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Understanding Riluzole for ALS: What You Need to Know Before You Start

Dr. Priya Sammani (MBBS)
Medically Reviewed by Dr. Priya Sammani (MBBS) ✓ Medically Reviewed
📅 Updated: Oct 21, 2026 • ⏱ 8 min read • Editorial Policy
Understanding Riluzole for ALS: What You Need to Know Before You Start
Table of Contents ▾

Hearing that you or someone in your family has Amyotrophic Lateral Sclerosis, commonly known as ALS, brings a heavy weight to your heart. It is completely normal to feel overwhelmed when facing a serious condition that affects your nervous system. Riluzole is a special medicine prescribed to help slow down how fast this condition progresses over time. Let us walk through everything you need to know about this medicine in simple, clear words, just like a trusted friend explaining it to you.

Living with ALS requires courage, patience, and clear guidance from your doctor. While Riluzole does not cure the disease, it plays a vital role in protecting your nerve cells and giving you more quality time. Understanding how to take it safely, what side effects to watch for, and when to call your doctor will help you feel more in control of your daily health journey.

Key Takeaways About Riluzole

  • Riluzole slows down the progression of ALS, helping to protect your nerve cells.
  • Always take this medicine on an empty stomach, either one hour before or two hours after a meal.
  • Regular blood tests are essential to monitor your liver function while taking this medicine.
  • Never stop taking your medicine without talking to your doctor first.
  • Report any signs of fever, infection, or yellowing of your skin or eyes right away.
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What is Riluzole?

Simply put, Riluzole is a medicine that slows down the speed at which Amyotrophic Lateral Sclerosis progresses. Some people also call this condition Lou Gehrig's disease. This medicine cannot completely cure the disease, but it helps control the damage to your nerve cells and provides comfort and stability.

Sometimes, doctors might prescribe this medicine for other medical conditions as well. If you have questions about why your doctor chose this medicine for you, do not hesitate to ask them directly during your next visit. Open communication with your doctor ensures you feel confident about your treatment plan.

Things to Tell Your Doctor Before Starting the Medicine

Before you start taking Riluzole, your doctor needs a complete picture of your health history. If any of the following health conditions apply to you, make sure to share them right away so your care team can keep you safe.

Your Health Condition Why Your Doctor Needs to Know
Liver disease Your body clears this medicine mainly through your liver. If your liver is weak, your doctor may need to adjust your dose or run special tests.
Allergies Tell your doctor if you have ever had an allergic reaction to Riluzole, other medicines, specific foods, or food preservatives.
Pregnancy or planning a family We do not yet have complete safety information for taking this medicine during pregnancy. Talk with your doctor to weigh the risks and benefits.
Breastfeeding It is not clear if this medicine passes into breast milk, so telling your doctor if you are nursing is essential for baby safety.

How to Use This Medicine Correctly

To get the best results from your medicine, following your doctor's exact instructions is very important. Consistency helps maintain a steady, safe level of the medicine in your body.

  • Swallow the tablet whole with a full glass of water.
  • Take your medicine at the exact times recommended by your doctor. If you take it twice a day, try to keep an even gap of hours between doses.
  • The most important rule: Take this medicine on an empty stomach. This means taking it at least one hour before a meal or two hours after a meal. Never take it with food, because food can lower how well your body absorbs the medicine.
  • Do not stop taking your medicine suddenly without checking with your doctor first.
  • This medicine is prescribed just for you. Never share your medicine with anyone else, even if they have similar symptoms.

What If You Miss a Dose?

If you forget to take your medicine, take it as soon as you remember. However, if it is almost time for your next scheduled dose, skip the missed dose and just take your next dose at the normal time. Never take two doses at the same time to make up for a missed one.

Special Care and Side Effects to Watch For

Things to Pay Attention to While Taking the Medicine

  • Regular medical checkups: Keep all your clinic appointments and complete your blood tests just as your doctor asks. This is crucial to check how the medicine affects your liver.
  • Fever and infections: If you develop a fever, chills, a sore throat, or other signs of infection, do not try to treat it alone. Call your doctor right away, as this medicine can sometimes lower your body's ability to fight off illness.
  • Smoking: Tell your doctor if you smoke cigarettes. Smoking can make this medicine less effective in your body. If you plan to quit smoking, let your doctor know so they can support you.
  • Drowsiness and dizziness: This medicine can make you feel sleepy or dizzy. Avoid driving cars, operating machinery, or doing tasks that need sharp focus until you know how the medicine affects you. Older adults should stand up and sit down slowly to prevent falls.

Side Effects That May Happen

Like almost all medicines, Riluzole can cause side effects, though not everyone experiences them. Knowing what to watch for helps you stay safe and get help quickly if needed.

Category of Side Effect Description and Signs
Serious Side Effects (Call Your Doctor Right away)
Allergic Reactions Skin rash, itching, swelling of your lips, tongue, or face, and trouble breathing.
Signs of Liver Injury Dark yellow or brown urine, yellowing of your skin or the whites of your eyes, pain in the upper right side of your belly, nausea, loss of appetite, and extreme tiredness.
Signs of Infection Fever, shivering, chills, or a severe sore throat.
Common Side Effects (Report to Doctor If They Bother You)
Mild Daily Effects Cough, headache, nausea, vomiting, mild stomach ache, and a general feeling of tiredness.

Emergency Red Flags: When to Call 911 or 999

If you experience sudden severe trouble breathing, swelling of your face or throat, severe chest pain, or sudden confusion, call emergency services (911 in the US/Canada, 999 in the UK) or go to the nearest Emergency Department right away.

What If You Take Too Much? (Overdose)

If you believe you have taken more medicine than prescribed, get medical help right away. Go to the nearest hospital emergency room right away, or contact your local poison control center for urgent guidance.

Other Medicines That May Intersect With Riluzole

Tell your doctor about every single medicine you take. This includes prescription drugs, medicines bought over the counter at a pharmacy, vitamins, and herbal or traditional remedies. Some medicines can interact with Riluzole and change how it works in your body. Medicines that may interact include:

  • Allopurinol .
  • Birth control pills .
  • Ciprofloxacin .
  • Fluvoxamine .
  • Methoxsalen .
  • Sulfasalazine .

This list is not complete. Sharing a full list of all products you take with your doctor or pharmacist is always the safest approach.

💡 Take-Home Message

  • Riluzole is not a cure for ALS, but it helps slow down the progression of the disease.
  • Always take this medicine on an empty stomach, either one hour before meals or two hours after meals.
  • Tell your doctor about all other medicines you take, your lifestyle habits like smoking, and any other health conditions you have.
  • Seek medical advice right away if you develop a fever, signs of infection, or symptoms of liver trouble like yellow skin or eyes.
  • Never share your prescribed medicine with anyone else, and always follow your doctor's expert guidance.
❓ FAQ

Frequently Asked Medical Questions (FAQ)

Evidence-based clinical answers to common patient questions

Does Riluzole cure ALS?

No, Riluzole does not cure ALS. However, it is proven to slow down the progression of the disease and protect your nerve cells, helping you maintain function for a longer period.

Why must I take Riluzole on an empty stomach?

Taking Riluzole on an empty stomach ensures that your body absorbs the medicine properly. Eating food around the same time can reduce how much medicine enters your bloodstream.

How often do I need blood tests while taking this medicine?

Your doctor will usually schedule regular blood tests, especially during the first few months of treatment, to monitor your liver enzymes and ensure your liver is processing the medicine safely.

What should I do if I miss a dose of Riluzole?

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed one and continue with your normal schedule. Never take two doses at once.

Can I drink alcohol while taking Riluzole?

It is best to limit or avoid alcohol while taking Riluzole. Because both alcohol and the medicine can affect your liver, combining them increases your risk of liver irritation.

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Verified Scientific & Medical References (PubMed / WHO)

✓ Peer-Reviewed Sources
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