flutamide

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flutamide

 [floo´tah-mīd]
a nonsteroidal antiandrogen administered orally in the treatment of advanced or metastatic prostatic carcinoma.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

flutamide

APO-Flutamide (CA), Drogenil (UK), Euflex (CA), Novo-Flutamide (CA), PMS-Flutamide (CA)

Pharmacologic class: Antiandrogen

Therapeutic class: Antineoplastic

Pregnancy risk category D

Action

Exerts potent antiandrogenic activity at cellular level by inhibiting androgen uptake or nuclear binding of androgen

Availability

Capsules: 125 mg

Indications and dosages

Metastatic prostate cancer

Adults: 250 mg P.O. t.i.d. q 8 hours, given with luteinizing hormone-releasing hormone (LHRH) analog. Total daily dosage is 750 mg.

Off-label uses

• Benign prostatic hypertrophy

Contraindications

• Hypersensitivity to drug

• Severe hepatic impairment

• Sleep apnea

• Women

Precautions

None

Administration

• Be aware that leuprolide acetate is the most common LHRH analog given with flutamide.

Adverse reactions

CNS: drowsiness, confusion, depression, anxiety, nervousness, paresthesia

CV: peripheral edema, hypertension

GI: nausea, vomiting, diarrhea, constipation, abdominal pain, dyspepsia, anorexia, dry mouth

GU: erectile dysfunction, loss of libido, gynecomastia, hot flashes

Hematologic: anemia, leukopenia, thrombocytopenia

Hepatic: hepatitis

Skin: rash, photosensitivity

Interactions

Drug-drug. Warfarin: increased prothrombin time

Drug-diagnostic tests. Alkaline phosphatase, alanine aminotransferase, aspartate aminotransferase, blood urea nitrogen, creatine kinase: increased levels

Hemoglobin, platelets, white blood cells: decreased levels

Drug-herbs. Chaparral, comfrey, eucalyptus, germander, pennyroyal, skullcap, valerian: increased risk of hepatotoxicity

Drug-behaviors. Sun exposure: increased risk of photosensitivity

Patient monitoring

• Monitor CBC and liver function tests.

Watch for bleeding tendency and signs and symptoms of hepatic damage (jaundice, vomiting, dark yellow or brown urine).

• Monitor blood pressure.

Patient teaching

Instruct patient to immediately report unusual bleeding or bruising.

• Tell patient to avoid activities that can cause injury. Advise him to use soft toothbrush and electric razor to avoid gum and skin injury.

• Caution patient to avoid driving and other hazardous activities until he knows how drug affects concentration and alertness.

• Instruct patient to minimize GI upset by eating frequent, small servings of healthy food.

• Tell patient he'll undergo regular blood testing during therapy.

• As appropriate, review all other significant and life-threatening adverse reactions and interactions, especially those related to the drugs, tests, herbs, and behaviors mentioned above.

McGraw-Hill Nurse's Drug Handbook, 7th Ed. Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved

flutamide

(flo͞o′tə-mīd′)
n.
A nonsteroidal antiandrogen that inhibits the binding of testosterone and dihydrotestosterone to androgen receptors, used in the treatment of prostate cancer.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

flutamide

Endocrinology A nonsteroidal antiandrogen which, unlike steroidal antiandrogens, lacks androgenic, estrogenic, antiestrogenic, progestational, adrenocortical, and antigonadotropic activity; flutamide has been used for metastatic androgen-responsive prostate CA and, when combined with LHRH analogues, achieves a relatively complete androgen blockade; flutamide has been used to treat acne and hirsutism Adverse effects GI tract–diarrhea, nausea, dizziness, gynecomastia, hepatic dysfunction or toxicity. Cf Nilutamide.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

flutamide

A drug that opposes male sex hormones (androgens) and is used to treat advances cancer of the prostate gland. Brand names are Chimax and Drogenil.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

flu·ta·mide

(flūtă-mīd)
A nonsteroidal antiinflammatory drug used to treat arthritis.
Medical Dictionary for the Dental Professions © Farlex 2012
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