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Namenda (Memantine) - Side Effect Reports to FDA

 
 



This is an index of side effect / adverse reaction reports (a.k.a. adverse event reports) related to Namenda (Memantine) and submitted to the FDA during the sample period of about a year. The information is not vetted and should not be considered as verified clinical evidence.

Reports by Event Outcome

All Cases (47)
Death (4)
Life Threatening Events (3)
Disability (1)

Reports by Reaction Type

Confusional State (7)Dizziness (5)Abnormal Behaviour (5)Tremor (5)Movement Disorder (4)Drug Interaction (4)Off Label Use (4)Asthenia (4)Thinking Abnormal (3)Balance Disorder (3)Musculoskeletal Stiffness (3)Myocardial Infarction (3)

Below are a few examples of reports where side effects / adverse reactions may be related to Namenda (Memantine). For a complete list or a specific selection of reports, please use the links above.

Possible Namenda side effects in 80 year old male

Reported by a consumer/non-health professional from United States on 2012-08-24

Patient: 80 year old male, weighing 73.0 kg (160.6 pounds)

Reactions: Blood Pressure Increased, Weight Decreased, Confusional State, Cognitive Disorder, Amnesia, Tremor, Off Label Use, Thinking Abnormal, Malaise, Dizziness, Lethargy

Drug(s) suspected as cause:
Amlodipine
    Indication: Hypertension
    End date: 2012-05-01

Clonazepam
    Dosage: 1/2 tablet qd
    Indication: Rapid Eye Movements Sleep Abnormal
    Start date: 2011-08-01
    End date: 2012-08-20

Namenda
    Dosage: 10 mg bid
    Administration route: Oral
    Indication: Fahr's Disease
    Start date: 2011-08-01

Other drugs received by patient: Galantamine Hydrobromide; Atenolol; Plavix; Aspirin



Possible Namenda side effects in 80 year old female

Reported by a physician from United States on 2012-08-17

Patient: 80 year old female

Reactions: Cognitive Disorder, Hallucination

Drug(s) suspected as cause:
Namenda
    Dosage: 5 mg bid
    Administration route: Oral
    Start date: 2012-07-01
    End date: 2012-07-01

Namenda
    Dosage: 5 mg bid
    Administration route: Oral
    Start date: 2012-01-01
    End date: 2012-06-30

Namenda
    Dosage: 5 mg
    Administration route: Oral
    Indication: Dementia Alzheimer's Type
    Start date: 2012-01-01
    End date: 2012-01-01

Namenda
    Dosage: 10 mg am, 5 mg pm
    Start date: 2012-07-01
    End date: 2012-07-01

Other drugs received by patient: Coumadin



Possible Namenda side effects in female

Reported by a health professional (non-physician/pharmacist) from United States on 2012-08-03

Patient: female

Reactions: Confusional State, Drug Screen Positive, Tremor

Drug(s) suspected as cause:
Aricept
    Dosage: unk
    Administration route: Oral

Cyclobenzaprine
    Dosage: unk
    Administration route: Oral

Gabapentin
    Dosage: unk
    Administration route: Oral

Ibuprofen (Advil)
    Dosage: unk
    Administration route: Oral

Lisinopril
    Dosage: unk
    Administration route: Oral

Nabumetone
    Dosage: unk
    Administration route: Oral

Namenda
    Dosage: unk
    Administration route: Oral

Remeron
    Dosage: unk
    Administration route: Oral

Tramadol HCL
    Dosage: unk
    Administration route: Oral



Possible Namenda side effects in female

Reported by a consumer/non-health professional from United States on 2012-07-27

Patient: female

Reactions: Movement Disorder, Drug Dose Omission, Musculoskeletal Stiffness, Asthenia, Tremor

Drug(s) suspected as cause:
Namenda

Seroquel
    Administration route: Oral

Zoloft



Possible Namenda side effects in

Reported by a health professional (non-physician/pharmacist) from United States on 2012-07-18

Patient:

Reactions: Drug Screen Positive

Drug(s) suspected as cause:
Advil
    Dosage: unk

Aricept
    Dosage: unk

Cyclobenzaprine
    Dosage: unk

Gabapentin
    Dosage: unk

Lisinopril
    Dosage: unk

Nabumetone
    Dosage: unk

Namenda
    Dosage: unk

Remeron
    Dosage: unk

Tramadol HCL
    Dosage: unk



Possible Namenda side effects in female

Reported by a health professional (non-physician/pharmacist) from United States on 2012-07-13

Patient: female

Reactions: HIP Fracture

Drug(s) suspected as cause:
Aricept
    Start date: 2012-01-01

Namenda
    Start date: 2012-01-01



Possible Namenda side effects in 80 year old female

Reported by a physician from United States on 2012-07-12

Patient: 80 year old female

Reactions: Cognitive Disorder, Hallucination

Drug(s) suspected as cause:
Namenda
    Dosage: 10 mg am, 5 mg pm
    Administration route: Oral
    Start date: 2012-07-01

Namenda
    Dosage: 5 mg
    Administration route: Oral
    Indication: Dementia Alzheimer's Type
    Start date: 2012-01-01
    End date: 2012-01-01

Namenda
    Dosage: 5 mg bid
    Administration route: Oral
    Start date: 2012-01-01
    End date: 2012-06-30

Other drugs received by patient: Coumadin



Possible Namenda side effects in female

Reported by a health professional (non-physician/pharmacist) from United States on 2012-06-26

Patient: female, weighing 41.7 kg (91.7 pounds)

Reactions: Drug Ineffective, Anaemia, Dehydration, Mental Status Changes

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Bapineuzumab VS Placebo
    Indication: Dementia Alzheimer's Type
    Start date: 2010-09-09
    End date: 2011-08-26

Lexapro
    Dosage: 10 mg
    Administration route: Oral
    Indication: Depression
    Start date: 2008-05-01
    End date: 2011-10-01

Namenda
    Dosage: 20 mg
    Administration route: Oral
    Indication: Dementia Alzheimer's Type
    Start date: 2009-06-10
    End date: 2011-08-01

Other drugs received by patient: Centrum; Omeprazole; Metformin HCL; Ramipril; Aspirin; Simvastatin; Exelon



Possible Namenda side effects in male

Reported by a health professional (non-physician/pharmacist) from United States on 2012-06-25

Patient: male

Reactions: Dementia, Nervous System Disorder, Abnormal Behaviour, Drug Interaction

Drug(s) suspected as cause:
Antihistamine
    Start date: 2010-09-01
    End date: 2010-09-01

Aspirin
    Indication: Anticoagulant Therapy
    Start date: 2010-09-01
    End date: 2010-09-01

Ativan
    Start date: 2010-09-01
    End date: 2010-09-01

Exelon
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-01
    End date: 2010-09-01

Lamictal
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-01
    End date: 2010-09-01

Namenda
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-01
    End date: 2010-09-01

Neurontin
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-07
    End date: 2010-09-01

Remeron
    Indication: Depression
    Start date: 2010-09-01
    End date: 2010-09-01

Temazepam
    Indication: Sleep Disorder
    Start date: 2010-09-01
    End date: 2010-09-01

Trazodone HCL
    Indication: Depression
    Start date: 2010-09-01
    End date: 2010-09-01

Vistaril
    Start date: 2010-09-01
    End date: 2010-09-01

Other drugs received by patient: Acetaminophen



Possible Namenda side effects in 81 year old male

Reported by a consumer/non-health professional from United States on 2012-06-21

Patient: 81 year old male, weighing 52.0 kg (114.4 pounds)

Reactions: Confusional State, Balance Disorder

Drug(s) suspected as cause:
Megace
    Administration route: Oral
    Indication: Weight Decreased
    Start date: 2012-04-27
    End date: 2012-04-30

Megace
    Administration route: Oral
    Indication: Decreased Appetite
    Start date: 2012-04-27
    End date: 2012-04-30

Namenda
    Dosage: form: tabs
    Administration route: Oral
    Indication: Dementia
    Start date: 2012-04-27
    End date: 2012-04-30

Other drugs received by patient: Nexium; Glucosamine; Flomax; Multi-Vitamins; Asmanex Twisthaler; Exelon; Spiriva



Possible Namenda side effects in male

Reported by a health professional (non-physician/pharmacist) on 2012-06-18

Patient: male

Reactions: Off Label Use, Thinking Abnormal, Drug Interaction, Unevaluable Event

Drug(s) suspected as cause:
Namenda

Other drugs received by patient possibly interacting with the suspect drug:
Aspirin
    Indication: Antiplatelet Therapy
    Start date: 2010-09-01
    End date: 2010-09-01

Ativan
    Start date: 2010-09-01
    End date: 2010-09-01

Exelon
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-01
    End date: 2010-09-01

Lamictal
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-01
    End date: 2010-09-01

Neurontin
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-07
    End date: 2010-09-01

Remeron
    Indication: Depression
    Start date: 2010-09-01
    End date: 2010-09-01

Temazepam
    Indication: Sleep Disorder
    Start date: 2010-09-01
    End date: 2010-09-01

Trazodone HCL
    Indication: Depression
    Start date: 2010-09-01
    End date: 2010-09-01

Unspecified Antihistaminics
    Start date: 2010-09-01
    End date: 2010-09-01

Vistaril
    Start date: 2010-09-01
    End date: 2010-09-01

Other drugs received by patient: Acetaminophen



Possible Namenda side effects in male

Reported by a health professional (non-physician/pharmacist) from United States on 2012-06-18

Patient: male

Reactions: Abnormal Behaviour, Dementia With Lewy Bodies, Drug Interaction, Feeling Abnormal

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Aspirin
    Indication: Anticoagulant Therapy
    Start date: 2010-09-01
    End date: 2010-09-01

Ativan
    Indication: Product Used FOR Unknown Indication
    Start date: 2010-09-01
    End date: 2010-09-01

Exelon
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-01
    End date: 2010-09-01

Lamictal
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-01
    End date: 2010-09-01

Namenda
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-01
    End date: 2010-09-01

Neurontin
    Dosage: 400 mg;qd; 300 mg;tid; 100 mg;bid; 200 mg; 300 mg;tid; 200 mg;
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-12

Neurontin
    Dosage: 400 mg;qd; 300 mg;tid; 100 mg;bid; 200 mg; 300 mg;tid; 200 mg;
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-08

Neurontin
    Dosage: 400 mg;qd; 300 mg;tid; 100 mg;bid; 200 mg; 300 mg;tid; 200 mg;
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-17

Neurontin
    Dosage: 400 mg;qd; 300 mg;tid; 100 mg;bid; 200 mg; 300 mg;tid; 200 mg;
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-18

Neurontin
    Dosage: 400 mg;qd; 300 mg;tid; 100 mg;bid; 200 mg; 300 mg;tid; 200 mg;
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-07
    End date: 2010-09-01

Neurontin
    Dosage: 400 mg;qd; 300 mg;tid; 100 mg;bid; 200 mg; 300 mg;tid; 200 mg;
    Indication: Dementia With Lewy Bodies
    Start date: 2010-09-14

Remeron
    Indication: Depression
    Start date: 2010-09-01
    End date: 2010-09-01

Temazepam
    Indication: Sleep Disorder
    Start date: 2010-09-01
    End date: 2010-09-01

Trazodone HCL
    Indication: Depression
    Start date: 2010-09-01
    End date: 2010-09-01

Vistaril
    Indication: Product Used FOR Unknown Indication
    Start date: 2010-09-01
    End date: 2010-09-01

Other drugs received by patient: Acetaminophen



Possible Namenda side effects in 49 year old female

Reported by a individual with unspecified qualification from United States on 2012-06-14

Patient: 49 year old female

Reactions: Movement Disorder, Body Temperature Increased, Mood Swings, Hypertension, Muscle Disorder, Fall, Constipation, Arrhythmia

Drug(s) suspected as cause:
Namenda
    Dosage: once a day po
    Administration route: Oral
    Indication: Mood Swings

Nuedexta
    Dosage: 2 times a day po
    Administration route: Oral
    Indication: Pain

Other drugs received by patient: Ambien; Amatriptomine; Topatol; Pantoprazone; Vikoden; Suldotosone; Aspirin; Colanzepan; Gavopentin; Meloxicam; Lorazepam



Possible Namenda side effects in 83 year old female

Reported by a consumer/non-health professional from United States on 2012-06-04

Patient: 83 year old female

Reactions: Thinking Abnormal, Fear, NO Therapeutic Response, Abnormal Behaviour, Emotional Disorder, Feeling Abnormal

Drug(s) suspected as cause:
Aricept
    Dosage: 10mg once daily
    Indication: Dementia
    Start date: 2012-03-17
    End date: 2012-06-07

Namenda
    Dosage: 10mg twice daily
    Indication: Dementia
    Start date: 2012-03-10
    End date: 2012-06-01



Possible Namenda side effects in 84 year old male

Reported by a physician from United States on 2012-05-30

Patient: 84 year old male, weighing 63.5 kg (139.7 pounds)

Reactions: Palpitations

Drug(s) suspected as cause:
Apokyn
    Dosage: 0.2-0.3 ml, 2-4 times daily, as needed, subcutaneous
    Indication: Parkinson's Disease
    Start date: 2011-07-14
    End date: 2012-02-02

Namenda
    Dosage: 10 mg tablet, 2 times daily, oral
    Administration route: Oral
    Indication: Memory Impairment

Sinemet
    Dosage: 25/100 mg, half tablet, 5 times daily, oral
    Administration route: Oral
    Indication: Parkinson's Disease

Sinemet
    Dosage: 25/100 mg tablet, 4 times daily, oral 50/200 every day at night
    Administration route: Oral
    Indication: Parkinson's Disease

Other drugs received by patient: Stool Softner; Miralax; Aspirin; Murinex; Flaxseed OIL; Multi-Vitamins; Sugar Free Cough Drops; Magnesium Phosphate



Possible Namenda side effects in 81 year old male

Reported by a consumer/non-health professional from United States on 2012-05-22

Patient: 81 year old male, weighing 52.0 kg (114.4 pounds)

Reactions: Confusional State, Balance Disorder

Drug(s) suspected as cause:
Megace
    Indication: Weight Decreased
    Start date: 2012-04-27
    End date: 2012-04-30

Megace
    Indication: Decreased Appetite
    Start date: 2012-04-27
    End date: 2012-04-30

Namenda
    Dosage: form: tabs
    Administration route: Oral
    Indication: Dementia
    Start date: 2012-04-27
    End date: 2012-04-30

Other drugs received by patient: Flomax; Spiriva; Nexium; Exelon; Asmanex Twisthaler; Multi-Vitamins; Glucosamine



Possible Namenda side effects in 84 year old male

Reported by a consumer/non-health professional from United States on 2012-05-02

Patient: 84 year old male

Reactions: Blood Pressure Increased, Anal Abscess, Accidental Overdose

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Namenda
    Start date: 2009-01-01
    End date: 2012-01-01

Namenda
    Dosage: 20 mg
    Administration route: Oral
    Start date: 2012-01-01

Namenda
    Dosage: 5 mg
    Administration route: Oral
    Indication: Dementia
    Start date: 2009-01-01
    End date: 2009-01-01

Namenda
    Dosage: 10 mg
    Administration route: Oral
    Start date: 2009-01-01
    End date: 2009-01-01

Namenda
    Dosage: 5mg am/10mg pm
    Administration route: Oral
    Start date: 2009-01-01
    End date: 2009-01-01

Namenda
    Dosage: 40 mg
    Administration route: Oral
    Start date: 2012-01-01
    End date: 2012-01-01

Other drugs received by patient: Glyburide; Finasteride; Metoprolol Tartrate; Clonidine; Flomax; Carbidopa and Levodopa; Exelon; Warfarin Sodium; Lisinopril



Possible Namenda side effects in 92 year old female

Reported by a consumer/non-health professional from United States on 2012-04-20

Patient: 92 year old female

Reactions: Confusional State, Blood Sodium Decreased, Asthenia, Somnolence

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Aspirin
    Indication: Product Used FOR Unknown Indication

Benicar
    Indication: Hypertension

Calcium with Vitamin D / 00944201 /
    Indication: Product Used FOR Unknown Indication

Colace Capsules
    Indication: Faeces Hard

Lexapro
    Indication: Depression

Lutein / 01638501 /
    Indication: Product Used FOR Unknown Indication

Multivitamin / 00097801 /
    Indication: Product Used FOR Unknown Indication

Namenda
    Indication: Dementia Alzheimer's Type

Synthroid
    Indication: Hypothyroidism

Tenormin
    Indication: Hypertension

Travatan
    Indication: AGE-Related Macular Degeneration

Vitamin C / 00008001 /
    Indication: Product Used FOR Unknown Indication

Xanax
    Indication: Anxiety



Possible Namenda side effects in 68 year old female

Reported by a physician from United States on 2012-04-16

Patient: 68 year old female

Reactions: Off Label Use, Mania, Overdose, Suicide Attempt, Depression, Suicidal Ideation

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Namenda
    Dosage: 50 mg
    Administration route: Oral
    Start date: 2011-01-01
    End date: 2012-01-01

Namenda
    Dosage: 30 mg
    Administration route: Oral
    Start date: 2012-01-01

Namenda
    Administration route: Oral
    Indication: Migraine
    Start date: 2011-03-01
    End date: 2011-01-01

Other drugs received by patient: Lexapro; Imodium; Ativan; Actonel



Possible Namenda side effects in female

Reported by a consumer/non-health professional from United States on 2012-04-10

Patient: female

Reactions: Dementia, Abdominal Pain Upper

Drug(s) suspected as cause:
Namenda



Possible Namenda side effects in 85 year old male

Reported by a consumer/non-health professional from United States on 2012-04-09

Patient: 85 year old male

Reactions: Cerebrovascular Accident

Drug(s) suspected as cause:
Exelon
    Dosage: unk ukn, unk

Namenda
    Dosage: unk



Possible Namenda side effects in male

Reported by a physician from United States on 2012-03-30

Patient: male

Reactions: Hallucination, Visual

Drug(s) suspected as cause:
Exelon
    Dosage: 1 df, one per day (4.6 mg), transdermal

Lexapro
    Dosage: 5 mg, per day

Namenda
    Dosage: 2 df, 5 mg per day



Possible Namenda side effects in 92 year old female

Reported by a consumer/non-health professional from United States on 2012-02-27

Patient: 92 year old female

Reactions: Confusional State, Tooth Abscess, Condition Aggravated, Myocardial Infarction, Amnesia, Convulsion

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Namenda
    Dosage: 20 mg (20 mg, 1 in 1 d),oral
    Administration route: Oral
    Indication: Dementia Alzheimer's Type
    Start date: 2011-01-01
    End date: 2012-02-09

Namenda
    Dosage: 10 mg (10 mg, 1 in 1 d),oral
    Administration route: Oral
    Indication: Dementia Alzheimer's Type
    Start date: 2010-01-01
    End date: 2011-01-01

Other drugs received by patient: Aricept; Toprol(metoprolol Succinate)(metoprolol Succinate); Lipitor; Furosemide; Enalapril Maleate



Possible Namenda side effects in 84 year old male

Reported by a health professional (non-physician/pharmacist) from United States on 2012-02-14

Patient: 84 year old male, weighing 63.5 kg (139.7 pounds)

Reactions: Palpitations

Drug(s) suspected as cause:
Apokyn (Apomorphine Hydrochloride) (Apomorphine Hydrochloride) (Apomor
    Dosage: 0.2 ml in morning, 0.3 ml in afternoon, subcutaneous
    Indication: Parkinson's Disease
    Start date: 2011-07-14
    End date: 2012-02-02

Namenda
    Dosage: 10 mg tablet, two times daily, oral
    Administration route: Oral
    Indication: Memory Impairment

Sinemet
    Dosage: 25/100 mg tablet, four times daily, oral 50/200 every day at night
    Administration route: Oral
    Indication: Parkinson's Disease

Sinemet
    Dosage: 25/100 mg, half tablet, five times daily, oral
    Administration route: Oral
    Indication: Parkinson's Disease

Other drugs received by patient: Miralax; Stool Softner; Flaxseed OIL; Sugar Free Cough Drops; Magnesium Phosphate; Aspirin; Multi-Vitamins; Murinex



Possible Namenda side effects in 86 year old male

Reported by a consumer/non-health professional from United States on 2012-02-13

Patient: 86 year old male

Reactions: Dementia Alzheimer's Type

Drug(s) suspected as cause:
Aricept
    Dosage: unknown, unknown, oral
    Administration route: Oral
    Indication: Dementia Alzheimer's Type
    Start date: 2011-01-01

Namenda
    Dosage: unknown, unknown, oral
    Administration route: Oral
    Indication: Dementia Alzheimer's Type
    Start date: 2011-01-01



Possible Namenda side effects in 82 year old female

Reported by a consumer/non-health professional from United States on 2012-02-07

Patient: 82 year old female

Reactions: Confusional State, Agitation, Abnormal Behaviour, Aggression

Drug(s) suspected as cause:
Namenda

Other drugs received by patient: Amlodipine; Levothyroxine (Levothyroxine Sodium) (Levothyroxine Sodium)



Possible Namenda side effects in 78 year old male

Reported by a individual with unspecified qualification from United States on 2012-02-02

Patient: 78 year old male, weighing 36.3 kg (79.8 pounds)

Reactions: Affective Disorder, Balance Disorder, Aphasia, Amnesia, Loss of Consciousness, Convulsion

Adverse event resulted in: life threatening event, hospitalization, disablity

Drug(s) suspected as cause:
Namenda



Possible Namenda side effects in 52 year old female

Reported by a consumer/non-health professional from United States on 2012-01-29

Patient: 52 year old female

Reactions: Drug Ineffective, Oedema Peripheral, Injection Site Pain

Drug(s) suspected as cause:
Humira
    Start date: 2011-12-15

Humira
    Indication: Rheumatoid Arthritis
    Start date: 2011-09-01
    End date: 2011-09-01

Namenda
    Indication: Amnesia

Other drugs received by patient: Biotin; Omeprazole; Lexapro; Oxycontin; Arthrotec; Combivent; Crestor; Valium; Lamictal; Celebrex; Numoisyn; Metformin HCL; Motrin; Klonopin; Compazine; Hydrocodone Bitartrate; Trazodone HCL



Possible Namenda side effects in female

Reported by a pharmacist from United States on 2012-01-06

Patient: female

Reactions: Movement Disorder, Musculoskeletal Stiffness, Asthenia, Tremor

Drug(s) suspected as cause:
Namenda

Seroquel

Zoloft



Possible Namenda side effects in female

Reported by a consumer/non-health professional from United States on 2012-01-03

Patient: female

Reactions: Movement Disorder, Fatigue, Musculoskeletal Stiffness, Tremor

Drug(s) suspected as cause:
Namenda
    Dosage: unk

Seroquel
    Dosage: unk

Zoloft
    Dosage: unk

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