PRAZOSIN

Prazosin Adverse Events Reported to the FDA Over Time

How are Prazosin adverse event reports trending over time?

This graph shows volume of adverse events submitted to the FDA by quarter for Prazosin, as well as related generic and/or brandname drugs containing the same primary active ingredients. Adverse events are counted if Prazosin is flagged as the suspect drug causing the adverse event.

Most Common Prazosin Adverse Events Reported to the FDA

What are the most common Prazosin adverse events reported to the FDA?

Dizziness	28 (1.88%)
Bradycardia	23 (1.54%)
Syncope	22 (1.47%)
Drug Interaction	21 (1.41%)
Orthostatic Hypotension	21 (1.41%)
Hypotension	20 (1.34%)
Shock	20 (1.34%)
Hyperkalaemia	19 (1.27%)
Completed Suicide	18 (1.21%)
Fall	18 (1.21%)
Dyspnoea	17 (1.14%)
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Renal Failure Acute	17 (1.14%)
Cardio-respiratory Arrest	16 (1.07%)
Neuroleptic Malignant Syndrome	15 (1.01%)
Headache	14 (.94%)
Blood Pressure Decreased	13 (.87%)
Disseminated Intravascular Coagulat...	13 (.87%)
Oedema Peripheral	12 (.8%)
Condition Aggravated	11 (.74%)
Bladder Cancer	10 (.67%)
Chest Pain	10 (.67%)
Hypertension	10 (.67%)
Hypoglycaemia	10 (.67%)
Hypoxia	10 (.67%)
Loss Of Consciousness	10 (.67%)
Melaena	10 (.67%)
Pyrexia	10 (.67%)
Blood Pressure Systolic Increased	9 (.6%)
Dialysis	9 (.6%)
Hepatitis	9 (.6%)
Malaise	9 (.6%)
Nervous System Disorder	9 (.6%)
Vomiting	9 (.6%)
Weight Decreased	9 (.6%)
Depressed Level Of Consciousness	8 (.54%)
Metabolic Acidosis	8 (.54%)
Quadriplegia	8 (.54%)
Respiratory Arrest	8 (.54%)
Asthenia	7 (.47%)
Blood Creatinine Increased	7 (.47%)
Blood Pressure Fluctuation	7 (.47%)
Blood Pressure Increased	7 (.47%)
Cardiac Arrest	7 (.47%)
Drug Hypersensitivity	7 (.47%)
Feeling Cold	7 (.47%)
Hypokalaemia	7 (.47%)
Hypothermia	7 (.47%)
Renal Failure	7 (.47%)
Renal Impairment	7 (.47%)
Rhabdomyolysis	7 (.47%)
Somnolence	7 (.47%)
Atrial Fibrillation	6 (.4%)
Blister	6 (.4%)
Blood Urea Increased	6 (.4%)
Cardiomyopathy	6 (.4%)
Dehydration	6 (.4%)
Diarrhoea	6 (.4%)
Drug Exposure During Pregnancy	6 (.4%)
Dysphagia	6 (.4%)
Gastrointestinal Haemorrhage	6 (.4%)
Heart Rate Decreased	6 (.4%)
Hypoxic Encephalopathy	6 (.4%)
Pain	6 (.4%)
Palpitations	6 (.4%)
Purpura	6 (.4%)
Sinus Bradycardia	6 (.4%)
Speech Disorder	6 (.4%)
Atrioventricular Block Complete	5 (.34%)
Bladder Transitional Cell Carcinoma...	5 (.34%)
Blood Pressure Inadequately Control...	5 (.34%)
Disorientation	5 (.34%)
Drug Ineffective	5 (.34%)
Faeces Discoloured	5 (.34%)
Floppy Iris Syndrome	5 (.34%)
Haemoglobin Decreased	5 (.34%)
Hyperhidrosis	5 (.34%)
Hypomagnesaemia	5 (.34%)
Intentional Overdose	5 (.34%)
Interstitial Lung Disease	5 (.34%)
Medication Error	5 (.34%)
Mental Disorder	5 (.34%)
Nausea	5 (.34%)
Presyncope	5 (.34%)
Primary Hyperaldosteronism	5 (.34%)
Pruritus	5 (.34%)
Pulmonary Oedema	5 (.34%)
Renal Artery Occlusion	5 (.34%)
Treatment Noncompliance	5 (.34%)
Abdominal Discomfort	4 (.27%)
Alanine Aminotransferase Increased	4 (.27%)
Arrhythmia	4 (.27%)
Aspartate Aminotransferase Increase...	4 (.27%)
Atrioventricular Block First Degree	4 (.27%)
C-reactive Protein Increased	4 (.27%)
Cardiac Failure	4 (.27%)
Cerebrovascular Accident	4 (.27%)
Compression Fracture	4 (.27%)
Cough	4 (.27%)
Death	4 (.27%)
Feeling Abnormal	4 (.27%)
Femoral Artery Occlusion	4 (.27%)

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This graph shows the top adverse events submitted to the FDA for Prazosin, as well as related generic and/or brandname drugs containing the same primary active ingredients, from Q1 2004 to Q3 2012. Adverse events are counted if Prazosin is flagged as a suspect drug causing the adverse event. For each adverse event listed, percent (%) represents percentage of the adverse event to all adverse events reported for the drug. Percent does not represent a rate related to drug utilization.

Adverse Event Categories for Prazosin

What are the most common Prazosin adverse events reported to the FDA?

Neurological	115 (7.71%)
Cardiac Arrhythmias	84 (5.63%)
Decreased And Nonspecific Blood Pre...	77 (5.16%)
Cardiac And Vascular Investigations	55 (3.69%)
Renal Disorders	49 (3.28%)
Respiratory	48 (3.22%)
Gastrointestinal Signs	36 (2.41%)
Therapeutic And Nontherapeutic Effe...	36 (2.41%)
Electrolyte And Fluid Balance Condi...	35 (2.35%)
Injuries	28 (1.88%)
Epidermal And Dermal Conditions	25 (1.68%)
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Hepatic And Hepatobiliary	25 (1.68%)
Medication Errors	25 (1.68%)
Suicidal And Self-injurious Behavio...	23 (1.54%)
Neuromuscular	22 (1.47%)
Body Temperature Conditions	18 (1.21%)
Gastrointestinal Hemorrhages	18 (1.21%)
Renal And Urinary Tract Investigati...	18 (1.21%)
Headaches	17 (1.14%)
Renal And Urinary Tract Neoplasms M...	17 (1.14%)
Urinary Tract Signs	17 (1.14%)
Infections - Pathogen Unspecified	16 (1.07%)
Physical Examination Topics	16 (1.07%)
Glucose Metabolism Disorders	15 (1.01%)
Hematology Investigations	14 (.94%)
Procedural And Device Related Injur...	14 (.94%)
Coagulopathies And Bleeding Diathes...	13 (.87%)
Hepatobiliary	13 (.87%)
Movement Disorders	13 (.87%)
Muscle	13 (.87%)
Hematological And Lymphoid Tissue T...	12 (.8%)
Lower Respiratory Tract Disorders	12 (.8%)
Metabolic, Nutritional And Blood Ga...	12 (.8%)
Myocardial	12 (.8%)
Chemical Injury And Poisoning	11 (.74%)
Vascular Hypertensive	11 (.74%)
Allergic Conditions	10 (.67%)
Cardiac Disorder Signs	10 (.67%)
Musculoskeletal And Connective Tiss...	10 (.67%)
Protein And Chemistry Analyses	10 (.67%)
Vision	10 (.67%)
Acid-base	9 (.6%)
Anxiety Disorders	9 (.6%)
Gastrointestinal Ulceration And Per...	9 (.6%)
Heart Failures	9 (.6%)
Mental Impairment	9 (.6%)
Central Nervous System Vascular	8 (.54%)
Deliria	8 (.54%)
Psychiatric	8 (.54%)
Skin Appendage Conditions	8 (.54%)
Adrenal Gland	7 (.47%)
Arteriosclerosis, Stenosis, Vascula...	7 (.47%)
Bone And Joint Injuries	7 (.47%)
Dental And Gingival Conditions	7 (.47%)
Enzyme	7 (.47%)
Gastrointestinal Motility And Defec...	7 (.47%)
Lifestyle Issues	7 (.47%)
Upper Respiratory Tract Disorders	7 (.47%)
Viral Infectious	7 (.47%)
Cardiac Valve	6 (.4%)
Disturbances In Thinking	6 (.4%)
Embolism And Thrombosis	6 (.4%)
Encephalopathies	6 (.4%)
Joint	6 (.4%)
Sexual Function And Fertility	6 (.4%)
Skin Vascular Abnormalities	6 (.4%)
Sleep Disorders	6 (.4%)
Therapeutic Procedures And Supporti...	6 (.4%)
Vascular	6 (.4%)
Water, Electrolyte And Mineral	6 (.4%)
Bone, Calcium, Magnesium And Phosph...	5 (.34%)
Depressed Mood Disorders	5 (.34%)
Inner Ear And Viiith Cranial Nerve	5 (.34%)
Musculoskeletal And Connective Tiss...	5 (.34%)
Nephropathies	5 (.34%)
Angiedema And Urticaria	4 (.27%)
Bacterial Infectious	4 (.27%)
Breast	4 (.27%)
Bronchial Disorders	4 (.27%)
Dissociative	4 (.27%)
Fatal Outcomes	4 (.27%)
Immune	4 (.27%)
Metabolism	4 (.27%)
Mood Disorders	4 (.27%)
Neonatal And Perinatal Conditions	4 (.27%)
Appetite And General Nutritional	3 (.2%)
Connective Tissue Disorders	3 (.2%)
Gallbladder	3 (.2%)
Obstetric And Gynecological Therape...	3 (.2%)
Psychiatric And Behavioural Symptom...	3 (.2%)
Vascular Hemorrhagic	3 (.2%)
Anemias Nonhemolytic And Marrow Dep...	2 (.13%)
Cardiac And Vascular Disorders Cong...	2 (.13%)
Changes In Physical Activity	2 (.13%)
Communication Disorders	2 (.13%)
Cranial Nerve Disorders	2 (.13%)
Eye	2 (.13%)
Fetal And Neonatal	2 (.13%)
Gastrointestinal Vascular Condition...	2 (.13%)
Hearing	2 (.13%)
Immunology And Allergy	2 (.13%)

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This graph shows the top categories of adverse events submitted to the FDA for Prazosin, as well as related generic and/or brandname drugs containing the same primary active ingredients, from Q1 2004 to Q3 2012. Adverse events are counted if Prazosin is flagged as a suspect drug causing the adverse event. For each adverse event listed, percent (%) represents percentage of the adverse event to all adverse events reported for the drug. Percent does not represent a rate related to drug utilization.