Compare Razadyne vs. Namenda

Head-to-head comparisons of medication uses, side effects, ratings, and more.



Coming soon.Treats dementia. 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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Reviews & ratings
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Side effects

We haven’t found good data for Razadyne side effects.

FDA side effect reports for Razadyne »
  • Headache 3%
  • Dizziness 2%
  • Constipation 2%
  • High blood pressure 2%
  • Pain 2%
  • Coughing 1%
  • Fatigue 1%
  • Shortness of breath 1%
  • Drowsiness 1%
  • Hallucination 1%
More Namenda side effects »
How it works
Coming soon.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.
Type of medication
Coming soon.
NMDA blocker
Prescription only
Available as
  • Pill
  • Extended release
  • Liquid
  • Pill
  • Liquid
  • Extended release
Used for (click to learn more)
  • Alzheimer's disease - Dementia (Mild to Moderate)
Risk factors for serious side effects
Coming soon.
  • History of seizures
    Detailed Namenda (Memantine) risks & warnings »
    Pregnancy category
    CFDA pregnancy category (Weigh risks vs. benefits)

    Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

    See the FDA package insert
    BFDA pregnancy category (Probably safe)

    Research studies with animals haven’t found a risk to unborn babies, but it hasn’t been properly studied in humans.

    See the FDA package insert
    No specific alcohol-related info.No specific alcohol-related info.
    No specific food-related info.No specific food-related info.
    Kidneys and liver
    No specific kidneys and liver-related info.No specific kidneys and liver-related info.
    No specific sex-related info.No specific sex-related info.
    No specific sleep-related info.No specific sleep-related info.
    No specific weight-related info.No specific weight-related info.
    Upsides and benefits
    Coming soon.
    • 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.
    Downsides and risks
    Coming soon.
    • Like other medications for dementia, it only slows down the progression of the disease; it doesn't stop or reverse it.
    Tips from our pharmacists for people taking the medication
    Coming soon.
    • 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.
    Learn more
    More about RazadyneSide effectsFDA package insert
    More about NamendaSide effectsReviews & ratingsAlternativesFDA package insert