| CLOMID® |
Prescribing Information |
|
| (clomiphene citrate tablets USP) |
DESCRIPTION |
CLINICAL PHARMACOLOGY
PHARMACOKINETICS |
CLINICAL STUDIES
INDICATIONS AND USAGE
CONTRAINDICATIONS |
WARNINGS
PRECAUTIONS |
ADVERSE REACTIONS
DRUG ABUSE AND DEPENDENCE |
OVERDOSAGE
DOSAGE AND ADMINISTRATION |
HOW SUPPLIED
DESCRIPTION
CLOMID (clomiphene citrate tablets USP) is an orally administered,
nonsteroidal, ovulatory stimulant designated chemically as 2-[p-(2-chloro-1,2-diphenylvinyl)phenoxy] triethylamine
citrate (1:1). It has the molecular formula of C26H28C1NO • C6H8O7
and a molecular weight of 598.09. It is represented structurally as:

Clomiphene citrate is a white to pale yellow, essentially odorless,
crystalline powder. It is freely soluble in methanol; soluble in ethanol; slightly soluble in acetone, water,
and chloroform; and insoluble in ether.
CLOMID is a mixture of two geometric isomers [cis (zuclomiphene) and trans (enclomiphene)] containing between
30% and 50% of the cis-isomer.
Each white scored tablet contains 50 mg clomiphene citrate USP. The tablet also contains the following inactive
ingredients: corn starch, lactose, magnesium stearate, pregelatinized cornstarch, and sucrose.
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CLINICAL PHARMACOLOGY
Action
CLOMID is a drug of considerable pharmacologic potency. With careful selection and proper management of
the patient, CLOMID has been demonstrated to be a useful therapy for the anovulatory patient desiring pregnancy.
Clomiphene citrate is capable of interacting with estrogen-receptor-containing tissues, including the hypothalamus,
pituitary, ovary, endometrium, vagina, and cervix. It may compete with estrogen for estrogen-receptor-binding sites
and may delay replenishment of intracellular estrogen receptors. Clomiphene citrate initiates a series of endocrine
events culminating in a preovulatory gonadotropin surge and subsequent follicular rupture. The first endocrine event
in response to a course of clomiphene therapy is an increase in the release of pituitary gonadotropins. This initiates
steroidogenesis and folliculogenesis, resulting in growth of the ovarian follicle and an increase in the circulating
level of estradiol. Following ovulation, plasma progesterone and estradiol rise and fall as they would in a normal
ovulatory cycle.
Available data suggest that both the estrogenic and antiestrogenic properties of clomiphene may participate in the
initiation of ovulation. The two clomiphene isomers have been found to have mixed estrogenic and antiestrogenic effects,
which may vary from one species to another. Some data suggest that zuclomiphene has greater estrogenic activity than
enclomiphene.
Clomiphene citrate has no apparent progestational, androgenic, or antiandrogenic effects and does not appear to
interfere with pituitary-adrenal or pituitary-thyroid function.
Although there is no evidence of a “carryover effect” of CLOMID, spontaneous ovulatory menses have been noted
in some patients after CLOMID therapy.
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Pharmacokinetics
Based on early studies with 14C-labeled clomiphene citrate, the drug was shown to be readily
absorbed orally in humans and excreted principally in the feces. Cumulative urinary and fecal excretion
of the 14C averaged about 50% of the oral dose and 37% of an intravenous dose after 5 days.
Mean urinary excretion was approximately 8% with fecal excretion of about 42%.
Some 14C label was still present in the feces 6 weeks after administration. Subsequent single-dose
studies in normal volunteers showed that zuclomiphene (cis) has a longer half-life than enclomiphene (trans).
Detectable levels of zuclomiphene persisted for longer than a month in these subjects. This may be suggestive
of stereo-specific enterohepatic recycling or sequestering of the zuclomiphene. Thus, it is possible that some
active drug may remain in the body during early pregnancy in women who conceive in the menstrual cycle during
CLOMID therapy.
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CLINICAL STUDIES
During clinical investigations, 7578 patients received CLOMID,
some of whom had impediments to ovulation other than ovulatory dysfunction (see INDICATIONS AND USAGE).
In those clinical trials, successful therapy characterized by pregnancy occurred in approximately 30% of
these patients.
There were a total of 2635 pregnancies reported during the clinical trial period. Of those pregnancies,
information on outcome was only available for 2369 of the cases. Table 1 summarizes the outcome of these cases.
Of the reported pregnancies, the incidence of multiple pregnancies was 7.98%: 6.9% twin, 0.5% triplet, 0.3%
quadruplet, and 0.1% quintuplet. Of the 165 twin pregnancies for which sufficient information was available,
the ratio of monozygotic to dizygotic twins was about 1:5. Table 1 reports the survival rate of the live
multiple births.
A sextuplet birth was reported after completion of original clinical studies; none of the sextuplets
survived (each weighed less than 400 g), although each appeared grossly normal.
Table 1. Outcome of Reported Pregnancies in Clinical Trials (n = 2369)
| Outcome |
Total Number
of Pregnancies |
Survival
Rate
|
Pregnancy Wastage
Spontaneous Abortions
Stillbirths |
483*
24
|
|
Live Births
Single Births
Multiple Births |
1697
165
|
98.16%†
83.25%†
|
*Includes 28 ectopic pregnancies, 4 hydatiform moles, and 1 fetus
papyraceous.
†Indicates percentage of surviving infants from these pregnancies.
The overall survival of infants from multiple pregnancies including spontaneous abortions, stillbirths, and
neonatal deaths is 73%.
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INDICATIONS
AND USAGE
CLOMID is indicated for the treatment of ovulatory dysfunction
in women desiring pregnancy. Impediments to achieving pregnancy must be excluded or adequately treated
before beginning CLOMID therapy. Those patients most likely to achieve success with clomiphene therapy
include patients with polycystic ovary syndrome (see WARNINGS: Ovarian Hyperstimulation Syndrome),
amenorrhea-galactorrhea syndrome, psychogenic amenorrhea, post-oral-contraceptive amenorrhea, and
certain cases of secondary amenorrhea of undetermined etiology.
Properly timed coitus in relationship to ovulation is important. A basal body temperature graph or other
appropriate tests may help the patient and her physician determine if ovulation occurred. Once ovulation
has been established, each course of CLOMID should be started on or about the 5th day of the cycle.
Long-term cyclic therapy is not recommended beyond a total of about six cycles (including three ovulatory
cycles). (See DOSAGE AND ADMINISTRATION and PRECAUTIONS.)
CLOMID is indicated only in patients with demonstrated ovulatory dysfunction who meet the conditions
described below (see CONTRAINDICATIONS):
| 1. |
Patients who are not pregnant. |
| 2. |
Patients without ovarian cysts. CLOMID should not be used in patients with ovarian
enlargement except those with polycystic ovary syndrome. Pelvic examination is necessary
prior to the first and each subsequent course of CLOMID treatment. |
| 3. |
Patients without abnormal vaginal bleeding. If abnormal vaginal bleeding is present,
the patient should be carefully evaluated to ensure that neoplastic lesions are not present. |
| 4. |
Patients with normal liver function. |
In addition, patients selected for CLOMID therapy should
be evaluated in regard to the following:
| 1. |
Estrogen Levels. Patients should have adequate levels of endogenous estrogen
(as estimated from vaginal smears, endometrial biopsy, assay of urinary estrogen, or
from bleeding in response to progesterone). Reduced estrogen levels, while less favorable,
do not preclude successful therapy. |
| 2. |
Primary Pituitary or Ovarian Failure. CLOMID therapy cannot be expected to
substitute for specific treatment of other causes of ovulatory failure. |
| 3. |
Endometriosis and Endometrial Carcinoma. The incidence of endometriosis and
endometrial carcinoma increases with age as does the incidence of ovulatory disorders.
Endometrial biopsy should always be performed prior to CLOMID therapy in this population. |
| 4. |
Other Impediments to Pregnancy. Impediments to pregnancy can include thyroid
disorders, adrenal disorders, hyperprolactinemia, and male factor infertility. |
| 5. |
Uterine Fibroids. Caution should be exercised when using CLOMID in patients
with uterine fibroids due to the potential for further enlargement of the fibroids. |
There are no adequate or well-controlled studies
that demonstrate the effectiveness of CLOMID in the treatment of male infertility. In addition,
testicular tumors and gynecomastia have been reported in males using clomiphene. The cause and
effect relationship between reports of testicular tumors and the administration of CLOMID is
not known.
Although the medical literature suggests various methods, there is no universally accepted standard
regimen for combined therapy (ie, CLOMID in conjunction with other ovulation-inducing drugs). Similarly,
there is no standard CLOMID regimen for ovulation induction in in vitro fertilization programs to produce
ova for fertilization and reintroduction. Therefore, CLOMID is not recommended for these uses.
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CONTRAINDICATIONS
Hypersensitivity
CLOMID is contraindicated in patients with a known hypersensitivity or allergy to clomiphene citrate or to any of its ingredients.
Pregnancy
CLOMID should not be administered during pregnancy. CLOMID may cause fetal harm in animals
(see Animal Fetotoxicity). Although no causative evidence of a deleterious effect of CLOMID
therapy on the human fetus has been established, there have been reports of birth anomalies
which, during clinical studies, occurred at an incidence within the range reported for the
general population (see Fetal/Neonatal Anomalies and Mortality; ADVERSE REACTIONS).
To avoid inadvertent CLOMID administration during early pregnancy, appropriate tests should be
utilized during each treatment cycle to determine whether ovulation occurs. The patient should
be evaluated carefully to exclude pregnancy, ovarian enlargement, or ovarian cyst formation
between each treatment cycle. The next course of CLOMID therapy should be delayed until these
conditions have been excluded.
Fetal/Neonatal Anomalies and Mortality. The following fetal abnormalities have been reported
subsequent to pregnancies following ovulation induction therapy with CLOMID during clinical
trials. Each of the following fetal abnormalities were reported at a rate of <1% (experiences
are listed in order of decreasing frequency): Congenital heart lesions, Down syndrome, club
foot, congenital gut lesions, hypospadias, microcephaly, harelip and cleft palate, congenital
hip, hemangioma, undescended testicles, polydactyly, conjoined twins and teratomatous malformation,
patent ductus arteriosus, amaurosis, arteriovenous fistula, inguinal hernia, umbilical hernia,
syndactyly, pectus excavatum, myopathy, dermoid cyst of scalp, omphalocele, spina bifida occulta,
ichthyosis, and persistent lingual frenulum. Neonatal death and fetal death/stillbirth in infants
with birth defects have also been reported at a rate of <1%. The overall incidence of reported
birth anomalies from pregnancies associated with maternal CLOMID ingestion during clinical
studies was within the range of that reported for the general population.
In addition, reports of birth anomalies have been received during postmarketing surveillance
of CLOMID (see ADVERSE REACTIONS).
Animal Fetotoxicity. Oral administration of clomiphene citrate to pregnant rats during organogenesis
at doses of 1 to 2 mg/kg/day resulted in hydramnion and weak, edematous fetuses with wavy ribs and
other temporary bone changes. Doses of 8 mg/kg/day or more also caused increased resorptions and dead
fetuses, dystocia, and delayed parturition, and 40 mg/kg/day resulted in increased maternal mortality.
Single doses of 50 mg/kg caused fetal cataracts, while 200 mg/kg caused cleft palate.
Following injection of clomiphene citrate 2 mg/kg to mice and rats during pregnancy, the offspring
exhibited metaplastic changes of the reproductive tract. Newborn mice and rats injected during the
first few days of life also developed metaplastic changes in uterine and vaginal mucosa, as well as
premature vaginal opening and anovulatory ovaries. These findings are similar to the abnormal
reproductive behavior and sterility described with other estrogens and antiestrogens.
In rabbits, some temporary bone alterations were seen in fetuses from dams given oral doses of 20
or 40 mg/kg/day during pregnancy, but not following 8 mg/kg/day. No permanent malformations were
observed in those studies. Also, rhesus monkeys given oral doses of 1.5 to 4.5 mg/kg/day for various
periods during pregnancy did not have any abnormal offspring.
Liver Disease. CLOMID therapy is contraindicated in patients with liver disease or a history of
liver dysfunction (see also INDICATIONS AND USAGE and ADVERSE REACTIONS).
Abnormal Uterine Bleeding. CLOMID is contraindicated in patients with abnormal uterine bleeding
of undetermined origin (see INDICATIONS AND USAGE).
Ovarian Cysts. CLOMID is contraindicated in patients with ovarian cysts or enlargement not due to
polycystic ovarian syndrome (see INDICATIONS AND USAGE and WARNINGS).
Other. CLOMID is contraindicated in patients with uncontrolled thyroid or adrenal dysfunction or in
the presence of an organic intracranial lesion such as pituitary tumor (see INDICATIONS AND USAGE).
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WARNINGS
Visual Symptoms
Patients should be advised that blurring or other visual symptoms such as spots or flashes (scintillating
scotomata) may occasionally occur during therapy with CLOMID. These visual symptoms increase in incidence
with increasing total dose or therapy duration and generally disappear within a few days or weeks after
CLOMID is discontinued. Patients should be warned that these visual symptoms may render such activities
as driving a car or operating machinery more hazardous than usual, particularly under conditions of
variable lighting.
These visual symptoms appear to be due to intensification and prolongation of afterimages. Symptoms often
first appear or are accentuated with exposure to a brightly lit environment. While measured visual acuity
usually has not been affected, a study patient taking 200 mg CLOMID daily developed visual blurring on the
7th day of treatment, which progressed to severe diminution of visual acuity by the 10th day. No other
abnormality was found, and the visual acuity returned to normal on the 3rd day after treatment was stopped.
Ophthalmologically definable scotomata and retinal cell function (electroretinographic) changes have also
been reported. A patient treated during clinical studies developed phosphenes and scotomata during prolonged
CLOMID administration, which disappeared by the 32nd day after stopping therapy.
Postmarketing surveillance of adverse events has also revealed other visual signs and symptoms during CLOMID
therapy (see ADVERSE REACTIONS).
While the etiology of these visual symptoms is not yet understood, patients with any visual symptoms should
discontinue treatment and have a complete ophthalmological evaluation carried out promptly.
Ovarian Hyperstimulation Syndrome
The ovarian hyperstimulation syndrome (OHSS) has been reported to occur in patients receiving
clomiphene citrate therapy for ovulation induction. In some cases, OHSS occurred following cyclic
use of clomiphene citrate therapy or when clomiphene citrate was used in combination with gonadotropins.
Transient liver function test abnormalities suggestive of hepatic dysfunction, which may be accompanied
by morphologic changes on liver biopsy, have been reported in association with ovarian hyperstimulation
syndrome (OHSS).
OHSS is a medical event distinct from uncomplicated ovarian enlargement. The clinical signs of this
syndrome in severe cases can include gross ovarian enlargement, gastrointestinal symptoms, ascites,
dyspnea, oliguria, and pleural effusion. In addition, the following symptoms have been reported in
association with this syndrome: pericardial effusion, anasarca, hydrothorax, acute abdomen, hypotension,
renal failure, pulmonary edema, intraperitoneal and ovarian hemorrhage, deep venous thrombosis, torsion
of the ovary, and acute respiratory distress. The early warning signs of OHSS are abdominal pain and
distention, nausea, vomiting, diarrhea, and weight gain. Elevated urinary steroid levels, varying
degrees of electrolyte imbalance, hypovolemia, hemoconcentration, and hypoproteinemia may occur.
Death due to hypovolemic shock, hemoconcentration, or thromboembolism has occurred. Due to fragility
of enlarged ovaries in severe cases, abdominal and pelvic examination should be performed very
cautiously. If conception results, rapid progression to the severe form of the syndrome may occur.
To minimize the hazard associated with occasional abnormal ovarian enlargement associated
with CLOMID therapy, the lowest dose consistent with expected clinical results should be
used. Maximal enlargement of the ovary, whether physiologic or abnormal, may not occur
until several days after discontinuation of the recommended dose of CLOMID. Some patients
with polycystic ovary syndrome who are unusually sensitive to gonadotropin may have an
exaggerated response to usual doses of CLOMID. Therefore, patients with polycystic ovary
syndrome should be started on the lowest recommended dose and shortest treatment duration
for the first course of therapy (see DOSAGE AND ADMINISTRATION).
If enlargement of the ovary occurs, additional CLOMID therapy should not be given until
the ovaries have returned to pretreatment size, and the dosage or duration of the next
course should be reduced. Ovarian enlargement and cyst formation associated with CLOMID
therapy usually regresses spontaneously within a few days or weeks after discontinuing
treatment. The potential benefit of subsequent CLOMID therapy in these cases should
exceed the risk. Unless surgical indication for laparotomy exists, such cystic enlargement
should always be managed conservatively.
A causal relationship between ovarian hyperstimulation and ovarian cancer has not been
determined. However, because a correlation between ovarian cancer and nulliparity,
infertility, and age has been suggested, if ovarian cysts do not regress spontaneously,
a thorough evaluation should be performed to rule out the presence of ovarian neoplasia.
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PRECAUTIONS
General
Careful attention should be given to the selection of candidates for CLOMID therapy. Pelvic examination
is necessary prior to CLOMID treatment and before each subsequent course (see CONTRAINDICATIONS and WARNINGS).
Information for Patients
The purpose and risks of CLOMID therapy should be presented to the patient before starting treatment. It
should be emphasized that the goal of CLOMID therapy is ovulation for subsequent pregnancy. The physician
should counsel the patient with special regard to the following potential risks:
Visual Symptoms: Advise that blurring or other visual symptoms occasionally may occur during or
shortly after CLOMID therapy. Warn that visual symptoms may render such activities as driving a car or
operating machinery more hazardous than usual, particularly under conditions of variable lighting
(see WARNINGS).
The patient should be instructed to inform the physician whenever any unusual visual symptoms occur.
If the patient has any visual symptoms, treatment should be discontinued and complete ophthalmologic
evaluation performed.
Abdominal/Pelvic Pain or Distention: Ovarian enlargement may occur during or shortly after
therapy with CLOMID. To minimize the risks associated with ovarian enlargement, the patient should
be instructed to inform the physician of any abdominal or pelvic pain, weight gain, discomfort, or
distention after taking CLOMID (see WARNINGS).
Multiple Pregnancy: Inform the patient that there is an increased chance of multiple pregnancy,
including bilateral tubal pregnancy and coexisting tubal and intrauterine pregnancy, when conception
occurs in relation to CLOMID therapy. The potential complications and hazards of multiple pregnancy
should be explained.
Pregnancy Wastage and Birth Anomalies: The physician should explain the assumed risk of any
pregnancy, whether ovulation is induced with the aid of CLOMID or occurs naturally. The patient
should be informed of the greater risks associated with certain characteristics or conditions of
any pregnant woman, eg, age of female and male partner, history of spontaneous abortions, Rh
genotype, abnormal menstrual history, infertility history, organic heart disease, diabetes,
exposure to infectious agents such as rubella, familial history of birth anomaly, that may be
pertinent to the patient for whom CLOMID is being considered. Based upon the evaluation of the
patient, genetic counseling may be indicated.
The overall incidence of reported birth anomalies from pregnancies associated with maternal CLOMID
ingestion during the investigational studies was within the range of that reported in published
references for the general population. (See CONTRAINDICATIONS: Pregnancy.)
During clinical investigation, the experience from patients with known pregnancy outcome (Table 1)
shows a spontaneous abortion rate of 20.4% and stillbirth rate of 1.0%. (See CLINICAL PHARMACOLOGY.)
Drug Interactions
Drug interactions with CLOMID have not been documented.
Carcinogenesis, Mutagenesis, Impairment of Fertility
Long-term toxicity studies in animals have not been performed to evaluate the carcinogenic or mutagenic
potential of clomiphene citrate.
Oral administration of CLOMID to male rats at doses of 0.3 or 1 mg/kg/day caused decreased fertility,
while higher doses caused temporary infertility. Oral doses of 0.1 mg/kg/day in female rats temporarily
interrupted the normal cyclic vaginal smear pattern and prevented conception. Doses of 0.3 mg/kg/day
slightly reduced the number of ovulated ova and corpora lutea, while 3 mg/kg/day inhibited ovulation.
Pregnancy
Pregnancy Category X. (See CONTRAINDICATIONS.)
Nursing Mothers
It is not known whether CLOMID is excreted in human milk. Because many drugs are excreted in human milk,
caution should be exercised if CLOMID is administered to a nursing woman. In some patients, CLOMID may
reduce lactation.
Ovarian Cancer
Prolonged use of clomiphene citrate tablets USP may increase the risk of a borderline or invasive ovarian
tumor (see ADVERSE REACTIONS).
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ADVERSE
REACTIONS
Clinical Trial Adverse Events. CLOMID, at recommended dosages,
is generally well tolerated. Adverse reactions usually have been mild and transient and most have disappeared
promptly after treatment has been discontinued. Adverse experiences reported in patients treated with clomiphene
citrate during clinical studies are shown in Table 2.
Table 2. Incidence of Adverse Events in Clinical Studies (Events Greater than 1%) (n = 8029*)
| Adverse Event |
% |
Ovarian Enlargement
Vasomotor Flushes
Abdominal-Pelvic Discomfort/Distention/Bloating
Nausea and Vomiting
Breast Discomfort
Visual Symptoms
Blurred vision, lights, floaters, waves,
unspecified visual complaints, photophobia,
diplopia, scotomata, phosphenes
Headache
Abnormal Uterine Bleeding
Intermenstrual spotting, menorrhagia |
13.6
10.4
5.5
2.2
2.1
1.5
1.3
1.3
|
*Includes 498 patients whose reports may have been
duplicated in the event totals and could not be distinguished as such. Also, excludes 47
patients who did not report symptom data.
The following adverse events have been reported in fewer than 1% of patients in clinical trials:
Acute abdomen, appetite increase, constipation, dermatitis or rash, depression, diarrhea, dizziness,
fatigue, hair loss/dry hair, increased urinary frequency/volume, insomnia, light-headedness, nervous
tension, vaginal dryness, vertigo, weight gain/loss.
Patients on prolonged CLOMID therapy may show elevated serum levels of desmosterol. This is most likely
due to a direct interference with cholesterol synthesis. However, the serum sterols in patients receiving
the recommended dose of CLOMID are not significantly altered. Ovarian cancer has been infrequently reported
in patients who have received fertility drugs. Infertility is a primary risk factor for ovarian cancer;
however, epidemiology data suggest that prolonged use of clomiphene may increase the risk of a borderline
or invasive ovarian tumor.
Postmarketing Adverse Events
The following adverse experiences were reported spontaneously with CLOMID. The cause and effect relationship
of the listed events to the administration of CLOMID is not known.
Dermatologic: Acne, allergic reaction, erythema, erythema multiforme, erythema nodosum, hypertrichosis, pruritus
Central Nervous System: Migraine headache, paresthesia, seizure, stroke, syncope
Psychiatric: Anxiety, irritability, mood changes, psychosis
Visual Disorders: Abnormal accommodation, cataract, eye pain, macular edema, optic neuritis, photopsia,
posterior vitreous detachment, retinal hemorrhage, retinal thrombosis, retinal vascular spasm, temporary loss
of vision
Cardiovascular: Arrhythmia, chest pain, edema, hypertension, palpitation, phlebitis, pulmonary embolism,
shortness of breath, tachycardia, thrombophlebitis
Musculoskeletal: Arthralgia, back pain, myalgia
Hepatic: Transaminases increased, hepatitis
Neoplasms: Liver (hepatic hemangiosarcoma, liver cell adenoma, hepatocellular carcinoma);
breast (fibrocystic disease, breast carcinoma); endometrium (endometrial carcinoma); nervous system
(astrocytoma, pituitary tumor, prolactinoma, neurofibromatosis, glioblastoma multiforme, brain abcess);
ovary (luteoma of pregnancy, dermoid cyst of the ovary, ovarian carcinoma); trophoblastic (hydatiform
mole, choriocarcinoma); miscellaneous (melanoma, myeloma, perianal cysts, renal cell carcinoma, Hodgkin's
lymphoma, tongue carcinoma, bladder carcinoma); and neoplasms of offspring (neuroectodermal tumor, thyroid
tumor, hepatoblastoma, lymphocytic leukemia)
Genitourinary: Endometriosis, ovarian cyst (ovarian enlargement or cysts could, as such,
be complicated by adnexal torsion), ovarian hemorrhage, tubal pregnancy, uterine hemorrhage
Body as a Whole: Fever, tinnitus, weakness
Other: Leukocytosis, thyroid disorder
Fetal/Neonatal Anomalies. The following fetal abnormalities have also been reported during
postmarketing surveillance: delayed development; abnormal bone development including skeletal
malformations of the skull, face, nasal passages, jaw, hand, limb (ectromelia including amelia,
hemimelia, and phocomelia), foot, and joints; tissue malformations including imperforate anus,
tracheoesophageal fistula, diaphragmatic hernia, renal agenesis and dysgenesis, and malformations
of the eye and lens (cataract), ear, lung, heart (ventricular septal defect and tetralogy of Fallot),
and genitalia; as well as dwarfism, deafness, mental retardation, chromosomal disorders, and neural
tube defects (including anencephaly).
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DRUG ABUSE AND DEPENDENCE
Tolerance, abuse, or dependence with CLOMID has not been reported.
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OVERDOSAGE
Signs and Symptoms
Toxic effects accompanying acute overdosage of CLOMID have not been reported. Signs and symptoms of
overdosage as a result of the use of more than the recommended dose during CLOMID therapy include
nausea, vomiting, vasomotor flushes, visual blurring, spots or flashes, scotomata, ovarian enlargement
with pelvic or abdominal pain. (See CONTRAINDICATIONS: Ovarian Cyst.)
Oral LD50. The acute oral LD50 of CLOMID is 1700 mg/kg in mice and 5750 mg/kg in rats.
The toxic dose in humans is not known.
Dialysis. It is not known if CLOMID is dialyzable.
Treatment
In the event of overdose, appropriate supportive measures should be employed in addition to
gastrointestinal decontamination.
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DOSAGE
AND ADMINISTRATION
General Considerations
The workup and treatment of candidates for CLOMID therapy should be supervised by physicians experienced
in management of gynecologic or endocrine disorders. Patients should be chosen for therapy with CLOMID
only after careful diagnostic evaluation (see INDICATIONS AND USAGE). The
plan of therapy should be outlined in advance. Impediments to achieving the goal of therapy must be
excluded or adequately treated before beginning CLOMID. The therapeutic objective should be balanced
with potential risks and discussed with the patient and others involved in the achievement of a pregnancy.
Ovulation most often occurs from 5 to 10 days after a course of CLOMID. Coitus should be timed to
coincide with the expected time of ovulation. Appropriate tests to determine ovulation may be useful
during this time.
Recommended Dosage
Treatment of the selected patient should begin with a low dose, 50 mg daily (1 tablet) for 5 days. The dose
should be increased only in those patients who do not ovulate in response to cyclic 50 mg CLOMID. A low dosage
or duration of treatment course is particularly recommended if unusual sensitivity to pituitary gonadotropin
is suspected, such as in patients with polycystic ovary syndrome (see WARNINGS; Ovarian Hyperstimulation Syndrome).
The patient should be evaluated carefully to exclude pregnancy, ovarian enlargement, or ovarian cyst formation
between each treatment cycle.
If progestin-induced bleeding is planned, or if spontaneous uterine bleeding occurs prior to therapy, the regimen
of 50 mg daily for 5 days should be started on or about the 5th day of the cycle. Therapy may be started at any
time in the patient who has had no recent uterine bleeding. When ovulation occurs at this dosage, there is no
advantage to increasing the dose in subsequent cycles of treatment.
If ovulation does not appear to occur after the first course of therapy, a second course of 100 mg daily (two
50 mg tablets given as a single daily dose) for 5 days should be given. This course may be started as early
as 30 days after the previous one after precautions are taken to exclude the presence of pregnancy. Increasing
the dosage or duration of therapy beyond 100 mg/day for 5 days is not recommended.
The majority of patients who are going to ovulate will do so after the first course of therapy. If
ovulation does not occur after three courses of therapy, further treatment with CLOMID is not
recommended and the patient should be reevaluated. If three ovulatory responses occur, but pregnancy
has not been achieved, further treatment is not recommended. If menses does not occur after an ovulatory
response, the patient should be reevaluated. Long-term cyclic therapy is not recommended beyond a total
of about six cycles (see PRECAUTIONS).
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HOW SUPPLIED
NDC 0068-0226-30: 50 mg tablets in cartons of 30
Tablets are round, white, scored, and debossed CLOMID 50.
Store tablets at controlled room temperature 59-86°F (15-30°C). Protect from heat, light, and excessive
humidity, and store in closed containers.
Rx only
sanofi-aventis U.S. LLC
Bridgewater, NJ 08807
Revised June 2006
©2006 sanofi-aventis U.S. LLC
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