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The Daily Insight

Is memantine worth taking

Author

Victoria Simmons

Published Feb 21, 2026

The drug memantine is a safe and effective therapy that helps patients suffering from moderate to severe Alzheimer disease for up to a year. However, evidence that the drug might slow the underlying pathology is weak.

What is the success rate of memantine?

Of the 318 patients randomized to and treated with memantine, 85% completed the study, compared with 91% of the 152 patients randomized to the placebo group.

Does memantine improve memory?

Memantine is a prescription drug used to treat moderate to severe confusion (dementia) related to Alzheimer’s disease. It does not cure Alzheimer’s disease, but it may improve memory, awareness, and the ability to perform daily functions.

How long does it take for memantine to take effect?

For example, it may take several days or even weeks for some symptoms to improve. Memory and other brain functions may slowly improve over several weeks. In some people memantine does not improve memory but slows down the decline in brain functioning seen in Alzheimer’s disease.

Does memantine slow Alzheimer's?

Medications containing the drug memantine are supposed to help people who have Alzheimer’s disease remember things and better manage their daily tasks. Studies show that memantine can somewhat delay the worsening of cognitive (mental) performance. Other abilities important in daily life may also last longer.

How does memantine help Alzheimer's?

Memantine is used to treat the symptoms of Alzheimer’s disease (AD; a brain disease that slowly destroys the memory and the ability to think, learn, communicate and handle daily activities). Memantine is in a class of medications called NMDA receptor antagonists. It works by decreasing abnormal activity in the brain.

Does memantine prolong life?

While this study has several limitations, these findings suggest that memantine treatment is associated with an increased life-expectancy relative to donepezil treatment.

Is memantine for mild dementia?

Memantine, indicated for moderate to severe Alzheimer disease (AD), is frequently prescribed off-label either alone or with a cholinesterase inhibitor for mild AD and mild cognitive impairment. In 2006, it was prescribed to 19% of patients with mild AD in the United States.

Does memantine work for vascular dementia?

Alzheimer’s disease medicines, such as donepezil (Aricept), galantamine (Reminyl), rivastigmine (Exelon) or memantine are not used to treat vascular dementia, but may be used in people who have a combination of vascular dementia and Alzheimer’s disease.

Can memantine make dementia worse?

Take as directed. Memantine oral tablet is used for long-term treatment. It comes with serious risks if you don’t take it as prescribed. If you stop taking the drug or don’t take it at all: Your dementia symptoms may not be relieved, and they may get worse.

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When should memantine be stopped?

These medications should be stopped if the desired effects—stabilizing cognitive and functional status—are not perceived within a reasonable time, such as 12 weeks. In some cases, stopping cholinesterase inhibitor therapy may cause negative effects on cognition and neuropsychiatric symptoms.

What is the best time of day to take memantine?

Take this medicine at bedtime unless your doctor tells you otherwise. You may take donepezil and memantine with or without food. Do not crush, chew, or break an extended-release capsule. Swallow it whole.

What is the new drug for Alzheimer's?

Aduhelm is the first drug on the market able to remove amyloid, the sticky substance that builds up in the brains of Alzheimer’s patients. It’s also the first new Alzheimer’s drug approved since 2003.

Can memantine cause seizures?

In clinical trials of NAMENDA, seizures occurred in 0.2% of patients treated with NAMENDA and 0.5% of patients treated with placebo.

What is the best memory booster?

  1. Fish Oils. Fish oil supplements are a rich source of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), two types of omega-3 fatty acids. …
  2. Resveratrol. …
  3. Creatine. …
  4. Caffeine. …
  5. Phosphatidylserine. …
  6. Acetyl-L-Carnitine. …
  7. Ginkgo Biloba. …
  8. Bacopa Monnieri.

Can a person recover from dementia?

There is currently no “cure” for dementia. In fact, because dementia is caused by different diseases it is unlikely that there will be a single cure for dementia. Research is aimed at finding cures for dementia-causing diseases, such as Alzheimer’s disease, frontotemporal dementia and dementia with Lewy bodies.

How quickly does Alzheimer's progress?

Progression from the early stages to the moderate or middle stages of Alzheimer’s can happen relatively quickly, just two to four years after diagnosis, but progression from the moderate or middle stage usually takes much longer – up to ten years.

What happens when memantine stops working?

Although memantine is widely used and generally considered safe, an abrupt cessation of memantine may result in discontinuation syndrome that can be distressing and result in decline of natural course. We report two patients who developed significant behavior disturbance after abrupt cessation of memantine.

What is the life expectancy of someone with vascular dementia?

On average, people with vascular dementia live for around five years after symptoms begin, less than the average for Alzheimer’s disease. Because vascular dementia shares many of the same risk factors as heart attack and stroke, in many cases, the person’s death will be caused by a stroke or heart attack.

Is Alzheimer's the same as vascular dementia?

For example, you may have blocked or damaged blood vessels in your brain (vascular dementia) and brain plaques and tangles (Alzheimer’s disease) at the same time.

How quickly can vascular dementia progress?

Vascular dementia will usually get worse over time. This can happen in sudden steps, with periods in between where the symptoms do not change much, but it’s difficult to predict when this will happen. Home-based help will usually be needed, and some people will eventually need care in a nursing home.

Does memantine improve mood?

Conclusions: The results confirm our previous observations and strongly suggest that memantine, as augmenting agent, was associated with a clinically substantial antimanic and sustained mood-stabilizing effect, with excellent safety and tolerability profile.

How do you know what stage of Alzheimer's you are in?

  1. Stage 1: Before Symptoms Appear. …
  2. Stage 2: Basic Forgetfulness. …
  3. Stage 3: Noticeable Memory Difficulties. …
  4. Stage 4: More Than Memory Loss. …
  5. Stage 5: Decreased Independence. …
  6. Stage 6: Severe Symptoms. …
  7. Stage 7: Lack of Physical Control.

Does memantine affect sleep?

It is well known that memantine acts as a blocker on N-methyl-D-aspartate (NMDA) receptors. It produces wake promotion and insomnia in AD patients [10]. However, a few studies showed that memantine increases total awake time and reduces total sleep time [11,12].

Can memantine cause more confusion?

Some side effects of Namenda are dizziness, confusion, headache, sleepiness, constipation, vomiting, pain (especially in the back), and coughing. More serious side effects are rare but include shortness of breath and hallucination.

Do dementia drugs prolong life?

AARP report shows prolonged use is costly but not effective Current dementia drugs also do not affect the underlying cause of the disease. They do not delay institutionalization, improve quality of life or lessen the burden on caregivers, according to research cited in the PPI report.

What are the stages of dementia?

  • Stage 1 (No cognitive decline)
  • Stage 2 (Very mild cognitive decline)
  • Stage 3 (Mild cognitive decline)
  • Stage 4 (Moderate cognitive decline)
  • Stage 5 (Moderately severe cognitive decline)
  • Stage 6 (Severe cognitive decline):
  • Stage 7 (Very severe cognitive decline):

Can memantine cause aggression?

Results: Patients treated with memantine had significantly lower NPI total scores than patients treated with placebo. Analyses of the 12 NPI domains revealed significant effects in favor of memantine on agitation/aggression, eating/appetite, and irritability/lability.

Can memantine cause heart failure?

In particular, there is evidence of increased risk of syncope, bradycardia, QT interval prolongation, ventricular tachycardia, and atrioventricular block with AChEIs. 2, 3, 4, 5, 6, 7, 8 Moreover, memantine has been associated with an increased risk of myocardial infarction,9 among other cardiovascular events.

Is memantine used for Parkinson's disease?

Memantine (M) was used in the treatment of patients with Parkinson’s disease (PD) with dementia. The drug was prescribed to 15 patients at first in a single dosage of 5 mg daily for one week, then the dosage was increased to 10 mg daily (one week), after to 15 mg daily (one week) and from the 4th week – to 20mg daily.

Does memantine help with anxiety?

Memantine may be an effective augmentation therapy in patients with anxiety who remain symptomatic despite adequate treatment with conventional antidepressant anxiolytics.