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RILUTEK® (riluzole) is a member of the benzothiazole class. Chemically, riluzole is 2-amino-6-(trifluoromethoxy)benzothiazole. Its molecular formula is C8H5F3N2OS and its molecular weight is 234.2. Its structural formula is as follows:
Riluzole is a white to slightly yellow powder that is very soluble in dimethylformamide, dimethylsulfoxide and methanol, freely soluble in dichloromethane, sparingly soluble in 0.1 N HCl and very slightly soluble in water and in 0.1 N NaOH. RILUTEK (riluzole) is available as a capsule-shaped, white, film-coated tablet for oral administration containing 50 mg of riluzole. Each tablet is engraved with “RPR 202” on one side.
Core: anhydrous dibasic calcium phosphate, USP; microcrystalline cellulose, NF; anhydrous colloidal silica, NF; magnesium stearate, NF; croscarmellose sodium, NF.
Film coating: hypromellose, USP; polyethylene glycol 6000; titanium dioxide, USP.
What are the possible side effects of riluzole (Rilutek)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using riluzole and call your doctor at once if you have a serious side effect such as:
- nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
- fever, chills, body aches, flu symptoms;
- chest discomfort, dry cough, trouble breathing;
- cough with yellow or green mucus; or
- stabbing chest pain, feeling short of...
What are the precautions when taking riluzole (Rilutek)?
Before taking riluzole, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: liver disease, kidney disease.
This drug may make you dizzy or drowsy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.
Smoking may affect the level of this drug in your blood. Tell your doctor if you smoke or use nicotine or if you stop smoking.
Kidney and liver function decline as you grow older....
Last reviewed on RxList: 8/4/2009
This monograph has been modified to include the generic and brand name in many instances.
Additional Rilutek Information
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Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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