Arava (Leflunomide) — Patient-Friendly Medicine Information (Australia)

Arava contains leflunomide, a medicine used to help control certain inflammatory conditions. This page explains how Arava works, how it is commonly used, what to expect, and important safety information for people in Australia.

Always read the consumer medicine information (CMI) supplied with your product. If you have questions about your specific situation, speak with a healthcare professional.

1) Basic product information

• Medicine name: Arava
• Active ingredient: Leflunomide
• Common form: Tablets
• ATC (approx.): L01B? (immunomodulatory agent; classification may vary by system)
• Therapeutic area: Rheumatology / immune-mediated inflammatory disease

Typical strengths (may vary by brand/pack): Tablets are commonly available in strengths such as 10 mg and 20 mg, and sometimes 100 mg for a short “loading” schedule used in some regimens.

2) What Arava is used for (indications)

Arava is used for immune-mediated inflammatory diseases, primarily:

• Rheumatoid arthritis (RA): To reduce signs and symptoms and help slow joint damage.
• Active psoriatic arthritis (PsA): To reduce symptoms and improve function.

In some cases, clinicians may consider it for other immune-mediated conditions depending on individual circumstances and local guidance.

3) How Arava works (mechanism of action)

Leflunomide helps reduce inflammation and abnormal immune activity by inhibiting key steps in immune-cell activation.

• Leflunomide is converted in the body to its active metabolite.
• The active metabolite inhibits dihydroorotate dehydrogenase, an enzyme involved in pyrimidine (DNA/RNA building block) synthesis.
• Because activated lymphocytes rely on these pathways to multiply, this effect can reduce immune-driven inflammation.

What this means for you: Arava often takes time to work. Many people notice partial improvements within weeks, with greater benefits developing over several months.

4) How Arava behaves in the body (pharmacokinetics)

Understanding pharmacokinetics can help you appreciate why timing and adherence matter.

• Absorption: Orally taken, absorbed through the gut.
• Conversion to active metabolite: Leflunomide is metabolised to its main active metabolite, which is responsible for much of the effect.
• Half-life: The active metabolite can remain in the body for a long time. This can matter for safety planning (for example, when stopping treatment).
• Distribution: The active metabolite distributes throughout body tissues.
• Elimination: Clearance occurs slowly via metabolism and excretion. In certain situations where rapid removal is needed, a “washout” approach may be used under medical supervision.

Practical implication: Even after stopping, the medicine may continue to have effects for weeks because of the prolonged presence of the active metabolite.

5) Typical dosing and timing

Dosing schedules can differ depending on disease activity, age, liver health, other medicines, and laboratory monitoring. Below are common approaches used for Arava in clinical practice.

Do not change your dose without medical advice. If you miss a dose, follow the guidance in your medicine information and consult a healthcare professional for clarification.

Monitoring is part of treatment

Arava can affect blood counts and liver enzymes. Regular blood tests are commonly used to monitor safety:

• Liver function tests: e.g., ALT/AST (and sometimes bilirubin)
• Full blood count (FBC): to check white blood cells and platelets
• Blood pressure: may be monitored as per local practice

The exact testing schedule should be discussed with your treating clinician.

6) Food interactions

In general, Arava can be taken with or without food. However, your clinician or the product information may include specific advice for your brand and circumstances.

• Take consistently: If you choose to take it with food, try to keep that routine.
• GI side effects: Some people experience diarrhoea, nausea, or abdominal discomfort—taking with food may help in some cases.

If you have significant stomach upset, severe diarrhoea, or signs of dehydration, contact your healthcare professional promptly.

7) Alcohol interactions and liver safety

Alcohol and leflunomide both relate to liver health. This combination may increase the risk of liver irritation or elevated liver enzymes in some people.

• Avoid heavy alcohol intake while on Arava.
• If you drink alcohol, discuss an appropriate limit with your clinician.
• Stop and seek medical advice if you develop symptoms that may suggest liver problems, such as:
  • yellowing of the skin or eyes (jaundice)
  • dark urine
  • unusual fatigue, itching, or persistent nausea
  • right upper abdominal pain

Important: People with existing liver disease or risk factors may require extra caution and closer monitoring.

8) Medicine interactions (key drug interactions)

Arava can interact with other medicines, particularly those also affecting the liver, the immune system, or blood counts.

Common interaction categories

• Other liver-metabolised medicines: Some drugs increase the risk of liver enzyme changes. Your pharmacist can check compatibility with your medication list.
• Other immunosuppressants: Combining immunosuppressive treatments may increase infection risk and may require careful monitoring.
• Warfarin: There may be effects on blood clotting measures (e.g., INR). If you take warfarin, close monitoring is essential.
• Vaccines: Some vaccines may be less effective or not recommended while immune effects are present. Discuss vaccination timing with your healthcare professional.
• Live vaccines: Generally avoided during immunomodulatory therapy unless advised otherwise by your clinician.

Practical advice

• Provide a complete list of prescription medicines, over-the-counter products, and supplements to your pharmacist.
• Be cautious with herbal products—some can affect liver function.
• Report new symptoms after starting or stopping any medicine.

9) Safety profile and important precautions

Like all medicines, Arava can cause side effects. Many are manageable, but some require urgent medical attention. Always seek advice promptly if you feel unwell or develop concerning symptoms.

Common side effects

• Diarrhoea or loose stools
• Nausea or abdominal discomfort
• Increased liver enzymes (seen on blood tests)
• Headache
• Rash or skin reactions
• Weight loss in some people

Less common but important risks

• Infections: Because Arava affects immune function, infections may occur more easily.
• Blood count changes: Low white blood cells or platelets can increase risk of infection or bruising/bleeding.
• Severe skin reactions: Rare but serious reactions can occur—seek urgent care if you develop widespread rash, blistering, or peeling skin.
• Lung effects: Rare interstitial lung disease-type effects have been reported. Seek medical help if you develop new or worsening breathlessness, persistent cough, or fever.

When to seek urgent medical help

Contact emergency services or seek urgent care if you experience:

• trouble breathing or swelling of the face/lips (possible allergic reaction)
• high fever or signs of serious infection
• yellow eyes/skin or dark urine
• severe rash with blistering or peeling

10) Practical use tips

• Stick to the schedule: Take Arava at the same time each day to keep blood levels steady.
• Don’t skip monitoring: Regular blood tests are a core safety step, not an optional extra.
• Hydrate and manage diarrhoea early: If diarrhoea occurs, drink fluids and discuss medication advice promptly.
• Know your baseline: If possible, keep a record of your latest liver function tests and blood counts.
• Report symptoms quickly: Early assessment can prevent complications, especially for infections or liver-related issues.
• Carry information: Consider carrying a medicine list or summary (including Arava) for emergency visits.

11) Stopping treatment and “washout” considerations

Because the active metabolite can remain in the body for a long time, stopping Arava may not immediately eliminate the medicine effect. In certain situations—especially those related to reproductive planning—clinicians may advise a specific process to rapidly reduce levels (“washout”), using medicines designed to remove the active metabolite more quickly.

Do not attempt washout without medical guidance. If you need to stop or have concerns, discuss your plan with your healthcare professional.

12) Alternative treatment options

Arava is one of several disease-modifying options for rheumatoid arthritis and psoriatic arthritis. Alternatives may include:

• Other conventional DMARDs:
  • Methotrexate
  • Sulfasalazine
  • Hydroxychloroquine
• Biologic therapies: Targeted immune pathways (administered by injection or infusion; eligibility varies).
• Targeted synthetic DMARDs (tsDMARDs): Such as JAK inhibitors (specific suitability depends on risk factors and monitoring).
• Supportive treatments: Analgesics and anti-inflammatory medicines to manage symptoms while DMARDs take effect.

The best choice depends on disease severity, previous treatment response, comorbidities (including liver, lung, infection risk), and personal preferences.

13) Market and legal context for Australia

Arava (leflunomide) is an established medicine used in Australian clinical practice for inflammatory arthritis. In Australia, medicines are regulated under the Therapeutic Goods Administration (TGA). Pharmaceutical products on the market must comply with Australian standards for quality, safety, and performance.

Availability: Stock can vary between pharmacies and supply networks. Online pharmacies may offer delivery subject to individual state/territory requirements and product availability. Your supplier should confirm whether the exact strength and pack size are currently available.

Medicines information: Consumer Medicine Information (CMI) for leflunomide/Arava can be provided by your pharmacy and is also available through official medicine information resources.

14) Recent guidance and clinical considerations

Clinical guidance for rheumatoid arthritis and psoriatic arthritis continues to evolve as new evidence emerges. Key themes that often appear in contemporary guidance include:

• Choosing DMARDs early and treating-to-target strategies
• Regular safety monitoring (especially liver tests and blood counts)
• Reassessing infection risk and vaccination status
• Considering cardiovascular, liver, and lung comorbidities when selecting a therapy
• Coordinating care between specialists and GPs for ongoing monitoring and symptom management

Note: If you have recent medication changes, ask your clinician whether any updates in practice affect your monitoring frequency or risk management plan.

15) Delivery, availability, and ordering (Australia)

When ordering through an online pharmacy:

• Confirm the exact strength (e.g., 10 mg or 20 mg) and pack quantity.
• Check delivery timing and whether refrigerated storage is required (most tablet medicines do not require refrigeration).
• Ensure correct dosing instructions align with your personal regimen.
• Keep your monitoring schedule—delivery does not replace follow-up testing.

Availability can change. If Arava is temporarily out of stock, your pharmacy may discuss options such as ordering the next delivery batch or exploring suitable alternatives.

16) Arava FAQ

How long does Arava take to start working?

Arava typically takes time. Some people notice improvement within weeks, but more meaningful results often develop over 2–3 months or longer. Continue taking it as directed and keep follow-up appointments.

Can I take Arava with food?

Usually, yes. Many people can take it with or without food. Try to take it consistently and discuss any personal GI issues with your healthcare professional.

What side effects should I watch for?

Common effects include diarrhoea and nausea. Watch for more serious signs such as infection symptoms, yellowing of the skin/eyes, severe rash, or new breathlessness/cough and seek urgent medical advice if they occur.

Do I need blood tests while on Arava?

Yes. Regular monitoring for liver function and blood counts is commonly recommended to ensure safety.

Is it safe to drink alcohol while taking Arava?

Alcohol may increase liver-related risk. It’s best to avoid heavy drinking and discuss a safe limit with your clinician. If liver symptoms occur, seek medical help promptly.

What medicines can interact with Arava?

Interactions can occur with medicines that affect the liver, blood counts, immune function, or clotting (e.g., warfarin). Always provide your full medication and supplement list to a pharmacist for a compatibility check.

Can I receive vaccines while taking Arava?

Vaccine suitability depends on the type of vaccine and your overall health. Some vaccines may be less effective, and live vaccines are often avoided during immune-modulating therapy. Ask your healthcare professional for advice on timing.

What if I miss a dose?

Follow the instructions in your medicine information. If you’re unsure, consult your pharmacist or healthcare professional. Avoid taking extra doses to “catch up” without guidance.

What should I do if I want to stop Arava?

Do not stop suddenly without discussing it with your clinician. Because active levels can remain in the body for a long time, stopping can still have effects. Special “washout” procedures may be considered in certain situations.

17) Summary

Arava (leflunomide) is an immune-modulating DMARD used to treat conditions such as rheumatoid arthritis and active psoriatic arthritis. It works by reducing abnormal immune activity, but it can take weeks to months to reach full benefit. Because it may affect the liver and blood counts, regular monitoring and careful attention to symptoms are important. Alcohol and certain medicines may increase risk, so it’s essential to review interactions with your healthcare team.