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Chlorzoxazone (Chlorzoxazone) - Side Effect Reports to FDA

 
 



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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