Why is this medication prescribed?

Arcalyst (generic Rilonacept) is prescribed primarily for the treatment of certain rare and severe inflammatory conditions. It is most commonly used to manage:

• Cryopyrin-Associated Periodic Syndromes (CAPS): This includes conditions like Familial Cold Autoinflammatory Syndrome (FCAS) and Muckle-Wells Syndrome (MWS), which are characterized by recurrent fevers, rash, and joint pain.
• Gout: It can be used for chronic gout, especially if other treatments have not been effective or are not tolerated.

Rilonacept works by inhibiting interleukin-1 (IL-1), a cytokine involved in inflammation, thereby reducing inflammation and symptoms associated with these conditions.

How should this medicine be used?

Arcalyst (generic Rilonacept) is administered as an injection. Here’s how it is typically used:

• Administration: Arcalyst is given as a subcutaneous injection, which means it is injected under the skin. This is usually done in the abdomen or thigh.
• Dosage: The dosage and frequency of administration depend on the condition being treated. For Cryopyrin-Associated Periodic Syndromes (CAPS), the usual starting dose is 160 mg initially, followed by 80 mg once a week. For gout, the dosage may vary, so it’s essential to follow your healthcare provider’s specific instructions.
• Preparation: The medication should be prepared and administered according to the instructions provided with the medication. This often involves reconstituting the medication if it is provided as a powder and then drawing it into a syringe.
• Injection Technique: Proper technique is crucial for effective administration. If you are administering it yourself, your healthcare provider will instruct you on the correct technique to ensure the injection is done safely and effectively.
• Storage: Store the medication in the refrigerator and protect it from light. Do not freeze it. Follow any additional storage instructions provided.
• Follow-Up: Regular follow-up appointments with your healthcare provider are important to monitor the effectiveness of the treatment and to manage any potential side effects.

Always follow your healthcare provider’s specific instructions regarding dosage, administration, and any other related details.

Other uses for this medicine

Besides Cryopyrin-Associated Periodic Syndromes (CAPS) and gout, Arcalyst is sometimes used in clinical settings for other inflammatory conditions where IL-1 inhibition may be beneficial, though its primary and approved uses are for CAPS and certain forms of gout.

What special precautions should I follow?

Special Precautions to Follow:

• Infection Risk: Since Arcalyst reduces inflammation by inhibiting IL-1, it may increase your risk of infections. Inform your healthcare provider if you have a history of recurrent infections or are currently experiencing any symptoms of infection.
• Immunizations: Live vaccines should be avoided during treatment with Arcalyst. Discuss any vaccinations with your healthcare provider before receiving them.
• Allergic Reactions: Monitor for signs of an allergic reaction to the injection, such as rash, itching, or swelling. Severe reactions may require immediate medical attention.
• Pre-existing Conditions: Inform your healthcare provider about any pre-existing conditions, particularly those related to immune system function, as Arcalyst may exacerbate certain conditions.
• Pregnancy and Breastfeeding: Discuss with your healthcare provider if you are pregnant, plan to become pregnant, or are breastfeeding, as the effects of Arcalyst on these conditions are not fully established.
• Other Medications: Inform your healthcare provider about all other medications you are taking, including over-the-counter drugs and supplements, to avoid potential interactions.
• Administration Site: Follow proper techniques for injection to minimize the risk of irritation or infection at the injection site.

Always follow your healthcare provider’s guidance and report any unusual symptoms or concerns promptly.

What special dietary instructions should I follow?

Generally, there are no specific dietary restrictions associated with Arcalyst. However, maintaining a balanced diet can help support overall health and potentially mitigate side effects.

What should I do if I forget a dose?

If you miss a dose of Arcalyst, take it as soon as you remember if it is close to the time of the next dose. If it is almost time for your next dose, skip the missed dose. Do not double up on doses to make up for a missed dose. If you are unsure about what to do or if you have missed multiple doses, consult your healthcare provider for specific instructions.

What side effects can this medication cause?

Arcalyst (Rilonacept) can cause a range of side effects. Some of the more common and notable ones include:

Common Side Effects:

• Injection Site Reactions: Pain, redness, swelling, or itching at the site of injection.
• Headache: Some people experience headaches as a side effect.
• Upper Respiratory Tract Infections: Symptoms like sore throat, nasal congestion, or sinusitis may occur.
• Fever: Mild to moderate fever might be experienced.

Serious Side Effects:

• Infections: Increased risk of serious infections, such as bacterial, viral, or fungal infections.
• Allergic Reactions: Severe allergic reactions, including anaphylaxis, which could present with symptoms like rash, itching, swelling, severe dizziness, or trouble breathing.
• Severe Abdominal Pain: Pain in the abdomen that might indicate a more serious issue.
• Liver Problems: Rarely, liver issues can occur, so monitoring for symptoms like yellowing of the skin or eyes (jaundice), dark urine, or persistent abdominal pain is important.
• Nausea: Some individuals might experience nausea or gastrointestinal discomfort.
• Fatigue: Feeling unusually tired or fatigued.

If you experience any severe or concerning symptoms, or if you have any symptoms that do not improve or worsen, contact your healthcare provider immediately. Regular follow-ups with your healthcare provider are essential to monitor for potential side effects and manage them effectively.

What should I know about storage and disposal of this medication?

Storage and Disposal of Arcalyst:

Storage:

• Store Arcalyst in the refrigerator at 2°C to 8°C (36°F to 46°F). Do not freeze.
• Keep the medication in its original carton to protect it from light.
• Do not use the medication if it has been left out of the refrigerator for an extended period or if it has been frozen. Check the product information or consult your healthcare provider if this occurs.

Disposal:

• Dispose of unused or expired medication according to your local regulations. Many areas have drug take-back programs or designated disposal sites.
• Follow any specific disposal instructions provided by your pharmacist or healthcare provider.

In case of emergency/overdose

• Contact Emergency Services: If you suspect an overdose or experience severe symptoms, seek immediate medical attention or contact emergency services (911 in the U.S.).
• Symptoms of Overdose: While an overdose of Arcalyst is not well-documented, severe reactions or symptoms might include unusual or severe side effects. If you experience any unusual symptoms, contact your healthcare provider or emergency services immediately.

What other information should I know?

• Regular Monitoring: Regular follow-up appointments with your healthcare provider are important to monitor the effectiveness of the treatment and to check for potential side effects.
• Patient Information: Keep a record of your medication and any symptoms you experience to share with your healthcare provider during visits.
• Interaction with Other Medications: Inform your healthcare provider about all other medications and supplements you are taking to avoid potential interactions.
• Emergency Contact: Have contact information for your healthcare provider or a local emergency medical service readily available in case of any adverse reactions or concerns.

Always follow the specific instructions provided by your healthcare provider and the medication’s packaging to ensure safe and effective use.