After an Alzheimer’s diagnosis, families often want to know one thing immediately: “What treatment can we start?”
The answer is not as simple as choosing one tablet. Alzheimer’s disease affects people differently, and treatment may have several goals at the same time—slowing disease progression in eligible patients, supporting memory and thinking, managing behavioural symptoms, maintaining independence, and improving day-to-day quality of life.
Families and doctors working together to navigate Alzheimer's care with hope.
There is currently no treatment that permanently cures Alzheimer’s disease or restores brain cells that have already been lost. However, Alzheimer’s disease treatment options have expanded, and some therapies can help manage symptoms while newer treatments may slow progression in certain people with early-stage disease.
What Are the Main Types of Alzheimer’s Treatment?
It helps to divide treatment into two broad groups:
- Disease-modifying treatments: These target biological changes involved in Alzheimer’s and may slow progression in selected patients.
- Symptom treatments: These do not stop the underlying disease but may help with memory, thinking, behaviour, mood, or daily functioning.
Non-drug strategies, caregiver support, safety planning, physical activity, and management of other health conditions are also important parts of treatment.
For a broader overview of the condition, symptoms, diagnosis, and progression, you can read our guide to Alzheimer’s disease and dementia.
1. Newer Treatments That May Slow Alzheimer’s Progression
One of the biggest changes in Alzheimer’s treatment has been the development of medicines that target beta-amyloid, a protein that builds up abnormally in the brains of people with Alzheimer’s disease.
Two important treatments in this group are:
- Lecanemab
- Donanemab
These medicines are monoclonal antibodies designed to reduce amyloid deposits in the brain.
Unlike traditional symptom medicines, they are considered disease-modifying treatments because clinical trials have shown that they can slow cognitive and functional decline in appropriately selected patients.
Who May Be Eligible?
These treatments are not intended for everyone with Alzheimer’s disease. They are generally considered for people in the early stages, such as:
- Mild cognitive impairment due to Alzheimer’s disease
- Mild Alzheimer’s dementia
Evidence of amyloid pathology must usually be confirmed before treatment is started. This may involve appropriate biomarker testing recommended by the specialist.
Someone with moderate or advanced Alzheimer’s would not normally receive these medicines simply because amyloid is present.
Are Lecanemab and Donanemab a Cure?
No. This distinction is extremely important for patients and families. These medicines may slow the rate of decline in selected people with early Alzheimer’s, but they do not stop Alzheimer’s completely, restore lost memories, or return the brain to its condition before the disease began.
The benefit also differs from person to person. Before treatment, the specialist needs to discuss whether the expected benefit is meaningful enough to justify the treatment burden and possible risks for that individual.
What Is ARIA and Why Does It Matter?
Anti-amyloid medicines such as lecanemab and donanemab can cause a side effect known as amyloid-related imaging abnormalities (ARIA). ARIA may involve temporary swelling or fluid in parts of the brain or small areas of bleeding. Many cases cause no obvious symptoms and are discovered on MRI scans. However, some people may develop symptoms such as:
Regular MRI monitoring helps doctors detect and manage rare side effects early.
- Headache
- Confusion
- Dizziness
- Visual changes
- Nausea
- Weakness
- Difficulty speaking
- Seizures in severe cases
Serious complications can occur rarely, which is why treatment involves careful screening and MRI monitoring.
Genetic factors such as carrying two copies of the APOE ε4 gene can also affect ARIA risk, and specialists may recommend genetic testing before treatment to help patients understand this risk.
2. Treating Agitation, Anxiety and Behavioural Changes
Alzheimer’s affects more than memory. As the disease progresses, some people develop behavioural or psychological symptoms such as:
- Agitation
- Anxiety
- Depression
- Sleep disturbance
- Suspicion or paranoia
- Hallucinations
- Aggression
- Wandering
Medication is not automatically the first answer.
Doctors and caregivers often first look for a reason behind the behaviour. A sudden increase in agitation, for example, may be caused by pain, constipation, infection, hunger, poor sleep, medication side effects, an unfamiliar environment, or difficulty communicating a need. Correcting the trigger can sometimes improve behaviour without adding another medicine.
When symptoms are severe, persistent, or create a safety risk, medication may be considered. The choice depends on the exact symptom and the person's overall health. Brexpiprazole, for example, is approved in the United States specifically for agitation associated with dementia due to Alzheimer’s disease. Medicines used for behavioural symptoms require careful risk-benefit assessment, particularly in older adults.
3. Non-Drug Treatment Is an Important Part of Alzheimer’s Care
A prescription is only one part of Alzheimer’s treatment. Simple changes to daily life can sometimes make a major difference to independence, confidence, and behaviour.
Maintain a Familiar Routine
Predictable schedules can reduce confusion. Keeping meals, waking times, bathing, medications, and bedtime relatively consistent may make everyday life easier to navigate.
Encourage Physical Activity
Walking and other suitable forms of physical activity can support general health, mobility, sleep, mood, and independence. Activities should match the person's physical ability and medical condition.
Keep the Person Mentally and Socially Engaged
Activities do not need to resemble formal “brain training.” Familiar music, gardening, conversation, simple games, photographs, cooking with supervision, or spending time with family may provide enjoyment and meaningful stimulation. The goal should be participation rather than testing whether the person can remember correctly.
Meaningful everyday activities — music, gardening, cooking — bring joy and gentle stimulation.
Simplify the Environment
Too much noise, clutter, or unfamiliar activity can increase confusion. Clear labels, good lighting, familiar objects, calendars, clocks, medication organisers, and fewer unnecessary choices can make everyday tasks easier.
4. Treating Other Health Problems Matters Too
A person with Alzheimer’s may also have high blood pressure, diabetes, heart disease, hearing loss, vision problems, arthritis, depression, or sleep disorders. These conditions do not stop being important after an Alzheimer’s diagnosis.
Poor hearing can make communication difficulties look worse. Untreated pain can increase agitation. Poor vision can contribute to falls and confusion. Certain medications can also worsen drowsiness or cognitive symptoms. Regular medical reviews therefore help make sure that other treatable problems are not unnecessarily adding to the person’s difficulties.
Does Alzheimer’s Treatment Change as the Disease Progresses?
Yes. What matters most in early Alzheimer’s may be preserving independence, managing cognitive symptoms, discussing disease-modifying treatment, and planning for the future. As the condition progresses, priorities may shift toward :
- Managing behaviour and sleep
- Preventing falls and wandering
- Supporting eating and nutrition
- Helping with dressing, bathing, and toileting
- Maintaining comfort
- Supporting caregivers
In advanced Alzheimer’s, care increasingly focuses on comfort, dignity, safety, and quality of life.
How Is the Right Treatment Chosen?
Two people with Alzheimer’s disease may receive very different treatment plans. A specialist considers factors such as:
- The stage of Alzheimer’s disease
- Which symptoms are causing the most difficulty
- Whether Alzheimer’s-related amyloid has been confirmed
- Overall physical health
- Brain MRI findings
- Other medicines being taken
- Risk of side effects
- Ability to attend monitoring appointments
- The patient’s and family’s treatment goals
This is why there is no single treatment combination that is appropriate for every person with Alzheimer’s.
What About Vitamins, Supplements and Herbal Treatments?
Families understandably look for anything that might preserve memory, which has created a large market for supplements claiming to “reverse dementia,” “remove brain plaques,” or “restore memory.” Be cautious with these claims.
A supplement being labelled natural does not mean it has been proven to treat Alzheimer’s disease. Some products may also interact with prescription medicines or cause side effects. Do not stop prescribed Alzheimer’s treatment or replace it with a supplement without discussing the change with a healthcare professional.
Can Clinical Trials Be a Treatment Option?
Clinical trials are continuously evaluating new ways to diagnose, prevent, slow, or treat Alzheimer’s disease. For some patients, participation in an appropriate clinical trial may provide access to an investigational treatment while contributing to medical research.
However, an experimental treatment should not be confused with an established therapy. Benefits are not guaranteed, and every clinical trial has specific eligibility requirements and potential risks.
The Bottom Line
Alzheimer’s disease treatment is no longer limited to one type of medicine. Traditional treatments such as donepezil, rivastigmine, galantamine, and memantine can help manage cognitive symptoms in appropriate patients. Newer anti-amyloid therapies such as lecanemab and donanemab may slow disease progression in selected people with early Alzheimer’s disease.
At the same time, treatment must address the person—not only the disease. Behaviour, sleep, mobility, communication, other medical conditions, safety, independence, and caregiver support all become part of the care plan.
Most importantly, families should have realistic expectations. Treatment can help, and some newer therapies can slow progression, but Alzheimer’s disease currently has no permanent cure. The best approach is therefore one that matches the stage of the disease, the person’s medical needs, and what matters most to them and their family.
