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Valtrex (Valacyclovir) - Encephalopathy - Suspected Cause - Side Effect Reports

 
 



Index of reports > Cases with Encephalopathy (42)

Below is the selection of side effect reports (a.k.a. adverse event reports) related to Valtrex (Valacyclovir) where reactions include encephalopathy. The selected reports were submitted to the FDA during the sample period of about a year.

 Reports 1 - 30 of 42   Next >>

Possible Valtrex side effects in 93 year old female

Reported by a physician from Japan on 2012-08-13

Patient: 93 year old female, weighing 37.0 kg (81.4 pounds)

Reactions: Hyperventilation, Soliloquy, Dyskinesia, Abnormal Behaviour, Encephalopathy, Somnolence, Logorrhoea

Drug(s) suspected as cause:
Valtrex



Possible Valtrex side effects in male

Reported by a pharmacist from Japan on 2012-08-08

Patient: male

Reactions: Overdose, Depressed Level of Consciousness, Encephalopathy, Nervous System Disorder

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Warfarin Sodium; Furosemide; Aspirin; Rocaltrol



Possible Valtrex side effects in female

Reported by a physician from Japan on 2012-08-01

Patient: female, weighing 39.0 kg (85.8 pounds)

Reactions: Dizziness, Encephalopathy, Gait Disturbance, Feeling Abnormal

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Norvasc; Crestor; Precipitated Calcium Carbonate; Nalfurafine Hydrochloride



Possible Valtrex side effects in 71 year old female

Reported by a physician from Japan on 2012-07-25

Patient: 71 year old female, weighing 37.0 kg (81.4 pounds)

Reactions: Encephalopathy, CSF Cell Count Increased, Pyrexia, Speech Disorder, Dysstasia, Dizziness, Meningitis, Altered State of Consciousness

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Ceftriaxone



Possible Valtrex side effects in male

Reported by a physician from Japan on 2012-07-23

Patient: male

Reactions: Restlessness, Dehydration, Encephalopathy, Blood Creatinine Increased, Hallucination, Renal Failure Acute

Adverse event resulted in: hospitalization

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

Valtrex
    Dosage: 3000mg per day
    Administration route: Oral
    Indication: Herpes Zoster
    Start date: 2012-03-09
    End date: 2012-03-12

Other drugs received by patient: Furosemide; Urinorm; Calblock; Carvedilol; Vitamin B12; Plavix; Crestor; Azunol; Famotidine; Enalapril Maleate; Allopurinol; Anplag



Possible Valtrex side effects in male

Reported by a physician from Japan on 2012-07-23

Patient: male

Reactions: Renal Failure, Encephalopathy, Altered State of Consciousness, Infection

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex



Possible Valtrex side effects in female

Reported by a physician from Japan on 2012-07-10

Patient: female, weighing 39.0 kg (85.8 pounds)

Reactions: Encephalopathy, Dizziness, Gait Disturbance, Feeling Abnormal

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Precipitated Calcium Carbonate; Remitch (Nalfurafine Hydrochloride); Crestor; Norvasc



Possible Valtrex side effects in female

Reported by a physician from Japan on 2012-07-05

Patient: female, weighing 47.0 kg (103.4 pounds)

Reactions: Femur Fracture, Scab, Disorientation, Fall, Somnolence, Groin Pain, Dyslalia, Loss of Consciousness, Joint Range of Motion Decreased, Pleural Effusion, Encephalopathy, Rash, Convulsion, Dysarthria, Depressed Level of Consciousness, Altered State of Consciousness

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Zovirax



Possible Valtrex side effects in female

Reported by a physician from Japan on 2012-07-03

Patient: female

Reactions: Dizziness, Encephalopathy, Gait Disturbance, Feeling Abnormal

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Precipitated Calcium Carbonate; Norvasc; Crestor; Remitch (Nalfurafine Hydrochloride)



Possible Valtrex side effects in 17 year old female

Reported by a physician from United States on 2012-07-02

Patient: 17 year old female, weighing 74.4 kg (163.7 pounds)

Reactions: Agitation, Tachycardia, Coagulopathy, Blood Albumin Decreased, Treatment Noncompliance, Herpes Zoster, Rash Pruritic, Metapneumovirus Infection, Nystagmus, Oedema Peripheral, Deafness Unilateral, Menorrhagia, Feeling of Despair, Metabolic Acidosis, Rhinovirus Infection, Pain in Extremity, Family Stress, Anaemia, Encephalopathy, Toxicity To Various Agents, Cardiomyopathy, Tremor, Aggression, Hepatic Steatosis, Fungal Infection, Dehydration, Rash Erythematous, Aspartate Aminotransferase Increased, Pancreatitis, Haemolytic Anaemia, Diabetic Ketoacidosis, Mobility Decreased, Electrocardiogram QT Prolonged, Atelectasis, Otitis Media Chronic, Suicidal Ideation, Hypokalaemia, Speech Disorder, Myalgia, Fungaemia, Arthritis Reactive, Pleural Effusion, Tachypnoea, Opportunistic Infection, Depression, Apparent Life Threatening Event, Electrolyte Imbalance, Thrombocytopenia, Lethargy, Self-Injurious Ideation, Blood Glucose Increased, Renal Failure Acute, Pneumonia Bordetella, Fluid Overload, Type 2 Diabetes Mellitus, Alanine Aminotransferase Increased, Musculoskeletal Pain, Hyponatraemia, Ear Infection, Diarrhoea, Arthralgia, Sepsis, Progressive Multifocal Leukoencephalopathy

Adverse event resulted in: life threatening event, hospitalization

Drug(s) suspected as cause:
Isentress
    Dosage: 400 mg/bid/po
    Administration route: Oral
    Indication: HIV Infection
    Start date: 2008-02-08
    End date: 2009-01-14

Ceftazidime
    Dosage: /q8h/iv
    Indication: Pneumonia
    End date: 2010-05-12

Enalapril Maleate
    Dosage: /bid/po
    Administration route: Oral
    Indication: Cardiomyopathy
    End date: 2010-05-12

Valtrex
    Dosage: /bid/po
    Administration route: Oral
    Indication: Prophylaxis
    End date: 2010-05-12

Vancomycin
    Dosage: /q8h/iv
    Indication: Pyrexia
    End date: 2010-05-12

Other drugs received by patient: Pentamidine Isethionate



Possible Valtrex side effects in female

Reported by a pharmacist from Japan on 2012-06-27

Patient: female, weighing 46.0 kg (101.2 pounds)

Reactions: Retrograde Amnesia, Abasia, Encephalopathy, Abnormal Behaviour, Mental Impairment, Activities of Daily Living Impaired, Apraxia, Hemisensory Neglect, Dizziness, Disturbance in Attention

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Lendormin; Risedronate Sodium; Edirol; Amlodipine; Candesartan Cilexetil



Possible Valtrex side effects in female

Reported by a physician from Japan on 2012-06-21

Patient: female

Reactions: Blood Urea Increased, Encephalopathy, Ataxia, Thirst, Loss of Consciousness, Cholelithiasis, Speech Disorder, Blood Sodium Decreased, Blood Creatinine Increased, Renal Failure Acute

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Zetia; Arasena-A; Gascon; Candesartan Cilexetil; Magnesium Oxide



Possible Valtrex side effects in

Reported by a pharmacist from Japan on 2012-06-21

Patient:

Reactions: Dialysis, Encephalopathy, Accidental Overdose

Drug(s) suspected as cause:
Valtrex



Possible Valtrex side effects in female

Reported by a pharmacist from Japan on 2012-06-18

Patient: female, weighing 46.0 kg (101.2 pounds)

Reactions: Retrograde Amnesia, Abasia, Abnormal Behaviour, Encephalopathy, Mental Impairment, Activities of Daily Living Impaired, Apraxia, Hemisensory Neglect, Dizziness, Disturbance in Attention

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Risedronate Sodium; Lendormin; Candesartan Cilexetil; Amlodipine; Edirol



Possible Valtrex side effects in 70 year old female

Reported by a pharmacist from Japan on 2012-06-12

Patient: 70 year old female, weighing 42.0 kg (92.4 pounds)

Reactions: Renal Impairment, Encephalopathy, Disturbance in Attention, Blood Creatinine Increased, Altered State of Consciousness, Thalamic Infarction

Drug(s) suspected as cause:
Valtrex
    Dosage: 3000mg per day
    Administration route: Oral
    Indication: Herpes Zoster
    Start date: 2011-08-05
    End date: 2011-08-09

Valtrex
    Dosage: 2000mg per day
    Start date: 2011-08-10
    End date: 2011-08-10

Valtrex
    Dosage: 1000mg per day
    Start date: 2011-08-11
    End date: 2011-08-11



Possible Valtrex side effects in 83 year old female

Reported by a physician from Japan on 2012-06-08

Patient: 83 year old female

Reactions: Agitation, Dizziness, Encephalopathy, Nephropathy

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Vidarabine



Possible Valtrex side effects in female

Reported by a physician from Japan on 2012-05-25

Patient: female

Reactions: Vomiting, Encephalopathy, Dysarthria, Malaise, Renal Impairment, Dizziness, Blood Creatinine Increased, Decreased Appetite, Renal Failure Acute

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Amaryl; Metformin HCL; Micardis; Glucobay; Norvasc



Possible Valtrex side effects in 60 year old female

Reported by a physician from Japan on 2012-05-25

Patient: 60 year old female

Reactions: Dysarthria, Encephalopathy, Dizziness, Blood Creatinine Increased, Renal Failure Acute, Decreased Appetite

Drug(s) suspected as cause:
Valtrex



Possible Valtrex side effects in 63 year old female

Reported by a physician from Japan on 2012-05-22

Patient: 63 year old female, weighing 47.0 kg (103.4 pounds)

Reactions: Femur Fracture, Scab, Encephalopathy, Rash, Convulsion, Groin Pain, Dyslalia, Dysarthria, Joint Range of Motion Decreased, Pleural Effusion, Altered State of Consciousness

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Acyclovir



Possible Valtrex side effects in 60 year old female

Reported by a consumer/non-health professional from Japan on 2012-05-17

Patient: 60 year old female

Reactions: Dysarthria, Dizziness, Encephalopathy, Decreased Appetite, Renal Failure Acute

Drug(s) suspected as cause:
Valtrex



Possible Valtrex side effects in male

Reported by a physician from Japan on 2012-05-14

Patient: male, weighing 45.0 kg (99.0 pounds)

Reactions: Renal Disorder, Encephalopathy, Muscular Weakness, Dyslalia, Renal Failure Acute, Decreased Appetite

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Vitamin B12; Etodolac; Flivastatin Sodium



Possible Valtrex side effects in 63 year old female

Reported by a physician from Japan on 2012-04-30

Patient: 63 year old female, weighing 47.0 kg (103.4 pounds)

Reactions: Femur Fracture, Scab, Encephalopathy, Rash, Dyslalia, Convulsion, Groin Pain, Dysarthria, Joint Range of Motion Decreased, Pleural Effusion, Altered State of Consciousness

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Zovirax
    Administration route: Oral
    Indication: Herpes Zoster
    Start date: 2011-01-01
    End date: 2011-01-01

Valtrex
    Administration route: Oral
    Indication: Encephalitis Viral
    Start date: 2011-01-01
    End date: 2011-01-01



Possible Valtrex side effects in male

Reported by a physician from Japan on 2012-04-30

Patient: male

Reactions: Renal Disorder, Encephalopathy, Muscular Weakness, Renal Failure Acute, Dyslalia, Decreased Appetite

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Vitamin B12; Etodolac; Flivas



Possible Valtrex side effects in male

Reported by a physician from Japan on 2012-04-04

Patient: male

Reactions: Speech Disorder, Renal Impairment, Dehydration, Encephalopathy, Disorientation, Eating Disorder

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex



Possible Valtrex side effects in male

Reported by a physician from Japan on 2012-04-04

Patient: male, weighing 51.0 kg (112.2 pounds)

Reactions: Hepatic Function Abnormal, Malaise, C-Reactive Protein Increased, Blood Creatinine Increased, Decreased Appetite, Blood Urea Increased, Blood Lactate Dehydrogenase Increased, Alanine Aminotransferase Increased, Encephalopathy, Blood Potassium Increased, Cerebral Atrophy, Renal Failure Chronic, Tremor, Dysstasia, Renal Impairment, Aspartate Aminotransferase Increased, Dehydration, Skin Erosion, Depressed Level of Consciousness, Asthenia

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Plavix; Celestamine TAB; Carvedilol; Vidarabine; Telmisartan / Hydrochlorothiazide



Possible Valtrex side effects in 84 year old female

Reported by a pharmacist from Japan on 2012-03-20

Patient: 84 year old female

Reactions: Encephalopathy, Gait Disturbance

Drug(s) suspected as cause:
Valtrex
    Dosage: 500mg per day
    Administration route: Oral
    Indication: Product Used FOR Unknown Indication
    Start date: 2007-01-01

Dogmatyl
    Indication: Product Used FOR Unknown Indication



Possible Valtrex side effects in female

Reported by a physician from Japan on 2012-03-07

Patient: female

Reactions: Blood Alkaline Phosphatase Increased, Electroencephalogram Abnormal, Gamma-Glutamyltransferase Increased, Encephalopathy, Dizziness, Nervous System Disorder, Cognitive Disorder

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex

Other drugs received by patient: Glimicron; Risedronate Sodium; Lipitor; Acyclovir; Basen



Possible Valtrex side effects in male

Reported by a pharmacist from Japan on 2012-02-21

Patient: male

Reactions: Blood Urea Increased, Urinary Tract Infection, Encephalopathy, Abnormal Behaviour, Tonic Convulsion, Fall, Logorrhoea, Dysarthria, C-Reactive Protein Increased, Azotaemia, Blood Creatinine Increased, Altered State of Consciousness

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex
    Dosage: 1500mg per day
    Administration route: Oral
    Indication: Herpes Zoster
    Start date: 2011-12-13
    End date: 2011-12-15

Warfarin Sodium
    Dosage: 1mg per day
    Administration route: Oral
    Indication: Thrombosis

Eviprostat
    Dosage: 3iuax per day
    Administration route: Oral
    Indication: Benign Prostatic Hyperplasia

Clarithromycin
    Dosage: 200mg per day
    Administration route: Oral
    Indication: Chronic Obstructive Pulmonary Disease

Lansoprazole
    Dosage: 15mg per day
    Administration route: Oral
    Indication: Gastric Ulcer

Hokunalin

Mucodyne
    Dosage: 1500mg per day
    Administration route: Oral
    Indication: Chronic Obstructive Pulmonary Disease

Other drugs received by patient: Diflunisal; Ebrantil



Possible Valtrex side effects in

Reported by a physician from Japan on 2012-02-14

Patient:

Reactions: Overdose, Encephalopathy

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Valtrex



Possible Valtrex side effects in 85 year old female

Reported by a physician from Japan on 2012-02-14

Patient: 85 year old female

Reactions: Urine Output Decreased, Blood Potassium Increased, Encephalopathy, Headache, Micturition Frequency Decreased, Abdominal Discomfort, Dyspepsia, Decreased Appetite, Renal Failure Acute

Drug(s) suspected as cause:
Valtrex



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