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This is an index of adverse event reports related to Klonopin (Clonazepam). Click on the relevant link below to view a selection of reports according to the event's seriousness level and/or the nature of the adverse reaction. Or scroll down to view a sample of recent reports further on this page.
Our database includes reports from Jan 2007 to Dec 2007. The information is not vetted and should not be cosidered as verified clinical evidence.
All cases (83)
Cases resulting in a serious event (78)
Cases resulting in death (18)
Cases resulting in life threatening events (7)
Cases resulting in hospitalization (18)
Cases resulting in disability (6)
Cases resulting in other serious reactions (47)
Below is a sample of adverse event reports reports related to Klonopin (Clonazepam). For a complete list and/or a specific selection of reports, please use the links in the index above.
Adverse event in male receiving Klonopin (Clonazepam)
Reported by a health professional (non-physician/pharmacist) from United States on 2007-10-24
Patient: male, weighing 64.7 kg (142.3 pounds)
Adverse reactions / side effects: Metabolic Acidosis, Nausea, Hypotension, Tachycardia, Renal Impairment, Diarrhoea, Intestinal Infarction, Leukopenia
Adverse event resulted in: death
Suspect drug(s):
Coumadin
Dosage: 2.5 mg daily oral
Administration route: Oral
Morphine
Dosage: 1 tsp q 2-4 hrns prn oral
Administration route: Oral
Indication: Pain
Duragesic-25
Dosage: 25 mcg q three days derm
Indication: Pain
Iressa
Dosage: 250 mg daily oral
Administration route: Oral
Start date: 2007-09-17
End date: 2007-10-18
Cozaar
Dosage: 50 mg daily oral
Administration route: Oral
Indication: Hypertension
Viagra
Dosage: 50 mg prn oral
Administration route: Oral
Compazine
Dosage: 10 mg prn oral
Administration route: Oral
Indication: Nausea
Klonopin
Dosage: 1 mg prn oral
Administration route: Oral
Indication: Somnolence
Adverse event in female receiving Klonopin (Clonazepam)
Reported by a consumer/non-health professional from United States on 2007-10-23
Patient: female, weighing 83.0 kg (182.6 pounds)
Adverse reactions / side effects: Anxiety, Dysarthria, Insomnia, Somnolence, Transient Ischaemic Attack
Suspect drug(s):
Chantix
Indication: Smoking Cessation Therapy
Klonopin
Indication: Bipolar Disorder
Other drugs received by patient: Lipitor; Tricor; Lamictal; Remeron; Glucophage; Geodon
Adverse event in 83 year old male receiving Klonopin (Clonazepam)
Reported by a physician from United States on 2007-10-19
Patient: 83 year old male, weighing 72.7 kg (160.0 pounds)
Adverse reactions / side effects: Activities of Daily Living Impaired, Cerebrovascular Accident, Lethargy
Adverse event resulted in: death, life threatening event
Suspect drug(s):
Lyrica
Indication: Pain in Extremity
Start date: 2007-08-14
End date: 2007-08-24
Lyrica
Indication: Neuropathy
Klonopin
Adverse event in 51 year old male receiving Klonopin (Clonazepam)
Reported by a consumer/non-health professional from United States on 2007-10-15
Patient: 51 year old male, weighing 80.3 kg (176.6 pounds)
Adverse reactions / side effects: Insomnia
Suspect drug(s):
Lunesta
Dosage: 2 mg;prn;oral 3 mg;prn;oral
Administration route: Oral
Indication: Insomnia
Start date: 2007-01-01
End date: 2007-01-01
Lunesta
Dosage: 2 mg;prn;oral 3 mg;prn;oral
Administration route: Oral
Indication: Insomnia
Start date: 2007-01-01
Klonopin
End date: 2007-09-09
Other drugs received by patient: Klonopin; Effexor; Buspar; Methotrexate; Sulfasalazine
Adverse event in 59 year old male receiving Klonopin (Clonazepam)
Reported by a consumer/non-health professional from United States on 2007-10-15
Patient: 59 year old male, weighing 72.6 kg (159.7 pounds)
Adverse reactions / side effects: Middle Insomnia, Drug Ineffective, Parasomnia
Suspect drug(s):
Lunesta
Dosage: 3 mg; hs; oral
Administration route: Oral
Indication: Insomnia
Start date: 2007-08-30
Klonopin
Dosage: 10 mg; hs; oral, 1 mg; hs; oral, 0.5 mg; 1x; oral
Administration route: Oral
Indication: Insomnia
End date: 2007-08-29
Klonopin
Dosage: 10 mg; hs; oral, 1 mg; hs; oral, 0.5 mg; 1x; oral
Administration route: Oral
Indication: Insomnia
Start date: 2007-08-30
End date: 2007-09-01
Klonopin
Dosage: 10 mg; hs; oral, 1 mg; hs; oral, 0.5 mg; 1x; oral
Administration route: Oral
Indication: Insomnia
Start date: 2007-09-03
End date: 2007-09-03
Other drugs received by patient: Lotensin; Atorvastatin Calcium
Adverse event in 49 year old female receiving Klonopin (Clonazepam)
Reported by a individual with unspecified qualification from United States on 2007-10-10
Patient: 49 year old female, weighing 55.3 kg (121.7 pounds)
Adverse reactions / side effects: Nervous System Disorder, Unevaluable Event, Drug Withdrawal Syndrome, Ill-Defined Disorder, Amnesia
Adverse event resulted in: life threatening event
Suspect drug(s):
Klonopin (Clonazepam)
Adverse event in female receiving Klonopin (Clonazepam)
Reported by a physician from United States on 2007-10-08
Patient: female, weighing 99.8 kg (219.6 pounds)
Adverse reactions / side effects: Asthma, Panic Attack, Pneumonia, Convulsion
Suspect drug(s):
Zoloft
Administration route: Oral
Indication: Post-Traumatic Stress Disorder
Zoloft
Indication: Panic Attack
Zoloft
Indication: Agoraphobia
Gabitril
Administration route: Oral
Indication: Sleep Disorder
Start date: 2006-08-16
End date: 2006-12-04
Gabitril
Indication: Panic Attack
Gabitril
Indication: Agoraphobia
Gabitril
Indication: Post-Traumatic Stress Disorder
Gabitril
Indication: Anxiety
Cymbalta
Administration route: Oral
Indication: Neuralgia
Start date: 2006-01-01
Klonopin
Indication: Post-Traumatic Stress Disorder
Klonopin
Indication: Panic Attack
Klonopin
Indication: Agoraphobia
Other drugs received by patient: Lipitor; Diltiazem; Ambien; Neurontin
Adverse event in female receiving Klonopin (Clonazepam)
Reported by a individual with unspecified qualification from United States on 2007-10-05
Patient: female, weighing 59.9 kg (131.7 pounds)
Adverse reactions / side effects: Pharmaceutical Product Complaint, Drug Dependence
Adverse event resulted in: disablity
Suspect drug(s):
Xanax
Indication: Stress
Start date: 1993-01-01
End date: 2007-01-01
Klonopin
Indication: Anxiety
Start date: 1993-01-01
End date: 2007-01-01
Ativan
Indication: Anxiety
Start date: 1993-01-01
End date: 2007-01-01
Adverse event in female receiving Klonopin (Clonazepam)
Reported by a physician from United States on 2007-10-01
Patient: female
Adverse reactions / side effects: Convulsion
Suspect drug(s):
Suboxone
Start date: 2006-09-13
Cocaine
Dosage: amount and last use unknown
Indication: Drug USE FOR Unknown Indication
Marijuana
Dosage: amount and last use unknown
Indication: Drug USE FOR Unknown Indication
Klonopin
Dosage: dosage unknown
Administration route: Oral
Indication: Drug USE FOR Unknown Indication
End date: 2007-07-01
Alcohol
Dosage: amount of alcohol consumed unknown
Administration route: Oral
Indication: Drug USE FOR Unknown Indication
Adverse event in 45 year old female receiving Klonopin (Clonazepam)
Reported by a pharmacist from United States on 2007-07-31
Patient: 45 year old female
Adverse reactions / side effects: Dupuytren's Contracture
Suspect drug(s):
Klonopin (Clonazepam)
Adverse event in 49 year old female receiving Klonopin (Clonazepam)
Reported by a individual with unspecified qualification from United States on 2007-07-27
Patient: 49 year old female, weighing 55.8 kg (122.7 pounds)
Adverse reactions / side effects: Myoclonus, Respiratory Disorder, Drug Withdrawal Syndrome, Drug Dependence
Suspect drug(s):
Klonopin (Clonazepam)
Adverse event in male receiving Klonopin (Clonazepam)
Reported by a consumer/non-health professional from United States on 2007-07-27
Patient: male, weighing 98.9 kg (217.6 pounds)
Adverse reactions / side effects: Glossodynia, Disorientation, Joint Injury, Loss of Consciousness, Mental Impairment, Incoherent, Malaise, Diarrhoea, Feeling Abnormal
Adverse event resulted in: hospitalization
Suspect drug(s):
Xanax
Indication: Panic Disorder
Klonopin
Indication: Panic Disorder
Start date: 2007-07-14
End date: 2007-07-14
Other drugs received by patient: Lexapro
Adverse event in 80 year old female receiving Klonopin (Clonazepam)
Reported by a consumer/non-health professional from United States on 2007-07-24
Patient: 80 year old female
Adverse reactions / side effects: Hostility, Death, Disturbance in Social Behaviour
Adverse event resulted in: death
Suspect drug(s):
Klonopin (Clonazepam)
Adverse event in 94 year old female receiving Klonopin (Clonazepam)
Reported by a consumer/non-health professional from United States on 2007-07-19
Patient: 94 year old female, weighing 41.0 kg (90.2 pounds)
Adverse reactions / side effects: Respiratory Rate Decreased
Suspect drug(s):
Remeron
Dosage: 15 mg daily
Indication: Insomnia
Start date: 2007-06-01
Klonopin
Start date: 2007-06-01
Other drugs received by patient: Toprol-XL; Lasix; Cardizem; Aspirin; Digoxin
Adverse event in 94 year old female receiving Klonopin (Clonazepam)
Reported by a consumer/non-health professional from United States on 2007-07-10
Patient: 94 year old female, weighing 41.0 kg (90.2 pounds)
Adverse reactions / side effects: Respiratory Rate Decreased
Suspect drug(s):
Remeron
Dosage: 15 mg daily
Indication: Sleep Disorder
Start date: 2007-06-01
Klonopin
Start date: 2007-06-01
Other drugs received by patient: Toprol-XL; Lasix; Cardizem; Aspirin; Digoxin
Adverse event in 48 year old female receiving Klonopin (Clonazepam)
Reported by a health professional (non-physician/pharmacist) from United States on 2007-07-10
Patient: 48 year old female
Adverse reactions / side effects: Drug Ineffective, Adverse Drug Reaction, Drug Intolerance, Dizziness, Fall, Brain Neoplasm
Suspect drug(s):
Valium
Indication: Drug USE FOR Unknown Indication
Start date: 1995-01-01
Klonopin
Indication: Drug USE FOR Unknown Indication
Diazepam
Indication: Drug USE FOR Unknown Indication
Lexapro
Indication: Drug USE FOR Unknown Indication
Cymbalta
Indication: Drug USE FOR Unknown Indication
Geodon
Indication: Drug USE FOR Unknown Indication
Ativan
Indication: Drug USE FOR Unknown Indication
Xanax
Indication: Drug USE FOR Unknown Indication
Zoloft
Indication: Drug USE FOR Unknown Indication
Zonisamide
Indication: Migraine
Zonisamide
Dosage: dose adjusted
Other drugs received by patient: Lipitor; Prozac; Unspecified Drug; Lopressor
Adverse event in 54 year old male receiving Klonopin (Clonazepam)
Reported by a consumer/non-health professional from United States on 2007-07-06
Patient: 54 year old male, weighing 61.2 kg (134.6 pounds)
Adverse reactions / side effects: White Blood Cell Count Decreased, Epileptic Aura, Localised Infection, Vomiting, Nausea, Incorrect Dose Administered, Tremor, Anxiety, Haemoglobin Decreased, Panic Attack, Diarrhoea, Alopecia, Dizziness
Suspect drug(s):
Pegasys
Start date: 2006-11-13
Copegus
Administration route: Oral
Start date: 2006-11-13
End date: 2007-06-25
Klonopin
Administration route: Oral
Start date: 2007-03-05
Adverse event in 30 year old female receiving Klonopin (Clonazepam)
Reported by a consumer/non-health professional from United States on 2007-06-29
Patient: 30 year old female
Adverse reactions / side effects: Multiple Drug Overdose Intentional
Adverse event resulted in: life threatening event
Suspect drug(s):
Seroquel
Dosage: whole bottle
Klonopin
Dosage: whole bottle
Acetaminophen
Dosage: 1/2 bottle 500 mg
Alcohol
Adverse event in 36 year old male receiving Klonopin (Clonazepam)
Reported by a consumer/non-health professional from United States on 2007-06-28
Patient: 36 year old male
Adverse reactions / side effects: Weight Increased, Weight Loss Poor, Thyroid Disorder, Blood Cholesterol Increased, Diabetes Mellitus non-Insulin-Dependent, Hypertension
Suspect drug(s):
Klonopin
Dosage: taken at night
Indication: Anxiety
Start date: 1995-01-01
Zoloft
Indication: Drug USE FOR Unknown Indication
Start date: 1995-01-01
Zoloft
Dosage: dose decreased
Adverse event in 46 year old female receiving Klonopin (Clonazepam)
Reported by a consumer/non-health professional from United States on 2007-06-28
Patient: 46 year old female, weighing 56.7 kg (124.7 pounds)
Adverse reactions / side effects: Psychotic Disorder, Intentional Overdose
Suspect drug(s):
Seroquel
Dosage: 3 tablets
Administration route: Oral
Indication: Insomnia
Seroquel
Dosage: 3 tablets
Administration route: Oral
Indication: Nervousness
Klonopin
Dosage: 12 tablets
Other drugs received by patient: Effexor
Adverse event in 54 year old male receiving Klonopin (Clonazepam)
Reported by a consumer/non-health professional from United States on 2007-06-28
Patient: 54 year old male
Adverse reactions / side effects: Drug Ineffective, Chest Pain, Thrombosis Mesenteric Vessel, Tremor
Suspect drug(s):
Klonopin
Dosage: the patient was prescribed klonopin 'around 1997.' at the time of the report, he had been 'off klon+
End date: 2007-03-21
Klonopin
End date: 2007-03-01
Unspecified Drug
Dosage: drug reported as 'generic clonazepam.' additional indication reported as 'shaking.'
Unspecified Drug
Dosage: drug reported as 'generic clonazepam.' additional indication reported as 'shaking.'
Unspecified Drug
Dosage: drug reported as 'generic clonazepam.' additional indication reported as 'shaking.'
Adverse event in receiving Klonopin (Clonazepam)
Reported by a individual with unspecified qualification from United States on 2007-06-26
Patient:
Adverse reactions / side effects: Convulsion
Adverse event resulted in: hospitalization
Suspect drug(s):
Klonopin (Clonazepam)
Adverse event in 35 year old female receiving Klonopin (Clonazepam)
Reported by a health professional (non-physician/pharmacist) from United States on 2007-06-26
Patient: 35 year old female
Adverse reactions / side effects: Drug Dependence
Adverse event resulted in: hospitalization
Suspect drug(s):
Klonopin (Clonazepam)
Other drugs received by patient: Seroquel; Ambien
Adverse event in 51 year old female receiving Klonopin (Clonazepam)
Reported by a physician on 2007-06-22
Patient: 51 year old female
Adverse reactions / side effects: Death
Adverse event resulted in: death
Suspect drug(s):
Lyrica
Methadone HCL
Dosage: daily dose:25mg
Klonopin
Adverse event in 63 year old male receiving Klonopin (Clonazepam)
Reported by a individual with unspecified qualification from United States on 2007-06-20
Patient: 63 year old male, weighing 80.7 kg (177.6 pounds)
Adverse reactions / side effects: Tinnitus, Dyspnoea, Blepharospasm, Adverse Drug Reaction, Muscle Contracture, Inner Ear Disorder
Suspect drug(s):
Klonopin (Clonazepam)
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