This is an index of side effect / adverse reaction reports (a.k.a. adverse event reports) related to Zovirax (Acyclovir) 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 (140)
Death (9)
Life Threatening Events (4)
Disability (6)
Reports by Reaction Type
Renal Failure Acute (28),
Dysarthria (11),
Pancytopenia (10),
Encephalopathy (10),
Rash (10),
Altered State of Consciousness (10),
Herpes Zoster (9),
Pneumonia (9),
Urinary Tract Infection (9),
Encephalitis (8),
Renal Failure (8),
Pyrexia (7)
Below are a few examples of reports where side effects / adverse reactions may be related to Zovirax (Acyclovir). For a complete list or a specific selection of reports, please use the links above.
Possible Zovirax side effects in male
Reported by a physician from Japan on 2012-08-21
Patient: male
Reactions: Neutropenia
Drug(s) suspected as cause:
Zovirax
Dosage: 10mgk three times per day
Indication: Herpes Simplex
Zovirax
Dosage: 10mgk three times per day
Other drugs received by patient: Valtrex; Acyclovir
Possible Zovirax side effects in
Reported by a pharmacist from Japan on 2012-08-15
Patient:
Reactions: Pancreatitis
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Zovirax
Other drugs received by patient: Unknown Drug
Possible Zovirax side effects in female
Reported by a physician from Netherlands on 2012-08-15
Patient: female, weighing 70.0 kg (154.0 pounds)
Reactions: Renal Failure
Drug(s) suspected as cause:
Zovirax
Other drugs received by patient: Acetylsalicylzuur; Enoxaparin Sodium; Nexium; Keppra; Diprivan
Possible Zovirax side effects in
Reported by a physician from Japan on 2012-08-15
Patient:
Reactions: Corneal Perforation
Drug(s) suspected as cause:
Zovirax
Other drugs received by patient: Steroid
Possible Zovirax side effects in 3 year old female
Reported by a physician from France on 2012-08-14
Patient: 3 year old female, weighing 13.0 kg (28.6 pounds)
Reactions: Emotional Distress, Agitation, Hallucination
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Zovirax
Other drugs received by patient: Claforan; Acetaminophen; Ibuprofen; Clobazam
Possible Zovirax side effects in 60 year old female
Reported by a consumer/non-health professional from United States on 2012-08-13
Patient: 60 year old female
Reactions: Renal Failure, Drug Effect Decreased, Herpes Simplex
Drug(s) suspected as cause:
Zovirax
Other drugs received by patient: Singulair; Levoxyl
Possible Zovirax side effects in
Reported by a physician from Japan on 2012-08-13
Patient:
Reactions: Corneal Perforation
Drug(s) suspected as cause:
Zovirax
Possible Zovirax side effects in female
Reported by a physician from Japan on 2012-08-13
Patient: female, weighing 52.0 kg (114.4 pounds)
Reactions: Blood Urea Increased, Blood Potassium Increased, Dysarthria, Communication Disorder, Blood Uric Acid Increased, Nervous System Disorder, Asthenia, Blood Creatinine Increased, Renal Failure Acute
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Valtrex
Dosage: 3000mg per day
Administration route: Oral
Indication: Herpes Zoster
Start date: 2012-07-17
End date: 2012-07-23
Zovirax
Dosage: 250mg per day
Indication: Herpes Zoster
Start date: 2012-07-17
End date: 2012-07-21
Other drugs received by patient: Atelec; Pravastatin Sodium; Losartan Potassium and Hydrochlorothiazide
Possible Zovirax side effects in 65 year old female
Reported by a physician from Italy on 2012-08-13
Patient: 65 year old female
Reactions: Rash Maculo-Papular
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Piperacillin / Tazobactam
Dosage: 13.5 mg, 1x/day
Indication: Pyrexia
Start date: 2012-04-09
End date: 2012-04-26
Vancomycin
Dosage: 2 g, 1x/day
Indication: Pyrexia
Start date: 2012-04-12
End date: 2012-05-01
Zovirax
Dosage: 1.8 g, 1x/day
Indication: Prophylaxis
Start date: 2012-04-11
End date: 2012-05-02
Possible Zovirax side effects in
Reported by a physician from Japan on 2012-08-13
Patient:
Reactions: Corneal Perforation
Drug(s) suspected as cause:
Zovirax
Other drugs received by patient: Steroid
Possible Zovirax side effects in female
Reported by a physician from Netherlands on 2012-08-10
Patient: female, weighing 70.0 kg (154.0 pounds)
Reactions: Renal Failure
Drug(s) suspected as cause:
Zovirax
Other drugs received by patient: Diprivan; Acetylsalicylzuur; Keppra; Enoxaparin Sodium; Nexium
Possible Zovirax side effects in 67 year old female
Reported by a physician from France on 2012-08-09
Patient: 67 year old female
Reactions: Acute Pulmonary Oedema, Renal Failure
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Vancomycin
Indication: Urinary Tract Infection
Start date: 2012-06-06
End date: 2012-06-24
Zovirax
Dosage: 350mg per day
Indication: Simplex Virus Test Positive
Start date: 2012-06-09
Other drugs received by patient: Dasatinib; Tazobactam; Dexamethasone; Imatinib Mesylate; Zofran; Spasfon; Vincristine; Primperan TAB
Possible Zovirax side effects in 63 year old female
Reported by a health professional (non-physician/pharmacist) from Hong Kong on 2012-08-08
Patient: 63 year old female
Reactions: Haemoglobin Decreased, Blood Pressure Increased, Toxic Encephalopathy, Mental Status Changes, Stupor
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Acyclovir
Dosage: 400 mg / four times per day / oral
Administration route: Oral
Indication: Herpes Zoster
Zovirax
Dosage: fve times per day / topical
Administration route: Topical
Indication: Herpes Zoster
Other drugs received by patient: Metoprolol Tartrate; Alfacalcidol; Diltiazem HCL; Epogen; Aspirin; Calcium Carbonate
Possible Zovirax side effects in female
Reported by a physician from Italy on 2012-08-03
Patient: female
Reactions: Abdominal Pain, Vomiting, Subileus
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Zovirax
Other drugs received by patient: Norvasc; Onco-Carbide; Plavix; Citalopram Hydrobromide; Torsemide; Montegen; Riopan; Fluticasone Propionate / Salmeterol
Possible Zovirax side effects in female
Reported by a physician from France on 2012-08-02
Patient: female
Reactions: Renal Failure Acute
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Amoxicillin Trihydrate
Dosage: 3g four times per day
Indication: Pneumonia Klebsiella
Start date: 2012-02-10
End date: 2012-02-20
Zovirax
Dosage: 600mg three times per day
Indication: Encephalitis
Start date: 2012-02-10
End date: 2012-02-20
Other drugs received by patient: Claforan; Flagyl; Insuline
Possible Zovirax side effects in
Reported by a physician from Japan on 2012-07-31
Patient:
Reactions: Corneal Disorder
Drug(s) suspected as cause:
Zovirax
Possible Zovirax side effects in female
Reported by a physician from Japan on 2012-07-31
Patient: female
Reactions: Dysarthria, Renal Failure Acute
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Valtrex
Dosage: 3000mg per day
Administration route: Oral
Indication: Herpes Zoster
Start date: 2012-07-17
End date: 2012-07-23
Zovirax
Dosage: 250mg per day
Indication: Herpes Zoster
Start date: 2012-07-17
End date: 2012-07-21
Other drugs received by patient: Losartan Potassium and Hydrochlorothiazide; Atelec; Pravastatin Sodium
Possible Zovirax side effects in 66 year old male
Reported by a physician from Japan on 2012-07-20
Patient: 66 year old male
Reactions: Pneumonia, Interstitial Lung Disease
Adverse event resulted in: life threatening event, hospitalization
Drug(s) suspected as cause:
Adriamycin PFS
Dosage: 40 mg/m2, unk
Start date: 2010-12-22
End date: 2010-12-22
Adriamycin PFS
Dosage: 30 mg/m2, unk
Start date: 2010-10-14
End date: 2010-10-14
Adriamycin PFS
Dosage: 30 mg/m2, unk
Start date: 2010-11-24
End date: 2010-11-24
Adriamycin PFS
Dosage: 30 mg/m2, unk
Start date: 2010-12-29
End date: 2010-12-29
Adriamycin PFS
Dosage: 40 mg/m2, unk
Start date: 2010-11-16
End date: 2010-11-16
Adriamycin PFS
Dosage: 40 mg/m2, unk
Indication: Adult T-Cell Lymphoma / Leukaemia
Start date: 2010-10-07
End date: 2010-10-07
Allopurinol
Dosage: 100 mg, 3x/day
Administration route: Oral
Start date: 2011-07-05
End date: 2011-07-19
Allopurinol
Dosage: 100 mg, 1x/day
Administration route: Oral
Indication: Hyperuricaemia
End date: 2011-01-20
Amlodipine
Dosage: 5 mg, 1x/day
Administration route: Oral
Indication: Hypertension
Start date: 2010-10-08
End date: 2011-02-17
Baraclude
Dosage: 0.5 mg, 1/2day
Administration route: Oral
Indication: Hepatitis B
Start date: 2010-06-29
End date: 2011-07-19
Carboplatin
Dosage: 250 mg/m2, unk
Indication: Adult T-Cell Lymphoma / Leukaemia
Start date: 2010-10-26
End date: 2010-12-08
Cefazolin Sodium
Dosage: unk
Administration route: Oral
Indication: Proctitis
Start date: 2010-10-22
End date: 2011-02-17
Cyclophosphamide
Dosage: 350 mg/m2, unk
Indication: Adult T-Cell Lymphoma / Leukaemia
Start date: 2010-10-07
End date: 2010-12-22
Cymerin
Dosage: 60 mg/m2, unk
Indication: Adult T-Cell Lymphoma / Leukaemia
Start date: 2010-10-14
End date: 2010-12-29
Cytarabine
Dosage: 40 mg, daily
Indication: Adult T-Cell Lymphoma / Leukaemia
Start date: 2010-11-18
End date: 2010-11-18
Diflucan
Dosage: 100 mg, 1x/day
Administration route: Oral
Indication: Antifungal Prophylaxis
End date: 2011-01-11
Diflucan
Dosage: unk
Start date: 2011-01-19
End date: 2011-01-28
Etoposide
Dosage: 100 mg/m2, 3x/day
Indication: Adult T-Cell Lymphoma / Leukaemia
Start date: 2010-10-26
End date: 2010-12-08
Fentanyl
Dosage: unk
Indication: Stomatitis
Start date: 2011-01-02
End date: 2011-01-19
Fildesin
Dosage: 2.4 mg/m2, unk
Indication: Adult T-Cell Lymphoma / Leukaemia
Start date: 2010-10-26
End date: 2010-12-08
KW-0761
Dosage: 1 mg/kg, unk
Indication: Adult T-Cell Lymphoma / Leukaemia
Start date: 2010-10-08
End date: 2010-12-21
Lansoprazole
Dosage: 15 mg, 1x/day
Administration route: Oral
Start date: 2011-05-26
End date: 2011-07-19
Lansoprazole
Dosage: 15 mg, 1x/day
Administration route: Oral
Indication: Gastrooesophageal Reflux Disease
End date: 2011-02-17
Lipidil
Dosage: 100 df, 1x/day
Administration route: Oral
Indication: Hyperlipidaemia
End date: 2011-01-26
Lyrica
Dosage: 75 mg, 1x/day
Administration route: Oral
Indication: Pain
Start date: 2011-06-29
End date: 2011-07-19
Magmitt
Dosage: unk
Administration route: Oral
Indication: Constipation
Start date: 2011-01-07
End date: 2011-01-10
Meropenem
Dosage: 0.5 g, 2x/day
Indication: Pneumonia
Start date: 2011-01-07
End date: 2011-01-24
Meropenem
Dosage: 1 g, 3x/day
Start date: 2011-07-04
End date: 2011-07-15
Methotrexate Sodium
Dosage: 15 mg, daily
Indication: Adult T-Cell Lymphoma / Leukaemia
Start date: 2010-11-18
End date: 2010-11-18
Oncovin
Dosage: 1 mg/m2, unk
Indication: Adult T-Cell Lymphoma / Leukaemia
Start date: 2010-10-07
End date: 2010-12-22
Pantosin
Dosage: unk
Administration route: Oral
Indication: Constipation
Start date: 2011-01-07
End date: 2011-01-10
Prednisolone
Dosage: 40 mg/m2, unk
Administration route: Oral
Indication: Adult T-Cell Lymphoma / Leukaemia
Start date: 2010-10-07
End date: 2010-12-29
Prednisolone
Dosage: 10 mg, daily
Indication: Adult T-Cell Lymphoma / Leukaemia
Start date: 2010-11-18
End date: 2010-11-18
Sulfamethoxazole and Trimethoprim
Dosage: 1 df, 1x/day
Administration route: Oral
Start date: 2011-07-15
Sulfamethoxazole and Trimethoprim
Dosage: 1 df, 1x/day
Administration route: Oral
Indication: Antifungal Prophylaxis
End date: 2011-01-28
Vancomycin
Dosage: 0.5 g, 2x/day
Start date: 2011-01-07
End date: 2011-01-17
Zovirax
Dosage: unk
Start date: 2011-06-30
End date: 2011-07-08
Zovirax
Dosage: 200 mg, 1x/day
Administration route: Oral
Indication: Prophylaxis
End date: 2011-01-28
Zovirax
Dosage: 200 mg, 1x/day
Administration route: Oral
Start date: 2011-07-12
End date: 2011-07-19
Other drugs received by patient: Vfend; Targocid; Slow-K; Ciprofloxacin HCL
Possible Zovirax side effects in female
Reported by a physician from Japan on 2012-07-18
Patient: female, weighing 44.0 kg (96.8 pounds)
Reactions: White Blood Cell Count Decreased, Granulocyte Count Decreased, General Physical Condition Abnormal, Lymphocyte Count Decreased, Herpes Zoster
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Acyclovir
Dosage: unk ukn, unk
Administration route: Oral
Start date: 2012-06-29
Gilenya
Dosage: 0.5 mg, daily
Administration route: Oral
Start date: 2012-01-17
End date: 2012-07-02
Zovirax
Administration route: Oral
Other drugs received by patient: Methylprednisolone Sodium Succinate; Imuran
Possible Zovirax side effects in
Reported by a pharmacist from Japan on 2012-07-17
Patient:
Reactions: Cardiac Failure Congestive
Drug(s) suspected as cause:
Zovirax
Possible Zovirax side effects in 78 year old female
Reported by a physician from Japan on 2012-07-17
Patient: 78 year old female
Reactions: Drug Clearance Decreased, Renal Disorder, Dialysis, Drug Level Increased, Restlessness, Encephalopathy
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Zovirax
Other drugs received by patient: Aspirin; Rocephin; Ampicillin; Statins; Loxonin; Lyrica; Vancomycin
Possible Zovirax side effects in male
Reported by a physician from France on 2012-07-11
Patient: male
Reactions: Renal Failure, Condition Aggravated
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Amoxicillin
Indication: Product Used FOR Unknown Indication
Start date: 2011-07-13
End date: 2011-07-18
Zovirax
Indication: Product Used FOR Unknown Indication
Start date: 2011-07-13
End date: 2011-07-18
Possible Zovirax side effects in 86 year old female
Reported by a physician from Japan on 2012-07-11
Patient: 86 year old female
Reactions: Blood Urea Increased, Somnolence, Blood Creatinine Increased, Renal Failure Acute
Drug(s) suspected as cause:
Zovirax
Other drugs received by patient: Unknown Drug
Possible Zovirax side effects in 65 year old female
Reported by a physician from Italy on 2012-07-11
Patient: 65 year old female
Reactions: Rash Maculo-Papular
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Piperacillin and Tazobactam
Dosage: 13.5 mg, 1x/day
Indication: Pyrexia
Start date: 2012-04-09
End date: 2012-04-26
Vancomycin
Dosage: 2 g, 1x/day
Indication: Pyrexia
Start date: 2012-04-12
End date: 2012-05-01
Zovirax
Dosage: 1.8 g, 1x/day
Indication: Prophylaxis
Start date: 2012-04-11
End date: 2012-05-02
Possible Zovirax side effects in 65 year old female
Reported by a health professional (non-physician/pharmacist) from Italy on 2012-07-10
Patient: 65 year old female
Reactions: Rash Maculo-Papular
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Piperacillin and Tazobactam
Dosage: 13.5 gram, intravenous
Indication: Pyrexia
Start date: 2012-04-09
End date: 2012-04-26
Vancomycin Hydrochloride
Dosage: 2 gram, intravenous
Indication: Pyrexia
Start date: 2012-04-12
End date: 2012-05-01
Zovirax
Dosage: 1.8 gram, intravenous
Indication: Antibiotic Prophylaxis
Start date: 2012-04-11
End date: 2012-05-02
Possible Zovirax side effects in male
Reported by a physician from France on 2012-06-25
Patient: male
Reactions: Renal Failure Acute
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Zovirax
Other drugs received by patient: Zopiclone; Tobrex; Venlafaxine HCL; Acetaminophen; Zovirax; Trimeprazine Tartrate; Celluvisc; Fucidine CAP; Neuleptil
Possible Zovirax side effects in 58 year old male
Reported by a physician from France on 2012-06-18
Patient: 58 year old male
Reactions: Anxiety, Irritability, Confusional State, Disorientation, Cognitive Disorder
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Valacyclovir Hydrochloride
Administration route: Oral
Indication: Herpes Virus Infection
Zovirax
Indication: Herpes Virus Infection
Possible Zovirax side effects in 17 year old female
Reported by a physician from Japan on 2012-06-18
Patient: 17 year old female
Reactions: Electroencephalogram Abnormal, Mental Impairment, Communication Disorder, Dyskinesia, Maternal Exposure During Pregnancy, Encephalitis Autoimmune, Abortion Induced
Drug(s) suspected as cause:
Zovirax
Other drugs received by patient: Methylprednisolone; Human Normal Immunoglobulin
Possible Zovirax side effects in 29 year old female
Reported by a physician from Japan on 2012-06-18
Patient: 29 year old female
Reactions: Nystagmus, Nausea, Anorectal Disorder, Illusion, Neuromyelitis Optica, Multiple Sclerosis, Acute Disseminated Encephalomyelitis, Dyslalia
Drug(s) suspected as cause:
Zovirax
Other drugs received by patient: Ceftriaxone Sodium; Unknown Nsaid; Vancomycin Hydrochloride
Possible Zovirax side effects in 51 year old male
Reported by a pharmacist from Canada on 2012-06-15
Patient: 51 year old male
Reactions: Neutropenia
Drug(s) suspected as cause:
Zovirax
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