This is an index of side effect / adverse reaction reports (a.k.a. adverse event reports) related to Chlorzoxazone 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 (19)
Death (12)
Life Threatening Events (2)
Reports by Reaction Type
Completed Suicide (12),
Poisoning (2),
Toxicity To Various Agents (2),
Hepatic Enzyme Increased (2),
Feeling Abnormal (2),
Confusional State (1),
Drug Ineffective (1),
Pain (1),
Somnolence (1),
Abdominal Pain Upper (1),
Liver Transplant (1),
Death (1)
Possible Chlorzoxazone side effects in female
Reported by a health professional (non-physician/pharmacist) from China on 2012-08-17
Patient: female, weighing 45.0 kg (99.0 pounds)
Reactions: Erythema Multiforme
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Meloxicam
Indication: Infection
Meloxicam
Dosage: 7.5 mg
Administration route: Oral
Indication: Pain
Start date: 2011-08-17
End date: 2011-08-20
Chlorzoxazone
Administration route: Oral
Indication: Fasciitis
Start date: 2011-08-17
End date: 2011-08-20
Possible Chlorzoxazone side effects in female
Reported by a physician from United States on 2012-06-28
Patient: female
Reactions: Confusional State, Fatigue, Drug Ineffective, Feeling Abnormal
Drug(s) suspected as cause:
Chlorzoxazone
Other drugs received by patient: Lyrica; AN Unknown Medication; Lidoderm; Unknown Medication; Simvastatin; Singulair; Zolpidem Tartrate; Prozac; Klonopin
Possible Chlorzoxazone side effects in
Reported by a physician from United States on 2012-05-23
Patient:
Reactions: Drug Hypersensitivity
Drug(s) suspected as cause:
Effexor
Dosage: unk
Chlorzoxazone
Dosage: unk
Wellbutrin
Dosage: unk
Possible Chlorzoxazone side effects in 39 year old female
Reported by a health professional (non-physician/pharmacist) from United States on 2012-04-05
Patient: 39 year old female
Reactions: Completed Suicide
Adverse event resulted in: death
Drug(s) suspected as cause:
Chlorzoxazone
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Tramadol HCL
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Iron
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Benzonatate
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Hydrocodone Bitartrate and Acetaminophen
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Omeprazole
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Vitamin D
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Fluoxetine
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Gabapentin
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Ethanol
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Possible Chlorzoxazone side effects in 39 year old female
Reported by a health professional (non-physician/pharmacist) from United States on 2012-03-02
Patient: 39 year old female
Reactions: Completed Suicide
Adverse event resulted in: death
Drug(s) suspected as cause:
Benzonatate
Dosage: unk,unk
Administration route: Oral
Gabapentin
Dosage: unk,unk
Administration route: Oral
Omeprazole
Dosage: unk,unk
Administration route: Oral
Tramadol HCL
Dosage: unk,unk
Administration route: Oral
Ferrous Sulfate TAB
Dosage: unk,unk
Administration route: Oral
Fluoxetine
Dosage: unk,unk
Administration route: Oral
Ethanol
Dosage: unk,unk
Administration route: Oral
Vitamin D
Dosage: unk,unk
Administration route: Oral
Acetaminophen and Hydrocodone Bitartrate
Dosage: unk,unk
Administration route: Oral
Chlorzoxazone
Dosage: unk,unk
Administration route: Oral
Possible Chlorzoxazone side effects in 61 year old female
Reported by a physician from United States on 2012-02-27
Patient: 61 year old female, weighing 72.8 kg (160.2 pounds)
Reactions: Encephalopathy, Acute Hepatic Failure, Gastroenteritis Viral, Liver Transplant, Abdominal Pain Upper
Adverse event resulted in: life threatening event
Drug(s) suspected as cause:
Chlorzoxazone
Dosage: 1 unit/day po
Administration route: Oral
Indication: Pain
End date: 2011-04-12
Chlorzoxazone
Dosage: 1 unit/day po
Administration route: Oral
Indication: Temporomandibular Joint Syndrome
End date: 2011-04-12
Other drugs received by patient: Levothyroxine Sodium
Possible Chlorzoxazone side effects in 39 year old female
Reported by a physician from United States on 2012-02-02
Patient: 39 year old female
Reactions: Completed Suicide
Adverse event resulted in: death
Drug(s) suspected as cause:
Tramadol HCL
Administration route: Oral
Omeprazole
Administration route: Oral
Vitamin D
Administration route: Oral
Ethanol
Administration route: Oral
Chlorzoxazone
Administration route: Oral
Hydrocodone Bitartrate and Acetaminophen
Administration route: Oral
Fluoxetine
Administration route: Oral
Benzonatate
Administration route: Oral
Iron
Administration route: Oral
Gabapentin
Administration route: Oral
Possible Chlorzoxazone side effects in female
Reported by a health professional (non-physician/pharmacist) from United States on 2012-01-31
Patient: female
Reactions: Refusal of Treatment by Patient, Vomiting, Viral Infection, Impaired Work Ability, Hyperhidrosis, Hepatic Enzyme Increased, Heart Rate Decreased, Blood Potassium Decreased, Dyspepsia, Chest Pain, Dizziness, Feeling Abnormal, Asthenia, White Blood Cell Count Increased
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Chlorzoxazone
Other drugs received by patient: Lidocaine; Morphine
Possible Chlorzoxazone side effects in 39 year old female
Reported by a physician from United States on 2012-01-26
Patient: 39 year old female
Reactions: Completed Suicide, Toxicity To Various Agents
Adverse event resulted in: death
Drug(s) suspected as cause:
Fluoxetine
Dosage: oral
Administration route: Oral
Ethanol (Ethanol)
Dosage: oral
Administration route: Oral
Gabapentin
Dosage: oral
Administration route: Oral
Chlorzoxazone
Dosage: oral
Administration route: Oral
Tramadol HCL
Dosage: oral
Administration route: Oral
Colecalciferol + Calcium Citrate (Colecalciferol + Calcium Citrate) TA
Dosage: oral
Administration route: Oral
Iron (Iron [iron[)
Dosage: oral
Administration route: Oral
Hydrocodone Bitartrate + Acetaminophen
Dosage: oral
Administration route: Oral
Benzonatate
Dosage: oral
Administration route: Oral
Omeprazole
Dosage: oral
Administration route: Oral
Possible Chlorzoxazone side effects in 39 year old female
Reported by a physician from United States on 2012-01-13
Patient: 39 year old female
Reactions: Completed Suicide
Adverse event resulted in: death
Drug(s) suspected as cause:
Iron
Dosage: unk
Benzonatate
Dosage: unk
Tramadol HCL
Dosage: unk
Fluoxetine Hydrochloride
Dosage: unk
Ethanol
Dosage: unk
Vitamin D
Dosage: unk
Chlorzoxazone
Dosage: unk
Hydrocodone Bitartrate and Acetaminophen
Dosage: unk
Omeprazole
Dosage: unk
Gabapentin
Dosage: unk
Possible Chlorzoxazone side effects in 39 year old female
Reported by a physician from United States on 2012-01-12
Patient: 39 year old female
Reactions: Completed Suicide, Poisoning
Adverse event resulted in: death
Drug(s) suspected as cause:
Acetaminophen and Hydrocodone Bitartrate
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Benzonatate
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Tramadol HCL
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Vitamin D
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Iron
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Gabapentin
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Ethanol
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Chlorzoxazone
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Fluoxetine
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Omeprazole
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Possible Chlorzoxazone side effects in 39 year old female
Reported by a physician from United States on 2012-01-12
Patient: 39 year old female
Reactions: Poisoning, Completed Suicide
Adverse event resulted in: death
Drug(s) suspected as cause:
Omeprazole
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Ethanol
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Gabapentin
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Chlorzoxazone
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Benzonatate
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Fluoxetine
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Vitamin D NOS (Not Specified)
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Iron
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Acetaminophen and Hydrocodone Bitartrate
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Tramadol HCL
Dosage: (df oral)
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Possible Chlorzoxazone side effects in 39 year old female
Reported by a physician from United States on 2012-01-11
Patient: 39 year old female
Reactions: Completed Suicide
Adverse event resulted in: death
Drug(s) suspected as cause:
Acetaminophen and Hydrocodone Bitartrate
Administration route: Oral
Ethanol
Administration route: Oral
Gabapentin
Administration route: Oral
Iron
Administration route: Oral
Chlorzoxazone
Administration route: Oral
Fluoxetine
Administration route: Oral
Omeprazole
Administration route: Oral
Benzonatate
Administration route: Oral
Vitamin D
Administration route: Oral
Tramadol HCL
Administration route: Oral
Possible Chlorzoxazone side effects in 39 year old female
Reported by a physician from United States on 2012-01-06
Patient: 39 year old female
Reactions: Completed Suicide
Adverse event resulted in: death
Drug(s) suspected as cause:
Iron
Dosage: ingestion
Indication: Product Used FOR Unknown Indication
Hydrocodone Bitartrate and Acetaminophen
Dosage: ingestion
Indication: Product Used FOR Unknown Indication
Ethanol
Dosage: ingestion
Indication: Product Used FOR Unknown Indication
Gabapentin
Dosage: ingestion
Indication: Product Used FOR Unknown Indication
Benzonatate
Dosage: ingestion
Indication: Product Used FOR Unknown Indication
Vitamin D
Dosage: ingestion
Indication: Product Used FOR Unknown Indication
Chlorzoxazone
Dosage: ingestion
Indication: Product Used FOR Unknown Indication
Fluoxetine
Dosage: ingestion
Indication: Product Used FOR Unknown Indication
Omeprazole
Dosage: ingestion
Indication: Product Used FOR Unknown Indication
Tramadol HCL
Dosage: ingestion
Indication: Product Used FOR Unknown Indication
Possible Chlorzoxazone side effects in 39 year old female
Reported by a physician from United States on 2011-12-30
Patient: 39 year old female
Reactions: Completed Suicide
Adverse event resulted in: death
Drug(s) suspected as cause:
Ethanol
Administration route: Oral
Fluoxetine
Administration route: Oral
Tramadol HCL
Administration route: Oral
Acetaminophen and Hydrocodone Bitartrate
Administration route: Oral
Chlorzoxazone
Administration route: Oral
Omeprazole
Administration route: Oral
Benzonatate
Administration route: Oral
Iron
Dosage: unk
Administration route: Oral
Vitamin D
Administration route: Oral
Gabapentin
Administration route: Oral
Possible Chlorzoxazone side effects in 39 year old female
Reported by a physician from United States on 2011-12-26
Patient: 39 year old female
Reactions: Death, Completed Suicide
Adverse event resulted in: death
Drug(s) suspected as cause:
Tramadol HCL
Dosage: unk, unknown
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Ethanol
Dosage: unk, unknown
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Fluoxetine
Dosage: unk, unknown
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Benzonatate
Dosage: unk, unknown
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Omeprazole
Dosage: unk, unknown
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Gabapentin
Dosage: unk, unknown
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Vitamin D
Dosage: unk, unknown
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Chlorzoxazone
Dosage: unk, unknown
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Iron
Dosage: unk, unknown
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Acetaminophen and Hydrocodone Bitartrate
Dosage: unk, unknown
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Possible Chlorzoxazone side effects in 39 year old female
Reported by a physician from United States on 2011-12-21
Patient: 39 year old female
Reactions: Completed Suicide, Toxicity To Various Agents
Adverse event resulted in: death
Drug(s) suspected as cause:
Tramadol HCL
Administration route: Oral
Iron
Administration route: Oral
Benzonatate
Administration route: Oral
Fluoxetine
Administration route: Oral
Chlorzoxazone
Administration route: Oral
Gabapentin
Administration route: Oral
Omeprazole
Administration route: Oral
Acetaminophen and Hydrocodone Bitartrate
Administration route: Oral
Ethanol
Administration route: Oral
Vitamin D
Administration route: Oral
Possible Chlorzoxazone side effects in 44 year old female
Reported by a health professional (non-physician/pharmacist) from United States on 2011-12-07
Patient: 44 year old female, weighing 72.6 kg (159.7 pounds)
Reactions: Pain, Chromaturia, Hepatic Enzyme Increased
Adverse event resulted in: life threatening event
Drug(s) suspected as cause:
Chlorzoxazone
Possible Chlorzoxazone side effects in female
Reported by a consumer/non-health professional from United States on 2011-12-01
Patient: female
Reactions: Somnolence, Drug Dependence
Drug(s) suspected as cause:
Chlorzoxazone
Dosage: 500 mg, every 6 hours
Alprazolam
Tylenol W / Codeine NO. 4
Dosage: 1 df, every 8 hours
Diapezam
Dosage: unk
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