Alzheimer’s disease is a severe ailment that affects millions of people globally. It gradually erodes memory, cognitive function, and the ability to perform everyday tasks. As the search for effective treatments continues, new medications like Leqembi have emerged, offering hope for patients and their families. Leqembi is intended to slow the progression of Alzheimer’s by targeting the accumulation of amyloid plaques in the brain—a hallmark of the disease.

While Leqembi presents a promising step forward in Alzheimer’s treatment, patients, caregivers, and healthcare providers need to understand its potential adverse effects completely. Knowing what to expect during treatment can assist in managing these effects and maximize the drug’s benefits. This article will dive into the side effects of Leqembi, providing a comprehensive overview to help you make informed decisions about this treatment option.

Leqembi for Alzheimer’s

Leqembi has garnered attention for its ability to slow the cognitive decline linked with Alzheimer’s disease potentially. This benefit is significant, as it allows patients to maintain their quality of life for extended periods. However, with these benefits come certain risks, mainly related to side effects ranging from mild to severe.

The most common Leqembi side effects encompass headache, dizziness, and nausea, especially during the initial stages of treatment. These symptoms are often mild and manageable, but monitoring them closely is essential. Some patients may experience more severe side effects, such as infusion-related reactions, including fever, chills, or difficulty breathing. These reactions are less common but should be addressed immediately if they occur.

In some cases, Leqembi has been associated with a condition called amyloid-related imaging abnormalities (ARIA). ARIA can manifest as brain swelling or microhemorrhages, detectable through MRI scans. While not all patients will experience ARIA, those who do may notice symptoms like headaches, confusion, or visual disturbances. Regular MRI monitoring is recommended for patients on Leqembi to catch these issues early.

Mild to Moderate Side Effects: What to Watch For

When starting Leqembi Alzheimer’s drug, it’s common for patients to experience mild to moderate side effects as their bodies adjust to the medication. These can include:

  • Headaches: Often reported after infusions, headaches can range from mild to moderate. Over-the-counter pain relievers, including acetaminophen, can help alleviate this symptom. 
  • Dizziness and Nausea: These symptoms are also common, particularly during the early stages of treatment. Staying hydrated and resting after infusions can help reduce the intensity of these side effects. 
  • Fatigue: Another possible side effect is feeling unusually tired or lethargic after receiving Leqembi. This fatigue is generally temporary, but balancing rest with regular activity is essential to help your body adjust.

These side effects, while uncomfortable, are typically manageable and may diminish as the treatment progresses. 

Severe Side Effects: Understanding the Risks

While most patients will only experience mild side effects, there are potential risks associated with Leqembi that warrant close attention. One of the more serious concerns is the risk of amyloid-related imaging abnormalities (ARIA). ARIA is a condition that can cause brain swelling (edema) or small areas of bleeding (microhemorrhages).

  • Symptoms of ARIA: If ARIA occurs, patients might experience severe headaches, confusion, vision changes, or even seizures in rare cases. These symptoms demand immediate medical attention, and treatment may need to be paused or modified based on the severity of the condition.
  • Infusion-Related Reactions: During or shortly after receiving an infusion of Leqembi, some patients may experience reactions such as fever, chills, or breathing difficulties. These reactions are more likely to occur during the first few infusions and may lessen over time. Premedication with antihistamines or corticosteroids can help prevent these reactions.
  • Allergic Reactions: Although rare, allergic reactions to Leqembi can occur. Symptoms may include hives, rash, itching, swelling of the face or throat, and difficulty breathing. Any signs of an allergic reaction should be treated as a medical emergency.

Understanding these risks is critical for patients and caregivers. Regular monitoring, including MRI scans and cognitive assessments, can help detect severe side effects early, allowing for timely interventions.

Managing Side Effects: Tips for Patients and Caregivers

Managing the side effects of Leqembi effectively requires a proactive approach. Here are some tips to help you and your caregivers navigate the treatment:

  • Stay Hydrated: Adequate hydration can help reduce the severity of headaches, dizziness, and nausea. Drinking plenty of water before and after infusions is recommended.
  • Rest After Infusions: It’s common to feel fatigued after receiving Leqembi. Plan for rest after your infusion appointments, and avoid strenuous activities until you feel fully recovered.
  • Track Symptoms: Keep a detailed record of any side effects you experience, noting their severity, duration, and how they respond to treatments like pain relievers. This information can be invaluable during follow-up appointments with your healthcare provider.
  • Regular Monitoring: Follow your healthcare provider’s recommendations for regular MRI scans and cognitive assessments. These tests are crucial for detecting any severe side effects early, particularly ARIA.
  • Communicate Openly: Always communicate openly with your healthcare provider about any new or worsening symptoms. Early intervention can inhibit complications and ensure your treatment plan remains effective and safe.

Balancing the Benefits and Risks of Leqembi

When considering Leqembi as a treatment option for Alzheimer’s, it’s essential to weigh the potential benefits against the risks. While the side effects can be concerning, the possibility of slowing cognitive decline offers significant hope for patients and their families.

Your healthcare provider will help you navigate these decisions, considering factors like your overall health, the severity of your Alzheimer’s symptoms, and how well you tolerate the medication. Regular follow-ups and open communication are crucial to maximizing the benefits of Leqembi while minimizing the risks.

Frequently Asked Questions (FAQs)

How soon will I notice improvements with Leqembi?

Leqembi is designed to delay the progression of Alzheimer’s disease rather than provide immediate symptom relief. It may take several months of treatment before noticeable improvements in cognitive function are observed. Regular cognitive assessments will help track your progress.

Can I continue Leqembi if I experience side effects?

Whether you can continue Leqembi after experiencing side effects depends on the severity of the symptoms. Mild side effects like headaches or dizziness can often be managed, but more severe effects like ARIA may require adjusting the treatment plan or discontinuing the medication. 

What should I do if I miss a Leqembi infusion appointment?

If you miss an infusion appointment, contact your healthcare provider immediately. They will advise you on how to reschedule the infusion and whether any adjustments to your dosing schedule are needed to maintain the effectiveness of the treatment.

Are there any lifestyle changes I should make while taking Leqembi?

While no specific lifestyle changes are required, maintaining a healthy diet, staying physically active, and keeping mentally engaged through activities like reading or puzzles can support overall brain health. These practices, combined with Leqembi treatment, may help slow the progression of Alzheimer’s symptoms.

Does insurance cover Leqembi?

Coverage for Leqembi varies depending on your insurance provider and policy. You must check with your insurance company to understand your coverage options, including whether prior authorization is required and what out-of-pocket costs you may incur. Your healthcare provider’s office may also assist with insurance-related questions.