Aducanumab Approved for Treatment of Alzheimer’s Disease

Aducanumab (Aduhelm™) has received accelerated approval as a treatment for Alzheimer’s disease from the U.S. Food and Drug Administration (FDA).

Aducanumab was the first therapy to demonstrate that removing beta-amyloid, one of the hallmarks of Alzheimer’s disease, from the brain reduces cognitive and functional decline in people living with early Alzheimer’s.

We encourage people who are interested in learning more about this treatment, for themselves or a loved one, to have a conversation with their health care provider.

Aducanumab FAQs

Is aducanumab a cure for Alzheimer’s and all other dementia?

No. Aducanumab addresses the underlying biology of the disease. According to the FDA, aducanumab reduces beta-amyloid plaques, which is reasonably likely to lead to a reduction in clinical decline due to Alzheimer’s disease.

This could mean more time for individuals to actively participate in daily life, have sustained independence and hold on to memories longer.

Who should take this drug?

Aducanumab is indicated for the treatment of Alzheimer’s disease. The drug was studied in people living with early Alzheimer’s disease — which includes people with mild cognitive impairment (MCI) or mild dementia due to Alzheimer's disease who also have evidence of a buildup of amyloid plaques in the brain. Treatment with aducanumab may be appropriate for people in the disease stage studied in the clinical trials. There is no safety or effectiveness data on initiating treatment at earlier or later stages of the disease than were studied.

How does aducanumab work?

Aducanumab is designed to target and remove specific forms of beta-amyloid that accumulate into plaques, which may contribute to cell death and tissue loss in areas of the brain particularly important for memory, thinking, learning and behaviors. The brain goes on creating beta-amyloid, but aducanumab decreases the amount. Its removal may also help other processes in your brain to operate more efficiently.

Will this drug restore memories or cognitive function that has been lost?

There is no evidence that aducanumab can restore lost memories or cognitive function.

What type of diagnostic test is the FDA requiring?

The FDA is not requiring any specific diagnostic test. However, the label says aducanumab is indicated for the treatment of Alzheimer’s, based on reduction in beta-amyloid plaques, one of the hallmarks of the disease. This means that a physician should confirm the presence of beta-amyloid plaques in the brain before prescribing this anti-amyloid plaque treatment.

Confirmatory tests like cerebrospinal fluid analysis or amyloid PET imaging should be a part of the diagnostic process to determine eligibility for the treatment.

How do I receive this treatment?

If you or a loved one is experiencing memory changes, the Alzheimer’s Association strongly encourages speaking with a health care provider for a thorough evaluation and diagnosis. Aducanumab may be a treatment option.

How is this drug administered?

Aducanumab is administered intravenously (IV) via a 45- to 60-minute infusion every 4 weeks. Infusion can be done at hospitals or infusion therapy centers. Aducanumab needs to be given by IV in order for the medication to reach the brain most effectively.

When will it be available at my doctor?
Access to aducanumab is limited, as is Medicaid coverage of the drug. Ask your doctor about availability.

What are the side effects?

The most common side effects include amyloid-related imaging abnormalities (ARIA), headache and fall. Another potentially serious side effect is allergic reaction. ARIA is a common side effect that does not usually cause symptoms but can be serious. It is typically a temporary swelling in areas of the brain that usually resolves over time. Some people may also have small spots of bleeding in or on the surface of the brain with the swelling, although most people with swelling in areas of the brain do not have symptoms. Some may have symptoms of ARIA such as headache, dizziness, nausea, confusion and vision changes.

Can I take this drug with my other medications/supplements? 

When considering any treatment, including aducanumab, it is important to have a conversation with your health care provider to ensure you are a candidate for the treatment. This includes taking into account other health conditions, medications or supplements.

How will COVID-19 impact my ability to get this treatment?

Throughout the pandemic, our health care systems have adapted. People have continued to receive treatments, including infusions such as chemotherapy, with extra precautions such as social distancing and wearing a mask. Talk to your doctor to find out if aducanumab is right for you or a loved one, and discuss a plan to identify extra precautions for COVID safety.

How does aducanumab (Aduhelm) compare to lecanemab (Leqembi™)? 

Lecanemab (Leqembi) is another FDA-approved treatment for early Alzheimer's. While monoclonal antibodies that target beta-amyloid in the brain belong to the same class of treatments, no two treatments are the same. Each works differently and at different stages of beta-amyloid plaque formation, and ultimately slow progression of the disease and reduce clinical decline.