at different rates. The shorter-acting isomer, enclomiphene, has an approximate half-life of about 10 hours. However, the longer-acting isomer, zuclomiphene, may remain in the body for a more extended period, with some components detectable for up to a week.

Q: When can people generally expect to ovulate after completing a cycle of Serophene?

Studies and official information indicate that the timing of ovulation is generally predictable following the course of treatment. Based on clinical research, ovulation is generally observed to occur approximately 5 to 10 days after completing the 5-day cycle of medication.

Q: Why is a pelvic exam often necessary before starting Serophene?

Regulatory guidelines mandate patient evaluation before starting or continuing treatment. This evaluation is required to rule out conditions such as pregnancy or the presence of ovarian enlargement or cysts between cycles.

Q: Is Serophene safe to use if I have a history of ovarian cysts?

Official prescribing guidelines state that Serophene is contraindicated (must not be used) in patients who have ovarian cysts or ovarian enlargement. This contraindication is generally lifted only if the enlargement is specifically attributed to Polycystic Ovarian Syndrome (PCOS).

Q: Does Serophene affect the results of home ovulation predictor kits?

Official prescribing notes indicate that home ovulation predictor kits (OPKs) should be used cautiously while taking the medication. This is because the medication may cause false positive results if the testing is performed too close to the time of drug administration.

Q: Does Serophene affect the lining of the uterus?

According to postmarketing reports, cases of changes to the uterine lining have been cited as a documented gynecologic effect. Specifically, this may include reports of reduced endometrial thickness, which is a pattern observed in some users. This effect is a documented physiological change associated with the medication’s anti-estrogen activity.

Q: What is the official information regarding weight changes while on Serophene?

Weight changes are not listed as a general side effect in the product documentation. However, regulatory warnings emphasize that rapid weight gain is a serious symptom associated with the development of severe Ovarian Hyperstimulation Syndrome (OHSS).

Q: What are the signs of ovarian hyperstimulation syndrome (OHSS) described by regulatory bodies?

Severe symptoms associated with OHSS can include, but are not limited to, stomach or lower stomach pain, stomach swelling (distension), and rapid weight gain.

Q: Are the hot flashes experienced with Serophene temporary?

The official product information indicates that vasomotor flushing, commonly known as hot flashes, is the most frequently reported side effect. Like visual symptoms and ovarian enlargement, hot flashes are generally considered reversible, similar to other specific effects.

Q: Does Serophene have any documented effects on blood pressure?

Yes, postmarketing reports citing adverse events indicate that the medication has been associated with changes in blood pressure. These reported reactions include cases of both hypertension (high blood pressure) and hypotension (low blood pressure).

Q: Does Serophene affect the length of the menstrual cycle?

Regulatory documents list abnormal uterine bleeding as a common to uncommon side effect of the medication. Such an effect may involve changes to the typical pattern or length of the menstrual cycle.

Q: What is the approximate chance of experiencing multiple births while using Serophene?

Studies and official product information indicate an increased risk of multiple births when using this medication. Regulatory data reports that multiple gestations occurred in about 7.9% of pregnancies reported during clinical trials, with 7% being twins.

Q: What is the stated risk of birth defects associated with Serophene use?

According to the official Fetal Risk Summary, human data from epidemiologic studies do not suggest an increased risk for congenital anomalies (birth defects) above the background population risk. However, the drug is contraindicated in pregnancy.

Q: What is the official safety classification of Serophene during pregnancy?

Regulatory bodies indicate that use during pregnancy is contraindicated (must not be used). Historically, Clomiphene Citrate was designated as Pregnancy Category X due to concerns about potential fetal harm, and pregnancy must be ruled out before each treatment cycle.

Q: Are there known risks for developing ovarian tumors mentioned in Serophene documentation?

Yes, postmarketing reports cite cases of ovarian tumors, including ovarian carcinoma. The official label notes a potential increased risk of ovarian cancer associated with use lasting more than six cycles.

Q: Is Serophene effective for inducing ovulation in women with hypothalamic amenorrhea?

Clomiphene is indicated for adult women experiencing ovulatory dysfunction. Official regulatory documents indicate that the drug is used in patient populations experiencing ovulatory dysfunction, including those with specific conditions such as amenorrhea-galactorrhea syndrome.

Q: What did the initial clinical trials for Serophene examine?

The clinical studies described in the official pharmacology section primarily examined the drug’s effectiveness in promoting follicular rupture and subsequent ovulation. These studies collected data to establish patterns of ovulation and pregnancy rates within the populations evaluated.

How should Serophene be stored and disposed of?

How to Store and Dispose of Serophene?

Serophene (clomiphene citrate) must be stored and handled according to specific regulatory guidelines to maintain its stability and ensure safety.

Official Storage Requirements

Clomiphene citrate tablets must be stored at Controlled Room Temperature, which is between 15 C and 30 C (59 F and 86 F). The product requires protection from heat, light, and excessive humidity. It is essential to keep the medication in the container it came in, with the lid tightly closed.

Child Safety and Disposal

All medication must be kept out of the sight and reach of children, ideally in a safe, locked location.

For disposal of unused or expired tablets, the official procedure is to not flush them down the toilet. Instead, the product should be mixed with an undesirable substance (such as dirt or coffee grounds), placed in a sealed bag or container, and discarded in the household trash.

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

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