Prescription onlyLower-cost generic available



  • Pill
  • Liquid
  • Extended release
Back to: Full Site NavigationSkip to: side effects sectionSkip to: What to expect sectionSkip to: Risks and warnings sectionSkip to: Tips from users and pharmacists

Treats dementia.

Skip Upsides & Downsides section. Skip to side effects section.
Prescription onlyLower-cost generic available

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.


  • 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.

Save on your next Namenda (Memantine) prescription

Get the lowest price for your medication, even if you have insurance.

What to expect when you take Namenda (Memantine)

Skip what to expect section. Skip to Risks & Warnings section.
Tips from our pharmacists
  • Namenda (Memantine) XR capsules can be swallowed whole and shouldn't be chewed or crushed. But they can be opened and sprinkled in a small amount of applesauce.
  • If using the oral solution, use the dosing device that comes with the medication. Slowly squirt the dose into the corner of mouth and don't mix it with any other liquids.
  • Namenda (Memantine) can cause dizziness, headache, or constipation.
  • If you've missed several doses in a row, you'll need to call your doctor about restarting the medication properly again.
Skip side effects sections. Skip to What to Expect and Pharmacists Tips section.

Side effects for Namenda (Memantine)

From clinical trials of Namenda / Dementia  ( 1862)

  • DizzinessDizziness7% for Namenda vs.5% for placebo
  • HeadacheHeadache6% for Namenda vs.3% for placebo
  • ConfusionConfusion6% for Namenda vs.5% for placebo
  • ConstipationConstipation5% for Namenda vs.3% for placebo
  • CoughingCoughing4% for Namenda vs.3% for placebo
  • High blood pressureHigh blood pressure4% for Namenda vs.2% for placebo
  • Back painBack pain3% for Namenda vs.2% for placebo
  • VomitingVomiting3% for Namenda vs.2% for placebo
  • DrowsinessDrowsiness3% for Namenda vs.2% for placebo
  • HallucinationHallucination3% for Namenda vs.2% for placebo

Manufacturers don’t say how common these side effects are

  • Abnormal gait
  • Agitation
  • Anxiety
  • Bronchitis
  • Diarrhea
  • Ear, nose, or throat infection
  • Fall
  • Flu-like symptomsa-like symptoms
  • Inflicted injury
  • Joint pain
  • Leg or ankle swelling
  • Loss of appetite
  • Loss of bladder control
  • Low mood disorder
  • Nausea
  • Sleep difficulty
  • Urinary tract infection

Risks and Warnings for Namenda (Memantine)

Skip Risks and Warnings section. Skip to Tips section.
    • 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.

Means that some groups have a high risk of experiencing this side effect

Tips from pharmacists and people taking Namenda (Memantine)

Final section. Do you want to return to drug navigation?
The FDA category for this medication is B. It is advised that you: Probably safe