Admenta 5 Mg (Memantine)

Medicine overview

Admenta 5 Mg is a prescription medicine containing memantine hydrochloride, used to manage moderate to severe Alzheimer's disease. It belongs to a group of medicines called N-methyl-D-aspartate (NMDA) receptor antagonists, which help regulate certain chemical signals in the brain.

Alzheimer's disease gradually affects memory, thinking, communication and everyday activities. Admenta helps manage some of these symptoms by reducing excessive activity of a brain chemical called glutamate. The medicine may support cognitive function and daily functioning in some patients, but it does not cure Alzheimer's disease or stop its progression.

What it is used for

Admenta 5 Mg is primarily prescribed for managing symptoms of moderate to severe Alzheimer's dementia. It may help some patients maintain aspects of memory, attention, communication and their ability to perform everyday activities.

The medicine may also help manage certain behavioural symptoms associated with dementia, although individual responses vary.

Admenta does not reverse existing brain damage or prevent Alzheimer's disease from progressing. Doctors regularly assess its effectiveness and whether continued treatment remains appropriate.

Its use for other neurological or cognitive conditions is not an established indication for this product.

How it works

Admenta contains memantine, which regulates the activity of glutamate, a chemical messenger involved in learning and memory.

Glutamate normally helps nerve cells communicate. In Alzheimer's disease, excessive stimulation of certain glutamate receptors may interfere with normal brain signalling and contribute to nerve cell damage.

Memantine blocks excessive activity at NMDA receptors while allowing important normal signalling to continue. This may help some brain cells function more effectively.

As a result, certain symptoms involving memory, thinking and everyday functioning may improve or remain more stable for a period. The medicine does not repair damaged nerve cells or eliminate the underlying disease.

How it is taken

Admenta 5 Mg is taken by mouth according to the prescribing doctor's instructions.

Swallow the tablet with water.

It may be taken with or without food.

Take it consistently according to the prescribed schedule.

Memantine treatment commonly begins at a low dose, with gradual adjustments under medical supervision.

Do not increase, reduce or stop the prescribed dose independently.

If a dose is missed, do not take a double dose to compensate.

If treatment has been interrupted for several days, contact the prescriber before restarting. The dose may need reassessment.

Patients with severe kidney impairment may require a different dosing regimen.

A caregiver may need to help patients follow their prescribed treatment correctly. Regular medical reviews help determine whether the medicine continues to provide benefit.

Important warnings

Allergy: Do not use Admenta if there is a known allergy to memantine hydrochloride or another ingredient in the tablet.

Kidney impairment: Memantine is eliminated mainly through the kidneys. Severe kidney dysfunction can increase medicine exposure and may require dose adjustment.

Liver impairment: Patients with severe liver disease should use memantine cautiously under medical supervision.

Seizures: Tell the doctor about epilepsy or any previous seizures before treatment.

Heart conditions: A history of heart attack, heart failure or uncontrolled high blood pressure requires medical assessment.

Urinary conditions: Severe urinary tract infections and conditions that make urine more alkaline may reduce memantine elimination and increase its concentration in the body.

Medicine interactions: Amantadine, ketamine and dextromethorphan may interact with memantine because of overlapping NMDA receptor activity. Sodium bicarbonate and certain other medicines may also affect its elimination.

Other dementia medicines: Memantine is sometimes prescribed alongside donepezil. Combination treatment should follow the prescriber's assessment.

Driving and machinery: Dizziness, sleepiness, confusion and impaired balance can affect the ability to perform potentially dangerous activities.

Treatment interruption: Restarting after several missed days may require medical reassessment rather than simply resuming the previous regimen.

Seek urgent medical attention for breathing difficulty, swelling of the face or throat, severe allergic reactions, seizures, or symptoms suggesting a stroke or heart attack.

Side effects and monitoring

Common side effects:

Dizziness

Headache

Constipation

Confusion

Sleepiness

Balance problems

Increased blood pressure

Other reported effects include nausea, vomiting, diarrhoea, tiredness and changes in behaviour.

Less common or serious side effects:

Hallucinations

Seizures

Severe allergic reactions

Significant changes in mental state

Liver inflammation

Pancreatitis

Serious cardiovascular events reported during treatment

When medical attention is needed:

Contact a healthcare professional if dizziness, confusion, constipation or other side effects become persistent or troublesome.

Seek urgent medical help for hallucinations accompanied by severe distress, seizures, difficulty breathing, facial swelling, chest pain, sudden weakness or severe abdominal pain.

Monitoring:

Doctors may periodically assess memory, behaviour, everyday functioning, treatment tolerance and kidney function. Blood pressure and other medical conditions may also require monitoring.

Caregivers can help by reporting changes in symptoms, unusual behaviour, falls or difficulties taking the medicine.

Pregnancy

Memantine is not usually recommended during pregnancy because adequate human safety information is unavailable. Animal studies have identified potential developmental concerns at certain exposures. A doctor should assess the potential benefits and risks before considering treatment during pregnancy.

Breastfeeding

Memantine is not usually recommended during breastfeeding. There is insufficient information about its transfer into human breast milk and its effects on breastfed infants. A healthcare professional should assess treatment and feeding options.

Food, drink and interactions

Alcohol may worsen dizziness, sleepiness, confusion and impaired coordination associated with memantine. Avoid alcohol unless the prescribing healthcare professional has advised that consumption is appropriate.

Food and drink

Memantine tablets may be taken with or without food. No special meal timing is required. Significant dietary changes, particularly those affecting urine acidity, should be discussed with a healthcare professional because they may influence memantine elimination. Maintain normal food and fluid intake unless medically advised otherwise.

Storage

Store at controlled room temperature, generally 20–25°C, with permitted excursions of 15–30°C according to standard memantine tablet labelling. Protect from excessive heat and moisture. Keep the medicine in its original packaging, away from children and pets.