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Pronunciation |
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(bye
ka LOO ta
mide) |
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U.S. Brand
Names |
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Casodex® |
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Generic
Available |
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No |
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Pharmacological Index |
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Androgen |
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Use |
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In combination therapy with LHRH agonist analogues in treatment of advanced
prostatic carcinoma |
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Pregnancy Risk
Factor |
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X |
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Contraindications |
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Known hypersensitivity to drug or any components of the product;
pregnancy |
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Adverse
Reactions |
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>10%: Endocrine & metabolic: Hot flashes (49%)
greater than or equal to 2% to <5%:
Cardiovascular: Angina pectoris, congestive heart failure, edema
Central nervous system: Anxiety, depression, confusion, somnolence,
nervousness, fever, chills
Dermatologic: Dry skin, pruritus, alopecia
Endocrine & metabolic: Breast pain, diabetes mellitus, decreased libido,
dehydration, gout
Gastrointestinal: Anorexia, dyspepsia, rectal hemorrhage, xerostomia, melena,
weight gain
Genitourinary: Polyuria, urinary impairment, dysuria, urinary retention,
urinary urgency
Hepatic: Alkaline phosphatase increased
Neuromuscular & skeletal: Myasthenia, arthritis, myalgia, leg cramps,
pathological fracture, neck pain, hypertonia, neuropathy
Renal: Creatinine increased
Respiratory: Cough increased, pharyngitis, bronchitis, pneumonia, rhinitis,
lung disorder
Miscellaneous: Sepsis, neoplasma
<1%: Diarrhea (0.5%) |
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Overdosage/Toxicology |
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Symptoms of overdose include hypoactivity, ataxia, anorexia, vomiting, slow
respiration, lacrimation
Treatment is supportive, dialysis not of benefit; induce vomiting
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Drug
Interactions |
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In vitro displacement of warfarin by
bicalutamide |
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Stability |
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Store at room temperature |
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Mechanism of
Action |
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Pure nonsteroidal antiandrogen that binds to androgen receptors; specifically
a competitive inhibitor for the binding of dihydrotestosterone and testosterone;
prevents testosterone stimulation of cell growth in prostate
cancer |
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Pharmacodynamics/Kinetics |
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Absorption: Rapid and complete
Protein binding: 96%
Metabolism: Extensive; stereospecific metabolism
Half-life: Up to 10 days; active enantiomer is 5.8 days
Elimination: Not yet studied |
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Usual Dosage |
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Adults: Oral: 1 tablet once daily (morning or evening), with or without food.
It is recommended that bicalutamide be taken at the same time each day; start
treatment with bicalutamide at the same time as treatment with an LHRH analog.
Dosage adjustment in liver impairment: Limited data in subjects with
severe hepatic impairment suggest that excretion of bicalutamide may be delayed
and could lead to further accumulation. Use with caution in patients with
moderate to severe hepatic impairment. |
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Dietary
Considerations |
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May be administered with or without food |
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Monitoring
Parameters |
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Serum prostate-specific antigen, alkaline phosphatase, acid phosphatase, or
prostatic acid phosphatase; prostate gland dimensions; skeletal survey; liver
scans; chest x-rays; physical exam every 3 months; bone scan every 3-6 months;
CBC, LFTs, EKG, echocardiograms, and serum testosterone and luteinizing hormone
(periodically) |
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Mental Health: Effects
on Mental Status |
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May produce anxiety, depression, and confusion |
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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 |
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Take as directed and do not alter dose or discontinue without consulting
prescriber. Take at the same time each day with or without food. Void before
taking medication. Diabetics should monitor serum glucose closely and notify
prescriber of changes; this medication can alter hypoglycemic requirements. You
may lose your hair and experience impotency. May cause dizziness, confusion, or
drowsiness (use caution when driving or engaging in tasks that require alertness
until response to drug is known); nausea or vomiting (small frequent meals,
frequent mouth care, sucking lozenges, or chewing gum may help); or constipation
(increased dietary fiber, fruit, or fluid and increased exercise may help).
Report easy bruising or bleeding; yellowing of skin or eyes; change in color of
urine or stool; unresolved changes in CNS (nervousness, chills, insomnia,
somnolence); skin rash, redness, or irritation; chest pain or palpitations;
difficulty breathing; urinary retention or inability to void; muscle weakness,
tremors, or pain; persistent nausea, vomiting, diarrhea, or constipation; or
other unusual signs or adverse reactions. Pregnancy
precautions/breast-feeding: This drug will cause fetal abnormalities - use
barrier contraceptives. Inform prescriber if
breast-feeding. |
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Nursing
Implications |
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Administer at the same time as treatment with LHRH
analog |
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Dosage Forms |
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Tablet: 50 mg |
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References |
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Blackledge GR, Cockshott ID, and Furr BJ,
"Casodex (Bicalutamide): Overview of a New Antiandrogen Developed for the Treatment of Prostate Cancer,"
Eur Urol, 1997, 31(Suppl 2):30-9.
Kennealey GT and Furr BJ,
"Use of the Nonsteroidal Antiandrogen Casodex in Advanced Prostatic Carcinoma,"
Urol Clin North Am, 1991, 18(1):99-110.
Kolvenbag GJ and Blackledge GR,
"Worldwide Activity and Safety of Bicalutamide: A Summary Review,"
Urology, 1996, 47(1A Suppl):70-9.
Kolvenbag GJ, Blackledge GR, and Gotting-Smith K,
"Bicalutamide (Casodex) in the Treatment of Prostate Cancer: History of Clinical Development,"
Prostate, 1998, 34(1):61-72.
Tyrrell CJ,
"Casodex: A Pure Nonsteroidal Antiandrogen Used as Monotherapy in Advanced Prostate Cancer,"
Prostate Suppl, 1992, 4:97-104.
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