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Chloroquine Side Effects

Report Chloroquine Side Effects

If you experienced any harmful or unwanted effects of Chloroquine, please share your experience. This could help to raise awareness about Chloroquine side effects, identify uknown risks and inform health professionals and patients taking Chloroquine.

Examples: headache, dizziness


The most commonly reported Chloroquine side effects are:
Lower Blood Pressure (3 reports)
Alopecia (1 reports)
Labirinthitis (1 reports)
Phycosis (1 reports)
Sleeplessness, Cramps In Lower And Upper Limbs, St (1 reports)

If you have experienced a side effect listed above, you can check a box to report it.


To view a complete list of submitted side effects, please follow the link Chloroquine side effects . You can also compare Chloroquine side effects or view FDA reports.

Chloroquine Side Effects reported to FDA

The following Chloroquine reports list potential signals of serious risks and new safety information that were identified using the FDA Adverse Event Reporting System (FAERS).
The FAERS is a database that contains information on adverse event and medication errors reports submitted to FDA by healthcare professionals (such as physicians, pharmacists, nurses and others), consumers (such as patients, family members, layers and others) and manufacturers.


The appearance of Chloroquine on this list does not mean that FDA has concluded that the drug has the listed risk. It means that FDA has identified a potential safety issue, but it does not mean that FDA has identified a causal relationship between the drug and the listed risk.

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Intentional Overdose
on Aug 02, 2013 Female from CH , 25 years of age, was diagnosed with and was treated with Chloroquine (salt Not Specified). Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: intentional overdose. Chloroquine (salt Not Specified) dosage: N/A.
Associated medications used:

Tonic Convulsion, Torsade De Pointes, Sepsis, Hypokalaemia, Blood Calcium Decreased
Patient was taking Chloroquine Phosphate. Patient felt the following Chloroquine side effects: tonic convulsion, torsade de pointes, sepsis, hypokalaemia, blood calcium decreased on Jul 22, 2013 from IN Additional patient health information: Male , 63 years of age, . Chloroquine Phosphate dosage: N/A.
Multiple prescriptions taken: Patient was hospitalized.

Congestive Cardiomyopathy, Cardiac Failure Congestive, Cardio-respiratory Arrest, Dizziness, Muscular Weakness, Muscle Atrophy, Hypoxia, Atrioventricular Block Complete, Ventricular Hypertrophy
Adverse event was reported on Jul 18, 2013 by a Female taking Chloroquine Phosphate (Dosage: 500 Mg/d) was diagnosed with and. Location: US , 38 years of age, After Chloroquine was administered, patient encountered several Chloroquine side effects: congestive cardiomyopathy, cardiac failure congestive, cardio-respiratory arrest, dizziness, muscular weakness, muscle atrophy, hypoxia, atrioventricular block complete, ventricular hypertrophy. Patient was hospitalized.

Foaming At Mouth, Loss Of Consciousness, Tonic Convulsion, Ventricular Tachycardia, Sepsis, Hypokalaemia, Electrocardiogram T Wave Inversion, Prothrombin Time Prolonged, Electrocardiogram Qt Prolonged
on Jul 08, 2013 Male from IN , 63 years of age, was diagnosed with and was treated with Chloroquine. Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: foaming at mouth, loss of consciousness, tonic convulsion, ventricular tachycardia, sepsis, hypokalaemia, electrocardiogram t wave inversion, prothrombin time prolonged, electrocardiogram qt prolonged. Chloroquine dosage: N/A. Patient was hospitalized.


Cardiotoxicity, Conduction Disorder, Cardiac Failure, Ventricular Hypertrophy, Cardiac Disorder, Arrhythmia
on Jun 24, 2013 Female from ES , 59 years of age, was diagnosed with and was treated with Chloroquine. Patient felt the following Chloroquine side effects: cardiotoxicity, conduction disorder, cardiac failure, ventricular hypertrophy, cardiac disorder, arrhythmia. Chloroquine dosage: N/A. Patient was hospitalized.

Cardiotoxicity, Hypotension, Atrioventricular Block Complete, Electrocardiogram Qrs Complex Prolonged, Electrocardiogram Qt Prolonged, Torsade De Pointes, Ventricular Fibrillation, Mixed Connective Tissue Disease, Condition Aggravated
Patient was taking Chloroquine. After Chloroquine was administered, patient encountered several Chloroquine side effects: cardiotoxicity, hypotension, atrioventricular block complete, electrocardiogram qrs complex prolonged, electrocardiogram qt prolonged, torsade de pointes, ventricular fibrillation, mixed connective tissue disease, condition aggravated on May 20, 2013 from HU Additional patient health information: Female , 56 years of age, was diagnosed with and. Chloroquine dosage: N/A. Patient was hospitalized.

Cardiac Disorder, Conduction Disorder, Cardiac Failure, Dyspnoea, Venous Pressure Jugular Increased, Rales, Oedema, Cardiomegaly, Ventricular Hypertrophy
Adverse event was reported on Jul 10, 2013 by a Female taking Chloroquine Phosphate (Dosage: N/A) was diagnosed with and. Location: ES , 59 years of age, Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: cardiac disorder, conduction disorder, cardiac failure, dyspnoea, venous pressure jugular increased, rales, oedema, cardiomegaly, ventricular hypertrophy. Patient was hospitalized.

Dizziness, Balance Disorder
on May 10, 2013 Female from US , weighting 150.0 lb, was diagnosed with and was treated with Chloroquine. Patient felt the following Chloroquine side effects: dizziness, balance disorder. Chloroquine dosage: 7 Pills; 1 Per Week.
Multiple prescriptions taken:

Methaemoglobinaemia, Loss Of Consciousness
on Sep 17, 2012 Male from IN , 25 years of age, was diagnosed with and was treated with Chloroquine Phosphate. After Chloroquine was administered, patient encountered several Chloroquine side effects: methaemoglobinaemia, loss of consciousness. Chloroquine Phosphate dosage: 2 Tablet (600 Mg Base). Patient was hospitalized.

Cardiotoxicity, Cardiomyopathy, Atrioventricular Block Complete
Patient was taking Chloroquine. Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: cardiotoxicity, cardiomyopathy, atrioventricular block complete on Apr 29, 2013 from HU Additional patient health information: Female , 56 years of age, was diagnosed with and. Chloroquine dosage: N/A. Patient was hospitalized.

Cardiotoxicity, Asthenia, Dizziness, Hypotension, Atrioventricular Block Complete, Electrocardiogram Qt Prolonged, Ventricular Fibrillation, Myopathy, Cardiac Arrest
Adverse event was reported on Apr 17, 2013 by a Female taking Chloroquine Phosphate (Dosage: N/A) was diagnosed with and. Location: HU , 56 years of age, Patient felt the following Chloroquine side effects: cardiotoxicity, asthenia, dizziness, hypotension, atrioventricular block complete, electrocardiogram qt prolonged, ventricular fibrillation, myopathy, cardiac arrest.
Multiple prescriptions taken: Patient was hospitalized.

Syncope, Atrioventricular Block Complete, Hypertrophic Cardiomyopathy, Cardiac Failure Congestive, Maculopathy, Blood Pressure Systolic Increased, Retinopathy, Hypertensive Heart Disease
on Apr 15, 2013 Female from DE , 65 years of age, was diagnosed with and was treated with Chloroquine. After Chloroquine was administered, patient encountered several Chloroquine side effects: syncope, atrioventricular block complete, hypertrophic cardiomyopathy, cardiac failure congestive, maculopathy, blood pressure systolic increased, retinopathy, hypertensive heart disease. Chloroquine dosage: 250 Mg, Daily.
Multiple concurrent drugs taken:
  • Naproxen (500 Mg, Bid)
  • Prednisolone
  • Oxycodone
  • Nebivolol
  • Torsemide
  • Pantoprazole


Retinopathy
on Apr 05, 2013 Female from TR , 62 years of age, was treated with Chloroquine. Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: retinopathy. Chloroquine dosage: 2 Years.

Atrioventricular Block Complete, Torsade De Pointes, Electrocardiogram Qt Prolonged, Cardiac Arrest, Ventricular Fibrillation
Patient was taking Chloroquine (salt Not Specified). Patient felt the following Chloroquine side effects: atrioventricular block complete, torsade de pointes, electrocardiogram qt prolonged, cardiac arrest, ventricular fibrillation on Apr 02, 2013 from HU Additional patient health information: Female , 56 years of age, . Chloroquine (salt Not Specified) dosage: Supramaximal Dose.

Retinal Toxicity, Keratopathy, Weight Decreased, Retinal Pigment Epitheliopathy, Retinal Disorder, Visual Acuity Reduced
Adverse event was reported on Mar 27, 2013 by a Female taking Chloroquine Phosphate (Dosage: N/A) was diagnosed with and. Location: CA , 47 years of age, After Chloroquine was administered, patient encountered several Chloroquine side effects: retinal toxicity, keratopathy, weight decreased, retinal pigment epitheliopathy, retinal disorder, visual acuity reduced.

Abdominal Pain, Diarrhoea, Hepatomegaly, Liver Tenderness, Liver Abscess, Posturing, Foaming At Mouth, Loss Of Consciousness, Ventricular Tachycardia
on Mar 07, 2013 Male from IN , 63 years of age, was treated with Chloroquine. Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: abdominal pain, diarrhoea, hepatomegaly, liver tenderness, liver abscess, posturing, foaming at mouth, loss of consciousness, ventricular tachycardia. Chloroquine dosage: (df). Patient was hospitalized.

Weight Decreased, Keratopathy, Retinal Toxicity, Visual Field Defect, Retinal Disorder
on Feb 06, 2013 Female from CA , 47 years of age, was diagnosed with and was treated with Chloroquine. Patient felt the following Chloroquine side effects: weight decreased, keratopathy, retinal toxicity, visual field defect, retinal disorder. Chloroquine dosage: N/A.

Mania, Anxiety, Delusion Of Grandeur, Flight Of Ideas, Distractibility, Irritability, Logorrhoea, Energy Increased, Attention Deficit/hyperactivity Disorder
Patient was taking Chloroquine (salt Not Specified). After Chloroquine was administered, patient encountered several Chloroquine side effects: mania, anxiety, delusion of grandeur, flight of ideas, distractibility, irritability, logorrhoea, energy increased, attention deficit/hyperactivity disorder on Mar 06, 2013 from SI Additional patient health information: Male , 72 years of age, was diagnosed with and. Chloroquine (salt Not Specified) dosage: N/A. Patient was hospitalized.

Epilepsy, Grand Mal Convulsion
Adverse event was reported on Jan 30, 2013 by a Female taking Chloroquine (Dosage: 250 Milligram Daily;) . Location: CA , child 7 years of age, weighting 50.71 lb, Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: epilepsy, grand mal convulsion.
Associated medications used: Patient was hospitalized.

Cardiomyopathy, Renal Failure Acute, Transaminases Increased, Atrioventricular Block Complete, Cardiac Failure Congestive, Cardiogenic Shock, Congestive Cardiomyopathy, Myopathy Toxic, Cardio-respiratory Arrest
on Jan 04, 2013 Female from US , 38 years of age, was diagnosed with and was treated with Chloroquine Phosphate. Patient felt the following Chloroquine side effects: cardiomyopathy, renal failure acute, transaminases increased, atrioventricular block complete, cardiac failure congestive, cardiogenic shock, congestive cardiomyopathy, myopathy toxic, cardio-respiratory arrest. Chloroquine Phosphate dosage: N/A. Patient was hospitalized.

Atrioventricular Block Complete, Cardiac Failure Congestive, Congestive Cardiomyopathy, Cardiogenic Shock, Renal Failure Acute, Cardio-respiratory Arrest, Toxicity To Various Agents, Dizziness, Syncope
on Dec 20, 2012 Female from US , 38 years of age, was diagnosed with and was treated with Chloroquine. After Chloroquine was administered, patient encountered several Chloroquine side effects: atrioventricular block complete, cardiac failure congestive, congestive cardiomyopathy, cardiogenic shock, renal failure acute, cardio-respiratory arrest, toxicity to various agents, dizziness, syncope. Chloroquine dosage: N/A. Patient was hospitalized.

Ocular Toxicity, Maculopathy, Colour Vision Tests Abnormal, Scotoma, Fatigue, Atrioventricular Block Complete, Electrocardiogram Qrs Complex Prolonged, Pallor, Cardiotoxicity
Patient was taking Chloroquine. Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: ocular toxicity, maculopathy, colour vision tests abnormal, scotoma, fatigue, atrioventricular block complete, electrocardiogram qrs complex prolonged, pallor, cardiotoxicity on Nov 29, 2012 from ES Additional patient health information: Female , 59 years of age, was diagnosed with and. Chloroquine dosage: (250 Mg 6 Days A Week, 936 G Cumulative). Patient was hospitalized.

Congestive Cardiomyopathy, Dizziness, Syncope, Muscular Weakness, Transaminases Increased, Atrioventricular Block, Cardiac Failure Congestive, Atrioventricular Block Complete, Hypoxia
Adverse event was reported on Nov 20, 2012 by a Female taking Chloroquine (Dosage: N/A) was diagnosed with and. Location: US , 38 years of age, Patient felt the following Chloroquine side effects: congestive cardiomyopathy, dizziness, syncope, muscular weakness, transaminases increased, atrioventricular block, cardiac failure congestive, atrioventricular block complete, hypoxia. Patient was hospitalized.

Cardiomyopathy, Hypoxia, Muscular Weakness, Blood Creatine Phosphokinase Increased, Cardiac Failure Congestive, Cardiogenic Shock, Atrioventricular Block Complete, Syncope
on Nov 16, 2012 Female from US , 38 years of age, was diagnosed with and was treated with Chloroquine (salt Not Specified). After Chloroquine was administered, patient encountered several Chloroquine side effects: cardiomyopathy, hypoxia, muscular weakness, blood creatine phosphokinase increased, cardiac failure congestive, cardiogenic shock, atrioventricular block complete, syncope. Chloroquine (salt Not Specified) dosage: N/A. Patient was hospitalized.

Cardiomyopathy, Hypoxia, Muscular Weakness, Blood Creatine Phosphokinase Increased, Cardiac Failure Congestive, Cardiogenic Shock, Atrioventricular Block Complete, Syncope
on Aug 30, 2013 Female from US , 38 years of age, was diagnosed with and was treated with Chloroquine (salt Not Specified). Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: cardiomyopathy, hypoxia, muscular weakness, blood creatine phosphokinase increased, cardiac failure congestive, cardiogenic shock, atrioventricular block complete, syncope. Chloroquine (salt Not Specified) dosage: N/A. Patient was hospitalized.

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Record and Track Your Side Effects

It is very important to keep track of all side effects and discuss them with your doctor. If you think you may have a medical emergency, call your doctor or 911 immediately.

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Most drugs have a large list of nonsevere or mild adverse effects which do not rule out continued usage. These effects depend on individual sensitivity, and can include nausea, dizziness, diarrhea, malaise, vomiting, headache, dermatitis, dry mouth, etc. Check commonly reported side effects . These can be considered a form of pseudo-allergic reaction, as not all users experience these effects; many users experience none at all.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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