Aducanumab-avwa: uses, how it was given, side effects
Last updated September 7, 2026.
**Aducanumab-avwa is an amyloid-targeting monoclonal antibody formerly marketed as Aduhelm for early Alzheimer's disease.** It binds to amyloid beta and helps reduce amyloid plaques in your brain. Its most important risk is brain swelling or bleeding, called amyloid-related imaging abnormalities (ARIA), which can occur without symptoms and requires MRI monitoring. FDA lists its application as withdrawn effective November 1, 2024, so the dosing information below describes its former use.
What does it treat?
Aducanumab-avwa was used for Alzheimer's disease, with treatment started during mild cognitive impairment or mild dementia. If you had worsening memory or thinking, a specialist needed to establish the diagnosis and confirm amyloid buildup before treatment. Reducing plaques was the basis for accelerated approval; this did not establish that you would notice better memory or daily functioning.
How do you take it?
The former label used a liquid diluted and infused into your vein over about one hour every four weeks: 1 mg/kg for infusions 1 and 2, 3 mg/kg for infusions 3 and 4, 6 mg/kg for infusions 5 and 6, and 10 mg/kg from infusion 7 onward. There was no daily dose or daily ceiling. After a missed infusion, you were to contact the clinic and resume the same dose promptly, keeping doses at least 21 days apart. You could follow your normal diet. New headache, confusion, vision changes, or walking difficulty required contacting your clinician before another dose; an allergic reaction required stopping the infusion immediately.
Side effects to know
- Common: Common reported effects included headache, falls, and ARIA, which often appeared on MRI without symptoms; diarrhea was also reported.
- Serious: Brain swelling or bleeding can cause headache, confusion, dizziness, nausea, vision changes, walking difficulty, or seizures; get prompt medical assessment before receiving another infusion. Hives or swelling of your face, lips, mouth, or tongue require immediate help and stopping an ongoing infusion.
Who should not take it?
The former label listed no formal contraindications, but you needed specialist review of prior allergic reactions, brain bleeding, and medicines that affect clotting, including aspirin and anticoagulants. Testing for the ApoE e4 gene variant was recommended because having two copies increases ARIA risk. Discuss pregnancy or breastfeeding with your clinician because human pregnancy safety and effects on breast milk or a nursing infant are unknown. The label sets no alcohol limit; discuss drinking with your clinician because it can worsen balance and thinking.
When is it an emergency?
Call 911 for collapse, breathing trouble, inability to wake, a seizure, sudden weakness, trouble speaking, or a sudden severe headache. Facial or tongue swelling with trouble swallowing or breathing can signal a severe allergic reaction. New headache, confusion, vision changes, or trouble walking after an infusion needs same-day in-person assessment for possible ARIA. If you suspect an overdose or infusion error, call Poison Control at 1-800-222-1222 and the infusion team immediately, even without symptoms; no specific overdose symptom pattern is established.
What a Pymander AI doctor consult looks like
Illustrative example, not a real member's messages.
Common questions
What was the maximum recommended dose?
The highest recommended scheduled dose was 10 mg/kg by intravenous infusion every four weeks after gradual dose increases. It was based on your body weight, not a fixed amount for everyone. There was no daily dose. This is historical dosing information because FDA lists the application as withdrawn.
Could I drink alcohol with it?
The former label did not specify an alcohol interaction or a safe drinking limit. Alcohol can worsen balance and thinking, which matters if you have memory problems or falls. Ask your clinician whether you should avoid alcohol based on your symptoms and other medicines.
Was it safe during pregnancy or breastfeeding?
There are no adequate human data establishing pregnancy safety. It is unknown whether aducanumab-avwa enters human breast milk, affects milk production, or affects a nursing infant. Tell your clinician about pregnancy, pregnancy plans, or breastfeeding before considering any Alzheimer's medicine.
Did I need to eat before an infusion?
The medication did not require taking it with food or fasting. You could continue your normal diet unless your clinician gave you different instructions. Follow any separate instructions for other tests scheduled that day.
What would an overdose look like?
No specific overdose symptom pattern is established. If you suspect too much was infused, contact the infusion team and Poison Control at 1-800-222-1222 immediately. Do not wait for symptoms. Call 911 for collapse, a seizure, breathing trouble, or inability to wake.
Which medicines needed special review?
Medicines that reduce clotting, including aspirin and anticoagulants, needed special attention because of brain bleeding concerns. Give your clinician a complete list of prescriptions, nonprescription medicines, and supplements. Do not stop a prescribed blood thinner on your own. Your clinicians must weigh the reason you need it against the bleeding risk.