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Memantine HCl ER
Memantine HCl ER (extended-release) is a medication used in the treatment of Alzheimer's disease. It is an NMDA receptor antagonist that helps regulate glutamate levels in the brain, which can be beneficial for improving cognitive function and slowing the progression of symptoms in patients with moderate to severe Alzheimer's disease.
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Frequently Asked Questions
How long does it take for memantine ER to work?
Patients may begin to notice improvements in cognitive function within a few weeks, but it can take longer for full effects to be seen.
Can I take memantine ER with other medications?
Always inform your healthcare provider of all medications you are taking to avoid potential interactions, especially with other CNS-active drugs.
What should I do if I miss a dose?
If you miss a dose, take it as soon as you remember. If it’s close to the time for your next dose, skip the missed dose and continue with your regular schedule. Do not double up doses.
Are there any dietary restrictions while taking memantine ER?
There are no specific dietary restrictions associated with memantine, but maintaining a balanced diet is advisable.
Is memantine ER safe during pregnancy or breastfeeding?
Consult your healthcare provider if you are pregnant or breastfeeding to discuss the risks and benefits of using memantine ER.
Comprehensive Drug Guide
How Does Memantine HCl ER Work?
Memantine works by selectively blocking NMDA receptors in the brain. Excessive activation of these receptors by glutamate can lead to neuronal damage. By modulating NMDA receptor activity, memantine helps protect neurons from excitotoxicity while allowing for normal synaptic transmission.
What is Memantine HCl ER Used For?
Common Dosages
- Extended-release tablets: 7 mg, 14 mg, 21 mg, and 28 mg.
Typical Dosing
- The usual starting dose is 7 mg once daily, which may be increased by 7 mg weekly based on patient tolerance and clinical response, up to a maximum dose of 28 mg once daily.
Typical Dosing
FDA Approved Indications
- Alzheimer's Disease: treatment of moderate to severe Alzheimer's disease in adults.
Who Shouldn't Take Memantine HCl ER?
- Known hypersensitivity to memantine or any component of the formulation.
Advice From The Pharmacist
- Take memantine at the same time each day to maintain consistent levels in the bloodstream.
- Inform your healthcare provider of any other medications you are taking to avoid potential interactions.
- Monitor for any changes in cognitive function or side effects, and report them to your healthcare provider.
Side Effects of Memantine HCl ER
Common Side Effects
- Dizziness
- Headache
- Confusion
- Constipation
Uncommon/Severe Side Effects
- Severe allergic reactions (rash, itching, swelling)
- Agitation or aggressive behavior
Risks and Warnings of Memantine HCl ER
- Cognitive Changes: Monitor for changes in mood or behavior, as memantine may affect some patients' mental health.
- Renal Function: Caution is advised in patients with moderate to severe renal impairment; dosage adjustments may be necessary.
- Seizure History: Patients with a history of seizures should be monitored closely, as NMDA antagonists can influence seizure threshold.
Interactions with Memantine HCl ER
Common Drug Interactions
- Other NMDA Antagonists: Use with caution as it may increase the risk of adverse effects.
- Carbonic Anhydrase Inhibitors: Such as acetazolamide, may increase the risk of adverse effects due to their potential impact on renal function.
Alternatives to Memantine HCl ER
- Cholinesterase Inhibitors: Such as donepezil or rivastigmine, may be used for Alzheimer's disease and can be used alone or in combination with memantine.
- Other Cognitive Enhancers: Investigational agents or newer treatments for Alzheimer's disease may also be considered.
