Brand and Other Names:Emcyt
- Classes: Antineoplastics, Hormones
Dosing & Uses
Dosage Forms & Strengths
Palliative treatment of metastatic and/or progressive prostate carcinoma
Treat for 30-90 days to determine benefits of continued therapy; continue treatment as long as favorable response lasts
Take 1 hr before or 2 hr after meals
Avoid calcium-rich foods
Serious - Use Alternative
Significant - Monitor Closely
Breast tenderness and enlargement
Congestive heart failure
Abnormality of hepatic enzymes and/or bilirubin
Hypersensitivity to estradiol or nitrogen mustard
Active thrombophlebitis or thromboembolic disorder, except when tumor mass is cause of thromboembolic phenomenon & benefits of therapy outweigh risk
Increased risk of thrombosis, including fatal & non-fatal MI
Liver dysfunction, metabolic bone disease associated with hypercalcemia, renal insufficiency
History of thromoboembolic phenomenon especially associated with estrogen therapy
Decreased glucose tolerance-monitor diabetics
Risk of HTN-monitor BP periodically
May cause fluid retention with exacerbation of CHF, peripheral edema, or conditions influenced by fluid retention, such as epilepsy, migraine, renal dysfunction
May cause gynecomastia & impotence
Allergic reactions, including angioedema of airway has been reported
Avoid becoming pregnant
Pregnancy & Lactation
Pregnancy Category: X
Lactation: not intended for use in women
A:Generally acceptable. Controlled studies in pregnant women show no evidence of fetal risk.
B:May be acceptable. Either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies done and showed no risk.
C:Use with caution if benefits outweigh risks. Animal studies show risk and human studies not available or neither animal nor human studies done.
D:Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk.
X:Do not use in pregnancy. Risks involved outweigh potential benefits. Safer alternatives exist.
NA:Information not available.
Mechanism of Action
Has the effects of estradiol and nitrogen mustard combination. It may inhibit tubulin function by binding to microtubule proteins. Antitumor effects may result from estrogenic effect. Plasma testosterone levels decrease while estrogen levels increase
Absorption: 75% (PO)
Metabolite: estramustine, estradiol, estrone
Half-life elimination: 15-24hr
Excretion: Feces (2.9-4.8%)
Time to peak serum: 2-3 hr
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