Admenta XR 14 Tablet
Memantine Hydrochloride
14mg
Sun Pharmaceutical Industries Ltd.
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Available as:
Indications
Admenta XR 14 Tablet is used for:
Alzheimer's dementia.
Adult Dose
Oral
Moderate to severe dementia in Alzheimer's disease
Adult: As hydrochloride: Initially, 5 mg daily in the morning for the 1st wk; increase dose wkly in steps of 5 mg. Max: 20 mg daily. Wait for at least 1 wk between dose changes. Doses >10 mg/day should be given in 2 divided doses.
Suggested titration: 5 mg daily for >1 wk; 5 mg bid for >1 wk; 15 mg daily given in 5- and 10-mg separated doses for >1 wk; then 10 mg bid.
Hepatic impairment
Mild or moderate (Child Pugh A/B): No dosage adjustment required
Severe (Child Pugh C): Caution
Child Dose
Renal Dose
Renal impairment:
CrCl (ml/min) Dosage Recommendation
5-29 Max: 10 mg daily.
30-49 10 mg daily (after initial dose of 5 mg daily), if well tolerated for at least 7 days, may increase to 20 mg daily.
Administration
May be taken with or without food.
Contra Indications
Hypersensitivity to memantine or components of the formulation. Severe renal impairment.
Precautions
Renal impairment; epilepsy. Pregnancy and lactation. Closely monitor patients with recent MI, uncompensated CHF, uncontrolled hypertension. Predisposition to convulsions; conditions that increase urinary pH.
Lactation: Unknown whether drug is excreted into breast milk; use with caution
Pregnancy-Lactation
Interactions
May increase effects of antimuscarinics and dopaminergics. May reduce effects of antipsychotics and barbiturates. May alter effects of dantrolene, baclofen. Reduced clearance with carbonic anhydrase inhibitors and sodium bicarbonate.
Potentially Fatal: Increased risk of adverse effects with amantadine, dextromethorphan or ketamine.
Adverse Effects
Side effects of Memantine Hydrochloride :
1-10%
Dizziness (7%),Confusion (6%),Headache (6%),Constipation (5%),Cough (4%),Hypertension (4%),Backache (3%),Pain (3%),Somnolence (3%),Syncope (3%),Vomiting (3%),Dyspnea (2%),Fatigue (2%)
<1%
Acute renal failure,Cerebral infarction,Cerebrovascular accident,Deep venous thrombosis,Hepatitis, liver failure,Intracranial hemorrhage,Neuroleptic malignant syndrome,Seizure (including grand mal),Stevens-Johnson syndrome,Transient ischemic attack
Mechanism of Action
Memantine, a derivative of amantadine, is a noncompetitive N-methyl-D-aspartate (NMDA)-receptor antagonist. It affects transmission of glutamate, the primary excitatory neurotransmitter in the CNS. Glutamate may contribute to the pathogenesis of Alzheimer's disease by overstimulating various glutamate receptors resulting in excitotoxicity and neuronal cell death.
Note
Admenta XR 14 14mg Tablet manufactured by Sun Pharmaceutical Industries Ltd.. Its generic name is Memantine Hydrochloride. Admenta XR 14 is availble in Nepal.
Farmaco Nepal drug index information on Admenta XR 14 Tablet is not intended for diagnosis, medical advice or treatment; neither intended to be a substitute for the exercise of professional judgment.