Prescription onlyLower-cost generic availableClass: Neurology



Prescription onlyLower-cost generic availableClass: Neurology
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Treats dementia.

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Our bottom line

Namenda (Memantine) is one of the few medications that can be used to treat moderate to severe dementia caused by Alzheimer's.

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  • Only used to treat moderate to severe dementia caused by Alzheimer's disease.
  • It's available as an immediate-release tablet, a solution, and an extended-release tablet.
  • Can cause fewer side effects than other medicines used to treat Alzheimer's disease.
  • Available as a generic, which is cheaper.


  • Like other medications for dementia, it only slows down the progression of the disease; it doesn't stop or reverse it.
How it works

Namenda (Memantine) is an NMDA receptor antagonist. Researchers don't know exactly how it helps treat Alzheimer's disease, but it blocks an amino acid called glutamine, which seems to protect nerves from overstimulation.

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Side effect rates for Namenda (memantine)

1862 From clinical trials of Namenda / Dementia
  • Dizziness
  • Headache
  • Confusion
  • Constipation
  • Coughing
  • High blood pressure
  • Back pain
  • Vomiting
  • Drowsiness
  • Hallucination

Risks and Warnings for Namenda (memantine)

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    • Higher risk if:
    • History of seizures

    Namenda (Memantine) has been shown to raise the chances of someone having a seizure if they've had seizures in the past. Talk to your doctor if you've had a history of seizures to see if an alternative should be prescribed instead.

Common concerns from people taking Namenda (memantine)

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