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Chloroquine Side Effects

Common Chloroquine Side Effects

The most commonly reported Chloroquine side effects (click to view or check a box to report):

Atrioventricular Block Complete (25)
Mania (15)
Electrocardiogram Qrs Complex Prolonged (13)
Cardiac Arrest (13)
Cardiac Failure Congestive (12)
Electrocardiogram Qt Prolonged (11)
Dizziness (11)
Muscular Weakness (10)
Cardiomyopathy (10)
Cardiotoxicity (10)
Overdose (10)
Toxicity To Various Agents (10)
Ventricular Fibrillation (10)
Cardiogenic Shock (9)
Loss Of Consciousness (9)
Abdominal Pain (9)
Insomnia (8)
Psychotic Disorder (8)
Syncope (8)
Torsade De Pointes (8)

➢ More



If you or someone in your family has experienced a serious side effect to a health product, you are encouraged to report the experience to your health care professional (e.g. physician, pharmacist). You could also complete a copy of the side effect reporting form or report your side effect to FDA.

Side effects reports are analyzed to discover potential health product safety signals. Some important reactions may take an extremely long time to develop or occur infrequently. Continued monitoring of adverse reactions is thus essential to maintain a comprehensive safety and effectiveness profile of health products.

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).
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 found a causal relationship between the drug and the listed risk.
Systemic Lupus Erythematosus, Psychomotor Retardation, Feelings Of Worthlessness, Decreased Interest, Agitation, Suicidal Ideation, Major Depression, Blood Cholesterol Increased, Low Density Lipoprotein Increased
on Mar 04, 2014 Male from PL , 31 years of age, was diagnosed with and was treated with Chloroquine. Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: systemic lupus erythematosus, psychomotor retardation, feelings of worthlessness, decreased interest, agitation, suicidal ideation, major depression, blood cholesterol increased, low density lipoprotein increased. Chloroquine dosage: N/A.
Associated medications used:
  • Methylprednisolone
  • Sulpiride
  • Quetiapine
  • Lamotrigine
Patient was hospitalized.

Suicidal Ideation, Major Depression, Low Density Lipoprotein Increased, Blood Cholesterol Increased, Platelet Count Decreased, Mania, Bipolar Disorder, Condition Aggravated
Patient was taking Chloroquine. Patient felt the following Chloroquine side effects: suicidal ideation, major depression, low density lipoprotein increased, blood cholesterol increased, platelet count decreased, mania, bipolar disorder, condition aggravated on Feb 28, 2014 from PL Additional patient health information: Male , 31 years of age, was diagnosed with and. Chloroquine dosage: (125 Mg Bid), (250 Mg, Daily).
Multiple prescriptions taken:
  • Methlyprednisolone
  • Perazine
  • Mirtazapine
  • Hydroxyzine
  • Hydroxychloroquine
  • Quetiapine
  • Lamotrigine
  • Clorazepate Dipotassium
Patient was hospitalized.

Completed Suicide, Toxicity To Various Agents, Fluid Overload, Pulmonary Congestion, Cardiac Failure Congestive, Flatulence
Adverse event was reported on Feb 21, 2014 by a Female taking Chloroquine (Dosage: N/A) . Location: CH , 25 years of age, After Chloroquine was administered, patient encountered several Chloroquine side effects: completed suicide, toxicity to various agents, fluid overload, pulmonary congestion, cardiac failure congestive, flatulence.
Multiple concurrent drugs taken:
  • Diazepam


Cytotoxic Cardiomyopathy, Myopathy Toxic, Cardio-respiratory Arrest, Atrioventricular Block Complete, Cardiac Failure Congestive, Syncope
on Feb 10, 2014 Female from US , 38 years of age, was diagnosed with and was treated with Chloroquine (watson Laboratories). Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: cytotoxic cardiomyopathy, myopathy toxic, cardio-respiratory arrest, atrioventricular block complete, cardiac failure congestive, syncope. Chloroquine (watson Laboratories) dosage: 500 Mg, Daily. Patient was hospitalized.


Poisoning, Completed Suicide
on Jan 31, 2014 Female from US , 25 years of age, was treated with Chloroquine. Patient felt the following Chloroquine side effects: poisoning, completed suicide. Chloroquine dosage: Df, Oral.
Multiple prescriptions taken:
  • Alprazolam (Df, Oral)
  • Zolpidem (Df Oral)
  • Diphenhydramine (Df Oral)
  • Mirtazapine (Df Oral)


Bipolar Disorder, Depression, Psychotic Disorder, Mania, Feelings Of Worthlessness, Psychomotor Retardation, Negative Thoughts, Decreased Interest, Agitation
Patient was taking Chloroquine (salt Not Specified). After Chloroquine was administered, patient encountered several Chloroquine side effects: bipolar disorder, depression, psychotic disorder, mania, feelings of worthlessness, psychomotor retardation, negative thoughts, decreased interest, agitation on Mar 05, 2014 from PL Additional patient health information: Male , 31 years of age, was diagnosed with and. Chloroquine (salt Not Specified) dosage: N/A. Patient was hospitalized.

Toxicity To Various Agents
Adverse event was reported on Jan 13, 2014 by a Female taking Chloroquine (Dosage: N/A) . Location: US , 25 years of age, Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: toxicity to various agents.
Associated medications used:
  • Diphenhydramine Hydrochloride
  • Alprazolam
  • Zolpidem
  • Mirtazapine


Bipolar Disorder, Major Depression, Mania, Suicidal Ideation, Systemic Lupus Erythematosus, Psychomotor Retardation, Feelings Of Worthlessness, Decreased Interest
on Dec 24, 2013 Male from PL , 31 years of age, was diagnosed with and was treated with Chloroquine Phosphate. Patient felt the following Chloroquine side effects: bipolar disorder, major depression, mania, suicidal ideation, systemic lupus erythematosus, psychomotor retardation, feelings of worthlessness, decreased interest. Chloroquine Phosphate dosage: N/A.
Multiple prescriptions taken:
  • Methylprednisolone (methylprednisolone)
Patient was hospitalized.

Suicide Attempt, Coma, Overdose, Coma Scale Abnormal, Cardio-respiratory Arrest, Ventricular Fibrillation, Tachycardia, Hypoxia, Hypercapnia
on Dec 23, 2013 Male from ES , 30 years of age, was diagnosed with and was treated with Chloroquine Phosphate. After Chloroquine was administered, patient encountered several Chloroquine side effects: suicide attempt, coma, overdose, coma scale abnormal, cardio-respiratory arrest, ventricular fibrillation, tachycardia, hypoxia, hypercapnia. Chloroquine Phosphate dosage: N/A. Patient was hospitalized.

Overdose, Cinchonism, Abdominal Pain, Vomiting, Intentional Self-injury, Hypotension, Blood Potassium Decreased, Electrocardiogram Qrs Complex Prolonged, Electrocardiogram Qt Prolonged
Patient was taking Chloroquine Phosphate. Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: overdose, cinchonism, abdominal pain, vomiting, intentional self-injury, hypotension, blood potassium decreased, electrocardiogram qrs complex prolonged, electrocardiogram qt prolonged on Nov 21, 2013 from US Additional patient health information: Female , 44 years of age, . Chloroquine Phosphate dosage: 250 Mg, 20 Pills Once. Patient was hospitalized.

Intentional Self-injury, Abdominal Pain, Vomiting, Hypotension, Blood Potassium Decreased, Blood Magnesium Decreased, Electrocardiogram Pr Prolongation, Electrocardiogram Qrs Complex Prolonged, Cinchonism
Adverse event was reported on Nov 18, 2013 by a Female taking Chloroquine (Dosage: N/A) . Location: US , 44 years of age, Patient felt the following Chloroquine side effects: intentional self-injury, abdominal pain, vomiting, hypotension, blood potassium decreased, blood magnesium decreased, electrocardiogram pr prolongation, electrocardiogram qrs complex prolonged, cinchonism.

Malaria, Vomiting, Pyrexia, Chills, Dizziness, Cough, Nausea, Aphagia, Insomnia
on Nov 15, 2013 Male from CN , 20 years of age, was diagnosed with and was treated with Chloroquine. After Chloroquine was administered, patient encountered several Chloroquine side effects: malaria, vomiting, pyrexia, chills, dizziness, cough, nausea, aphagia, insomnia. Chloroquine dosage: N/A.
Multiple concurrent drugs taken:
  • Primaquine
Patient was hospitalized.

Insomnia, Energy Increased, Suicidal Ideation, Nervousness, Crying, Delusion Of Grandeur, Hallucination, Auditory, Abnormal Behaviour, Confusional State
on Oct 31, 2013 Female from TR , 39 years of age, was diagnosed with and was treated with Chloroquine. Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: insomnia, energy increased, suicidal ideation, nervousness, crying, delusion of grandeur, hallucination, auditory, abnormal behaviour, confusional state. Chloroquine dosage: N/A.
Associated medications used:
  • Sulfasalazine (sulfasalazine)
Patient was hospitalized.

Cinchonism, Intentional Overdose, Abdominal Pain, Vomiting, Electrocardiogram Qrs Complex Prolonged, Electrocardiogram Qt Prolonged, Hypotension, Hypokalaemia
Patient was taking Chloroquine Phosphate. Patient felt the following Chloroquine side effects: cinchonism, intentional overdose, abdominal pain, vomiting, electrocardiogram qrs complex prolonged, electrocardiogram qt prolonged, hypotension, hypokalaemia on Oct 25, 2013 from US Additional patient health information: Female , 44 years of age, was diagnosed with and. Chloroquine Phosphate dosage: 20 Tablets Of 250 Mg Each. Patient was hospitalized.

Retinal Pigment Epitheliopathy, Maculopathy, Toxicity To Various Agents
Adverse event was reported on Oct 15, 2013 by a Female taking Chloroquine (Dosage: N/A) was diagnosed with and. Location: ES , 34 years of age, After Chloroquine was administered, patient encountered several Chloroquine side effects: retinal pigment epitheliopathy, maculopathy, toxicity to various agents.

Depression, Overdose, 17 Ketosteroids Urine Decreased, Insomnia, Decreased Appetite, Decreased Interest, Depressed Mood, Suicidal Ideation
on Oct 07, 2013 Male from IN , 24 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: depression, overdose, 17 ketosteroids urine decreased, insomnia, decreased appetite, decreased interest, depressed mood, suicidal ideation. Chloroquine (salt Not Specified) dosage: N/A. Patient was hospitalized.

Mania, Cerebral Atrophy, Cerebellar Atrophy, Arteriosclerosis, Cognitive Disorder, Disturbance In Attention
on Sep 05, 2013 Male from SI , 72 years of age, was diagnosed with and was treated with Chloroquine Phosphate. Patient felt the following Chloroquine side effects: mania, cerebral atrophy, cerebellar atrophy, arteriosclerosis, cognitive disorder, disturbance in attention. Chloroquine Phosphate dosage: N/A.
Multiple prescriptions taken:
  • Etoricoxib
  • Gliquidone
  • Candesartan
  • Diltiazem (diltiazem) (diltiazem)
Patient was hospitalized.

Completed Suicide, Cardiac Disorder, Pulmonary Congestion, Flatulence, Toxicity To Various Agents
Patient was taking Chloroquine. After Chloroquine was administered, patient encountered several Chloroquine side effects: completed suicide, cardiac disorder, pulmonary congestion, flatulence, toxicity to various agents on Aug 16, 2013 from SZ Additional patient health information: Female , 25 years of age, . Chloroquine dosage: N/A.
Multiple concurrent drugs taken:
  • Diazepam
  • Lorazepam
  • Paspertin (metocloramide)
  • Olazapine
  • Trimipramine
  • Paroxetine


Urosepsis, Herpes Zoster, Off Label Use
Adverse event was reported on Aug 08, 2013 by a Female taking Chloroquine (salt Not Specified) (Dosage: N/A) was diagnosed with and. Location: PL , 47 years of age, Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: urosepsis, herpes zoster, off label use.
Associated medications used:
  • Hydroxychloroquine Sulfate
  • Mycophenolate Mofetil (1-2 G)
  • Prednisone
  • Prednisone
  • Cyclophosphamide
  • Corticosteroids
  • Immunoglobulin
  • Enoxaparin


Torsade De Pointes, Electrocardiogram Qt Shortened, Electrocardiogram Qt Prolonged, Ejection Fraction Decreased, Syncope
on Aug 08, 2013 Male from IN , 63 years of age, was diagnosed with and was treated with Chloroquine (salt Not Specified). Patient felt the following Chloroquine side effects: torsade de pointes, electrocardiogram qt shortened, electrocardiogram qt prolonged, ejection fraction decreased, syncope. Chloroquine (salt Not Specified) dosage: N/A. Patient was hospitalized.

Acquired Pigmented Retinopathy
on Aug 05, 2013 Female from IN , 52 years of age, was diagnosed with and was treated with Chloroquine. After Chloroquine was administered, patient encountered several Chloroquine side effects: acquired pigmented retinopathy. Chloroquine dosage: N/A.

Cardiac Disorder, Conduction Disorder, Cardiac Failure, Cardiotoxicity, Ventricular Hypertrophy
Patient was taking Chloroquine. Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: cardiac disorder, conduction disorder, cardiac failure, cardiotoxicity, ventricular hypertrophy on Aug 14, 2013 from ES Additional patient health information: Female , 59 years of age, was diagnosed with and. Chloroquine dosage: (df) 25 Years.

Cardiomyopathy, Renal Failure Acute, Cardiac Failure Congestive, Atrioventricular Block
Adverse event was reported on Jul 31, 2013 by a Female taking Chloroquine (watson Laboratories) (Dosage: 500 Mg, Daily) was diagnosed with and. Location: US , 38 years of age, Patient felt the following Chloroquine side effects: cardiomyopathy, renal failure acute, cardiac failure congestive, atrioventricular block.

Cardiomyopathy, Off Label Use, Ventricular Hypertrophy, Dyspnoea, Hyperdynamic Left Ventricle, Cardiac Murmur, Asthenia, Pulmonary Arterial Pressure Increased, Pulmonary Arterial Wedge Pressure Increased
on Jul 31, 2013 Female from US , 33 years of age, was diagnosed with and was treated with Chloroquine Phosphate. After Chloroquine was administered, patient encountered several Chloroquine side effects: cardiomyopathy, off label use, ventricular hypertrophy, dyspnoea, hyperdynamic left ventricle, cardiac murmur, asthenia, pulmonary arterial pressure increased, pulmonary arterial wedge pressure increased. Chloroquine Phosphate dosage: N/A.
Multiple concurrent drugs taken:
  • Quinacrine
Patient was hospitalized.

Cardiomyopathy, Off Label Use, Ventricular Hypertrophy, Cardiomegaly, Ventricular Fibrillation, Cardiac Arrest, Coma, Cyanosis, Hypotension
on Jul 31, 2013 Female from US , 73 years of age, weighting 109.1 lb, was diagnosed with and was treated with Chloroquine Phosphate. Directly after, patient experienced the unwanted or unexpected Chloroquine side effects: cardiomyopathy, off label use, ventricular hypertrophy, cardiomegaly, ventricular fibrillation, cardiac arrest, coma, cyanosis, hypotension. Chloroquine Phosphate dosage: N/A.
Associated medications used:
  • Digoxin
  • Diuretics
Patient was hospitalized.

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Keep Track of Side Effects

Note Your Observations

It is really important to keep of your symptoms, right from the time you start a new medicine. You can do it any way you prefer: in a notebook, in a computer file or using our online tool. You should also note down any other medicines you are taking at the same time, because there could be an interaction between these medicines.

Why Your Notes are Important

Your notes could be helpful in several ways:

  • You can use them to remind you of details that may alert your health care professional(s) to a problem
  • You will have a record to refer to in the future, in case you are ever prescribed the same medicine again

  • Log Form

    You can use the following log form to write down important information, like the date and time you experienced a side effect and your symptoms, how strong the symptoms were, and any other medicines you were using.

    Medicine Name and Dosage:

     

    Side Effects

    Scale

    Date & Time

    Other Medicine(s) or Treatment(s)

     

     

     

     

    Scale: 1 = very mild to 10 = very bad


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  • Register to track your side effects

  • 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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