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Pronunciation |
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(ES
trone) |
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U.S. Brand
Names |
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Aquest®;
Kestrone® |
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Generic
Available |
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Yes |
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Canadian Brand
Names |
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Femogen®; Neo-Estrone®;
Oestrilin® |
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Synonyms |
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Estrogenic Substance Aqueous |
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Pharmacological Index |
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Estrogen Derivative |
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Use |
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Hypogonadism; primary ovarian failure; vasomotor symptoms of menopause;
prostatic carcinoma; inoperable breast cancer, kraurosis vulvae, abnormal
uterine bleeding due to hormone imbalance |
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Pregnancy Risk
Factor |
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X |
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Contraindications |
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Thrombophlebitis, undiagnosed vaginal bleeding, hypersensitivity to estrogens
or any component, pregnancy |
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Warnings/Precautions |
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Use with caution in patients with asthma, epilepsy, migraine, diabetes,
cardiac or renal dysfunction; estrogens may cause premature closure of the
epiphyses in young individuals; safety and efficacy in children have not been
established; estrogens have been reported to increase the risk of endometrial
carcinoma, do not use estrogens during pregnancy |
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Adverse
Reactions |
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>10%:
Cardiovascular: Peripheral edema
Endocrine & metabolic: Enlargement of breasts, breast tenderness
Gastrointestinal: Nausea, anorexia, bloating
1% to 10%:
Central nervous system: Headache
Endocrine & metabolic: Increased libido
Gastrointestinal: Vomiting, diarrhea
<1%: Hypertension, thromboembolism, myocardial infarction, edema, stroke,
depression, dizziness, anxiety, chloasma, melasma, rash, amenorrhea, alterations
in frequency and flow of menses, decreased glucose tolerance, increased
triglycerides and LDL, GI distress, cholestatic jaundice, intolerance to contact
lenses, increased susceptibility to Candida infection, breast tumors
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Overdosage/Toxicology |
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Symptoms of overdose include fluid retention, jaundice, thrombophlebitis
Toxicity is unlikely following single exposures of excessive doses, any
treatment should be supportive and symptomatic |
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Drug
Interactions |
|
Decreased effect: Rifampin decreases estrogen serum concentrations
Increased toxicity:
Hydrocortisone increases corticosteroid toxic potential
Anticoagulants: Increases potential for thromboembolic events with
anticoagulants
Carbamazepine, tricyclic antidepressants, and corticosteroids; increased
thromboembolic potential with oral anticoagulants |
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Mechanism of
Action |
|
Estrone is a natural ovarian estrogenic hormone that is available as an
aqueous mixture of water insoluble estrone and water soluble estrone potassium
sulfate; all estrogens, including estrone, act in a similar manner; there is no
evidence that there are biological differences among various estrogen
preparations other than their ability to bind to cellular receptors inside the
target cells |
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Pharmacodynamics/Kinetics |
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Absorption: Readily absorbed from the GI tract |
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Usual Dosage |
|
Adults: I.M.:
Female:
Senile vaginitis and kraurosis vulvae: 0.1-0.5 mg 2-3 times/week; cyclical (3
weeks on and 1 week off)
Breast cancer (inoperable, progressing): 5 mg 3 or more times/week
Primary ovarian failure, hypogonadism: 0.1-1 mg/week, up to 2 mg/week in
single or divided doses; cyclical (3 weeks on and 1 week off)
Abnormal uterine bleeding: Brief courses of intensive therapy: 2-5 mg/day for
several days
Dosing adjustment in hepatic impairment:
Mild to moderate liver impairment: Dosage reduction of estrogens is
recommended
Severe liver impairment: Not recommended |
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Test
Interactions |
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Decreased antithrombin III
Decreased serum folate concentration
Increased prothrombin and factors VII, VIII, IX, X
Increased platelet aggregability
Increased thyroid binding globulin
Increased total thyroid hormone (T4)
Increased serum triglycerides/phospholipids |
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Mental Health: Effects
on Mental Status |
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May rarely cause anxiety or depression |
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Mental Health:
Effects on Psychiatric
Treatment |
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None reported |
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Dental Health: Local
Anesthetic/Vasoconstrictor
Precautions |
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No information available to require special precautions |
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Dental Health:
Effects on Dental Treatment |
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No effects or complications reported |
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Patient
Information |
|
This drug can only be given I.M. It is important to maintain schedule of drug
days and drug-free days. Periodic gynecologic exam and breast exams are
important. You may experience nausea or vomiting (small frequent meals may
help); dizziness or mental depression (use caution when driving); rash; loss of
scalp hair; enlargement/tenderness of breasts; or increased/decreased libido.
Report significant swelling of extremities, sudden acute pain in legs or calves,
chest, or abdomen; shortness of breath; severe headache or vomiting; weakness or
numbness of arms or legs; or unusual vaginal bleeding.
Pregnancy/breast-feeding precautions: Inform prescriber if you are pregnant.
Do not get pregnant during or for 1 month following therapy. Consult prescriber
for instruction on appropriate barrier contraceptive measures. This drug may
cause severe fetal defects. Consult prescriber if
breast-feeding. |
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Nursing
Implications |
|
May also be administered intramuscularly; administer at bedtime to minimize
occurrence of adverse effects; when administered I.V., drug should be
administered slowly to avoid the occurrence of a flushing
reaction |
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Dosage Forms |
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Injection: 2 mg/mL (10 mL, 30 mL); 5 mg/mL (10
mL) |
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