Nilutamide
Generic Name: nilutamide
Brand Names:
Nilutamide
DESCRIPTION Nilutamide tablets contain nilutamide, a nonsteroidal, orally active antiandrogen having the chemical name 5,5-dimethyl-3-[4-nitro-3-(trifluoromethyl)phenyl]-2,4-imidazolidinedione with the following structural formula: Nilutamide is a microcrystalline, white to practically white powder with a molecular weight of 317.25. Its molecular formula is C 12 H 10 F 3 N 3 O 4 . It is freely soluble in ethyl acetate, acetone, chloroform, ethyl alcohol, dichloromethane, and methanol.
Overview
DESCRIPTION Nilutamide tablets contain nilutamide, a nonsteroidal, orally active antiandrogen having the chemical name 5,5-dimethyl-3-[4-nitro-3-(trifluoromethyl)phenyl]-2,4-imidazolidinedione with the following structural formula: Nilutamide is a microcrystalline, white to practically white powder with a molecular weight of 317.25. Its molecular formula is C 12 H 10 F 3 N 3 O 4 . It is freely soluble in ethyl acetate, acetone, chloroform, ethyl alcohol, dichloromethane, and methanol.
Uses
INDICATIONS & USAGE Metastatic Prostate Cancer Nilutamide tablets are indicated for use in combination with surgical castration for the treatment of metastatic prostate cancer (Stage D 2 ). For maximum benefit, Nilutamide treatment must begin on the same day as or on the day after surgical castration.
Dosage
DOSAGE & ADMINISTRATION The recommended dosage is 300 mg once a day for 30 days, followed thereafter by 150 mg once a day. Nilutamide tablets can be taken with or without food.
Side Effects
ADVERSE REACTIONS Clinical Trial Experience The following adverse experiences were reported during a multicenter clinical trial comparing Nilutamide + surgical castration versus placebo + surgical castration. The most frequently reported (greater than 5%) adverse experiences during treatment with Nilutamide tablets in combination with surgical castration are listed below. For comparison, adverse experiences seen with surgical castration and placebo are also listed.
Interactions
Drug Interactions In vitro, nilutamide has been shown to inhibit the activity of liver cytochrome P-450 isoenzymes and, therefore, may reduce the metabolism of compounds requiring these systems. Consequently, drugs with a low therapeutic margin, such as vitamin K antagonists, phenytoin, and theophylline, could have a delayed elimination and increases in their serum half-life leading to a toxic level. The dosage of these drugs or others with a similar metabolism may need to be modified if they are administered concomitantly with nilutamide. For example, when vitamin K antagonists are administered concomitantly with nilutamide, prothrombin time should be carefully monitored and, if necessary, the dosage of vitamin K antagonists should be reduced.
Warnings
Interstitial Pneumonitis Interstitial pneumonitis has been reported in 2% of patients in controlled clinical trials in patients exposed to nilutamide. A small study in Japanese subjects showed that 8 of 47 patients (17%) developed interstitial pneumonitis. Reports of interstitial changes including pulmonary fibrosis that led to hospitalization and death have been reported rarely post-marketing. Symptoms included exertional dyspnea, cough, chest pain, and fever. WARNINGS Interstitial Pneumonitis Interstitial pneumonitis has been reported in 2% of patients in controlled clinical trials in patients exposed to nilutamide. A small study in Japanese subjects showed that 8 of 47 patients (17%) developed interstitial pneumonitis. Reports of interstitial changes including pulmonary fibrosis that led to hospitalization and death have been reported rarely post-marketing. Symptoms included exertional dyspnea, cough, chest pain, and fever. X-rays showed interstitial or alveolo-interstitial changes, and pulmonary function tests revealed a restrictive pattern with decreased DLco. Most cases occurred within the first 3 months of treatment with Nilutamide, and most reversed with discontinuation of therapy. CONTRAINDICATIONS Nilutamide tablets are contraindicated: • in patients with severe hepatic impairment (baseline hepatic enzymes should be evaluated prior to treatment) • in patients with severe respiratory insufficiency • in patients with hypersensitivity to nilutamide or any component of this preparation.
Pregnancy
Pregnancy Animal reproduction studies have not been conducted with nilutamide. It is also not known whether nilutamide can cause fetal harm when administered to a pregnant woman or can affect reproductive capacity. Nilutamide should be given to a pregnant woman only if clearly needed.
Storage
HOW SUPPLIED Nilutamide 150 mg tablets are supplied in boxes of 30 tablets. Each box contains 3 child-resistant, PVC, aluminum foil-backed blisters of 10 tablets (NDC 66993-212-38). Each white, biconvex, cylindrical (10 mm in diameter) tablet has a triangular logo on one side and an internal reference number (168D) on the other.
Frequently Asked Questions
What is Nilutamide used for?▼
INDICATIONS & USAGE Metastatic Prostate Cancer Nilutamide tablets are indicated for use in combination with surgical castration for the treatment of metastatic prostate cancer (Stage D 2 ). For maximum benefit, Nilutamide treatment must begin on the same day as or on the day after surgical castration.
What are the side effects of Nilutamide?▼
ADVERSE REACTIONS Clinical Trial Experience The following adverse experiences were reported during a multicenter clinical trial comparing Nilutamide + surgical castration versus placebo + surgical castration. The most frequently reported (greater than 5%) adverse experiences during treatment with Nilutamide tablets in combination with surgical castration are listed below. For comparison, adverse experiences seen with surgical castration and placebo are also listed.
Can I take Nilutamide during pregnancy?▼
Pregnancy Animal reproduction studies have not been conducted with nilutamide. It is also not known whether nilutamide can cause fetal harm when administered to a pregnant woman or can affect reproductive capacity. Nilutamide should be given to a pregnant woman only if clearly needed.
What are the important warnings for Nilutamide?▼
Interstitial Pneumonitis Interstitial pneumonitis has been reported in 2% of patients in controlled clinical trials in patients exposed to nilutamide. A small study in Japanese subjects showed that 8 of 47 patients (17%) developed interstitial pneumonitis. Reports of interstitial changes including pulmonary fibrosis that led to hospitalization and death have been reported rarely post-marketing. Symptoms included exertional dyspnea, cough, chest pain, and fever. WARNINGS Interstitial Pneumonitis Interstitial pneumonitis has been reported in 2% of patients in controlled clinical trials in patients exposed to nilutamide. A small study in Japanese subjects showed that 8 of 47 patients (17%) developed interstitial pneumonitis. Reports of interstitial changes including pulmonary fibrosis that led to hospitalization and death have been reported rarely post-marketing. Symptoms included exertional dyspnea, cough, chest pain, and fever. X-rays showed interstitial or alveolo-interstitial changes, and pulmonary function tests revealed a restrictive pattern with decreased DLco. Most cases occurred within the first 3 months of treatment with Nilutamide, and most reversed with discontinuation of therapy. CONTRAINDICATIONS Nilutamide tablets are contraindicated: • in patients with severe hepatic impairment (baseline hepatic enzymes should be evaluated prior to treatment) • in patients with severe respiratory insufficiency • in patients with hypersensitivity to nilutamide or any component of this preparation.
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Medical Disclaimer
This drug information is for educational purposes only and should not replace professional medical advice. Drug information is sourced from the FDA National Drug Code Directory and Structured Product Labeling. Always consult with a healthcare provider before starting, stopping, or changing any medication.