1 What is Namenda?

Brand: Namenda, Namenda XR, Namenda XR Titration Pack

Generic: Memantine

Namenda is used in the treatment of moderate to severe Alzheimer type of dementia.

It works by preventing activity of glutamate in the brain which may reduce symptoms of Alzheimer. It does not cure the Alzheimer disease.

It is available in the capsule (extended release form), tablet and solution form and only with your doctor’s prescription.

2 What to Know Before Using

Before using Namenda, you must know all about the risks and complications associated with it.


Inform your doctor if you are allergic to any food, preservatives, dyes, or had an allergic reaction when you used this drug before.


There are no adequate studies done which prove Memantine’s harmful effects in children. It is not expected to cause different effects than adults. However, safety and efficacy have not been established.


This medicine does not cause any different side effects or problem than it does in younger adults. However, it should be used with caution.


It is a category B drug. It is safe to use in pregnancy.

Breast Feeding

Memantine is not known if it can pass into breast milk or not. If you are using it while nursing, discuss the potential risks with your doctor.

Drug Interactions

Memantine may interact with other drugs. Your doctor should be informed of any other medicines which you are taking. He may want to change the dosage or drug. Some of them are listed below:

  • Amantadine
  • Carbonic anhydrase inhibitors (acetazolamide)
  • Dextromethorphan
  • Ketamine
  • Sodium bicarbonate
  • Brinzolamide
  • Methazolamide
  • Bupropion

Other Medical Conditions

Several other conditions may reduce its effectiveness.

Make sure you inform your doctor of conditions such as:

Have a question aboutNamenda (Oral)?Ask a doctor now

3 Proper Usage

Proper usage of Namenda requires strict adherence to your doctor’s orders. Read the medication guide carefully. Ask your pharmacist if you have any queries.

Take this medicine by mouth with a full glass of water with or without food. Swallow it as a whole, do not crush, chew or break it.

If you have difficulty in swallowing extended release form of a capsule, you can open and pour it in a small amount of soft food (applesauce), mix it and swallow it without chewing.


It is different for different patients. Dosage mentioned below is an average dose. You must follow your doctor’s instructions.

Extended release capsules form

  • Adults: 7 milligrams (mg) per day. The dose is usually not more than 28 mg per day.

Solution and tablets forms

  • Adults: 5mg per day. The dose is usually not more than 10 mg.
  • The dose of children is determined by your doctor in both types of medicine.

Missed dose

If you miss a dose, take it as soon as you remember it. If it almost a time for your next dose skip the missed dose and continue your daily schedule. Doubling the dose is harmful.


Store it at room temperature. Keep it away from children.

4 Precautions to Take

Before using Namenda, there are some precautions you must take. Your doctor should check your daily progress at regular visits. He may want a blood or urine test to check for unwanted effects.

Tell your doctor or dentist that you take Memantine before you receive any medical or dental care, emergency care, or surgery. Do not take any other medicine unless it is discussed with your doctor.

Memantine may cause:

  • drowsiness,
  • dizziness,
  • blurred vision,
  • light-headedness.

These effects may be worse if you take it with alcohol or certain medicines. Use Memantine with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.

5 Potential Side Effects

As with many medications, there are several potential side effects associated with Namenda. Some people may experience none or minor side effects.

Consult with your doctor if they become problematic or frequent:

More common are:

Less common are:

  • Bloating or swelling of the face, arms, hands, lower legs, or feet.
  • Blurred vision
  • Dizziness
  • Headache
  • Nervousness
  • Pounding in the ears
  • Rapid weight gain
  • Slow or fast heartbeat
  • Tingling of the hands or feet.
  • Unusual weight gain or loss.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.