It is very important that your doctor check your progress at regular visits to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects.
Stop using this medicine and check with your doctor right away if you have a rash; stomach pain; pale stools; dark urine; loss of appetite; nausea; unusual tiredness or weakness; or yellow eyes or skin. These could be symptoms of a serious liver problem.
Riluzole can temporarily lower the number of white blood cells in your blood, increasing the chance of getting an infection. If you can, avoid people with infections. Check with your doctor right away if you think you are getting an infection or if you have a fever or chills, cough or hoarseness, lower back or side pain, or painful or difficult urination.
Stop using this medicine and check with your doctor right away if you start having breathing problems, shortness of breath, a dry cough, chest pain, fever, or chills. These could be symptoms of a serious lung problem.
This medicine may cause dizziness or drowsiness. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are dizzy or not alert.
Avoid drinking large amounts of alcoholic beverages. Alcohol taken together with riluzole may cause liver problems.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.