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donanemab

This grade answers one narrow question: how strong is the public evidence and safety record behind this drug, and how clean is its money trail and court record? It is not a verdict on whether the drug is right for you.

C

Score breakdown (68/100)

Safety ×35%
C
Evidence ×25%
F
Regulatory ×15%
A
Money & lawsuits ×15%
A
Options ×10%
F

Safety: 70

Evidence: 39

Regulatory history: 95

Money & lawsuits: 100

Options: 40

FDA boxed warning

WARNING: AMYLOID RELATED IMAGING ABNORMALITIES Monoclonal antibodies directed against aggregated forms of beta amyloid, including KISUNLA, can cause amyloid related imaging abnormalities (ARIA), characterized as ARIA with edema (ARIA-E) and ARIA with hemosiderin deposition (ARIA-H). Incidence and timing of ARIA vary among treatments. ARIA usually occurs early in treatment and is usually asymptomatic, although serious and life-threatening events can occur. ARIA can be fatal. Serious intracerebral hemorrhages >1 cm, some of which have been fatal, have been observed in patients treated with this class of medications. Because ARIA-E can cause focal neurologic deficits that can mimic an ischemic stroke, treating clinicians should consider whether such symptoms could be due to ARIA-E before giving thrombolytic therapy in a patient being treated with KISUNLA [see Warnings and Precautions ( 5.1 ), Adverse Reactions ( 6.1 )] . ApoE ε4 Homozygotes Patients who are apolipoprotein E ε4 (ApoE ε4) homozygotes (approximately 15% of Alzheimer's disease patients) treated with this class of medications, including KISUNLA, have a higher incidence of ARIA, including symptomatic, serious, and severe ra...

What the FDA label says

Approved uses

is indicated for the treatment of Alzheimer's disease. Treatment with KISUNLA should be initiated in patients with mild cognitive impairment or mild dementia stage of disease, the population in which treatment was initiated in the clinical trials. KISUNLA is an amyloid beta-directed antibody indicated for the treatment of Alzheimer's disease. Treatment with KISUNLA should be initiated in patients with mild cognitive impairment or mild dementia stage of disease, the population in which treatment was initiated in the clinical trials. ( 1 )

Contraindications

is contraindicated in patients with known serious hypersensitivity to donanemab-azbt or to any of the excipients. Reactions have included anaphylaxis [see Warnings and Precautions ( 5.2 )] . KISUNLA is contraindicated in patients with known serious hypersensitivity to donanemab-azbt or to any of the excipients. ( 4 , 5.2 )

Warnings and precautions

Amyloid Related Imaging Abnormalities (ARIA): Enhanced clinical vigilance for ARIA is recommended during the first 24 weeks of treatment with KISUNLA. Risk of ARIA, including symptomatic ARIA, was increased in apolipoprotein E ε4 (ApoE ε4) homozygotes compared to heterozygotes and noncarriers. The risk of ARIA-E and ARIA-H is increased in KISUNLA-treated patients with pretreatment microhemorrhages and/or superficial siderosis. If a patient experiences symptoms suggestive of ARIA, clinical evaluation should be performed, including MRI scanning if indicated. ( 2.3 , 5.1 ) Infusion-Related Reactions: The infusion rate may be reduced, or the infusion may be discontinued, and appropriate therapy initiated as clinically indicated. Consider pre-treatment with antihistamines, acetaminophen, or corticosteroids prior to subsequent dosing. ( 5.3 ) 5.1 Amyloid Related Imaging Abnormalities Monoclonal antibodies directed against aggregated forms of beta amyloid, including KISUNLA, can cause amyloid related imaging abnormalities (ARIA), characterized as ARIA with edema (ARIA-E), which can be observed on MRI as brain edema or sulcal effusions, and ARIA with hemosiderin deposition (ARIA-H), which ...

Adverse reactions (label)

The following clinically significant adverse reactions are described elsewhere in the labeling: Amyloid Related Imaging Abnormalities [see Warnings and Precautions ( 5.1 )] Hypersensitivity Reactions [see Warnings and Precautions ( 5.2 )] Infusion-Related Reactions [see Warnings and Precautions ( 5.3 )] Most common adverse reactions (at least 10% and higher incidence compared to placebo): ARIA-E, ARIA-H microhemorrhage, ARIA-H superficial siderosis, and headache. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Eli Lilly and Company at 1-800-LillyRx (1-800-545-5979) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Dosing Regimen and Safety A lower incidence of ARIA occurred with the dosing regimen administered in Study 2 (350 mg/700 mg/1,050 mg/1,400 mg; Dosing Regimen 2) as compared to the regimen administered in Study 1 (700 mg/700 mg/700 mg/1,400 mg; Dosing Regimen 1); therefore, Do...

Recent major label changes

Boxed Warning 07/2025 Dosage and Administration ( 2.2 , 2.3 , 2.4 , 2.5 ) 07/2025 Warnings and Precautions ( 5.1 , 5.3 ) 07/2025

Source: FDA SPL label for Kisunla (Eli Lilly and Company), effective 20251230. Full label on DailyMed.

Side-effect reports sent to the FDA

These are counts of reports people filed, not rates of harm. Anyone can file one, and nobody checks whether the drug was the cause. Millions of doses are taken for every report sent, so the useful part is how this drug compares with the average across all drugs.

255reports that mention this drug
255of those blame this drug, not another one the person was taking
78%of reports describe a serious outcome, such as a hospital stay (average for all drugs: 57%)
3.9%of reports include a death, from any cause (average for all drugs: 9.1%)

Problems reported most often

Cerebral Haemorrhage · 41Amyloid Related Imaging Abnormality-Oedema/Effusion · 31Amyloid Related Imaging Abnormality-Microhaemorrhages And Haemosiderin Deposits · 27Headache · 27Infusion Related Reaction · 23Dyspnoea · 19Flushing · 19Vomiting · 17Dizziness · 16Chest Discomfort · 15Fall · 15Nausea · 15Erythema · 12Chills · 11Fatigue · 11

Reports per year

202420252026
453198

Source: the FDA's Adverse Event Reporting System (FAERS). Reports are voluntary and unverified. Drugs that are prescribed a lot, in the news, or in lawsuits attract more reports, so the percentages are compared with the whole database to correct for that partly, not fully.

Recalls and regulatory record

0recall actions on file
0 / 0brand / generic applications
0label changes since 2021
NoREMS program

Evidence base

17randomized trials (PubMed)
6systematic reviews
20registered trials
140%of completed trials posted results
0%terminated or withdrawn
80%industry-funded

Counts measure how much evidence exists and how transparent it is, not how big the benefit is. For that, ask your prescriber: if 100 people like me took this, how many would get better because of it, and how many would be harmed? (Doctors call these the "number needed to treat" and "number needed to harm.") It differs by condition and is the number drug ads leave out. Sources: PubMed, ClinicalTrials.gov.

Money and lawsuits

In 2024, drug companies reported $0 in payments to US physicians and hospitals tied to this drug across 0 transactions.

No pending federal MDL names this drug or its brands.

Not named in any federal pharmaceutical settlement of $100M or more on record.

Sources: CMS Open Payments (Sunshine Act); Judicial Panel on Multidistrict Litigation pending docket list; DOJ settlements as tabulated on Wikipedia with links to the primary record. State-court and individual suits are not included.

Who takes it and what it costs

Not in the Medicare Part D spending file (typically hospital-administered or very new drugs).

Same-class alternatives

No same-class alternatives found in RxClass.

Questions to ask your prescriber

  1. This drug carries a boxed warning. Which specific risk does it cover, and does it apply to me?
  2. The most-reported problems in FDA's adverse event data are cerebral haemorrhage, amyloid related imaging abnormality-oedema/effusion, amyloid related imaging abnormality-microhaemorrhages and haemosiderin deposits, headache. How would we recognize and handle those?
  3. There is no generic. Is there an older generic in the same class that works as well for my situation?
  4. What result are we expecting, by when, and what is the plan if it does not happen?
  5. If 100 people like me took this drug, how many would actually get better because of it, and how many would be harmed by it? (Doctors call these the number needed to treat and the number needed to harm.)