Chloroquine Side Effects Chloroquine Reviews: muscle weakness, lethargy, lightheaded, difficulty reading, nervousness, restlessness, View Chloroquine Adverse Event Reports: patient, 51 years of age, was diagnosed with rheumatoid arthritis and took Chloroquine Resochin 50 Comprimidos Patient was hospitalized.

Have Your experienced Chloroquine Side Effects? You are not alone. Many patients report unusual symptoms after using Chloroquine. This forum raises awareness about Chloroquine Side Effects.

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Common Chloroquine Side Effects

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Chloroquine Forum

muscle weakness, lethargy, lightheaded, difficulty reading, nervousness, restlessness, ...Keep Reading

I was diagnosed on Monday January 9th with Malaria PF 1+. Took coartem,...Keep Reading

Headaches, tinnitus, ichy rash, twiching muscles, insomnia, I would ...Keep Reading

I am taking the dosage of this medicine that is listed here . ...Keep Reading

I have been on Hydroxychloroquine Sulfate for just over 2 years for rheumatoid arthritis....Keep Reading

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Chloroquine Adverse Effect Reports (FDA)

Enter Unusual Symptoms or Side Effects:

Showing 1-25 of 119 

Septic Shock, Pneumonia, Multi-organ Failure (8455163-8)
on Jun 11, 2012 Male patient from SPAIN , 51 years of age, was diagnosed with and was treated with Chloroquine Phosphate(View Usage). Patient experienced the following unwanted or unexpected effects: septic shock, pneumonia (pneumonia Questions), multi-organ failure. Chloroquine Phosphate dosage: Resochin 50 Comprimidos.
Patient was taking other medications: Patient was hospitalized.

Toe Amputation, Hypotension, Peripheral Ischaemia, Erythema, Oedema Peripheral, Concomitant Disease Aggravated, Ischaemic Ulcer, Headache, Necrosis (8449361-7)
Patient was taking Chloroquine (View Usage). Patient had the following side effects: toe amputation, hypotension, peripheral ischaemia, erythema, oedema peripheral, concomitant disease aggravated, ischaemic ulcer, headache (headache Questions), necrosis on Jun 07, 2012 from SPAIN Additional patient health information: Female patient , 41 years of age, . Chloroquine dosage: N/A.
Patient was taking other medications:

Cyanosis, Loss Of Consciousness, Oxygen Saturation Decreased, Po2 Increased, Methaemoglobinaemia (8448991-6)
Adverse event was reported on May 29, 2012 by a Male patient taking Chloroquine Diphosphate (View Usage) (Dosage: 1200 Mg; X1; Po) was diagnosed with
  • pyrexia
and. Location: INDIA , 25 years of age, After Chloroquine was administered, patient had the following side effects: cyanosis, loss of consciousness, oxygen saturation decreased, po2 increased, methaemoglobinaemia. Patient was hospitalized.

Loss Of Consciousness, Po2 Increased, Methaemoglobinaemia, Cyanosis (8409138-5)
on May 24, 2012 Male patient from INDIA , 25 years of age, was treated with Chloroquine Phosphate (View Usage). Patient experienced the following unwanted or unexpected effects: loss of consciousness, po2 increased, methaemoglobinaemia, cyanosis. Chloroquine Phosphate dosage: N/A. Patient was hospitalized.


Pyrexia, Headache, Heart Rate Increased, Hepatomegaly, Haemolysis, Po2 Increased, Hypoxia, Cerebral Ischaemia, Pulse Pressure Decreased (8385699-X)
on May 17, 2012 Female patient from INDIA , 16 years of age, was diagnosed with and was treated with Chloroquine Phosphate(View Usage). Patient had the following side effects: pyrexia, headache (headache Questions), heart rate increased, hepatomegaly, haemolysis, po2 increased, hypoxia, cerebral ischaemia, pulse pressure decreased. Chloroquine Phosphate dosage: (df).
Patient was taking other medications: Patient was hospitalized.

Ventricular Tachycardia, Toxicity To Various Agents, Ventricular Fibrillation, Pulseless Electrical Activity, Neurotoxicity (8381935-4)
Patient was taking Chloroquine Phosphate (View Usage). After Chloroquine was administered, patient had the following side effects: ventricular tachycardia, toxicity to various agents, ventricular fibrillation, pulseless electrical activity, neurotoxicity on May 11, 2012 from BELGIUM Additional patient health information: Male patient , 24 years of age, . Chloroquine Phosphate dosage: 58 Tablets Of 250 Mg.
Patient was taking other medications:

Pain, Insomnia, Limb Immobilisation, Herpes Virus Infection, Urticaria (8378148-9)
Adverse event was reported on May 17, 2012 by a Female patient taking Chloroquine Phosphate (View Usage) (Dosage: N/A) was diagnosed with and. Location: MEXICO , weighting 167.6 lb, Patient experienced the following unwanted or unexpected effects: pain (pain Questions), insomnia, limb immobilisation, herpes virus infection, urticaria.
Patient was taking other medications:

Herpes Zoster (8276694-X)
on Apr 12, 2012 Male patient from UNITED STATES , 34 years of age, weighting 235.0 lb, was diagnosed with
  • malaria prophylaxis
and was treated with Chloroquine Phosphate (View Usage). Patient had the following side effects: herpes zoster. Chloroquine Phosphate dosage: 500 Mg.

Pneumonia, Cardiogenic Shock, Ventricular Fibrillation, Intentional Overdose (8176362-9)
on Feb 22, 2012 Male patient from FRANCE , 53 years of age, was treated with Chloroquine Phosphate(View Usage). After Chloroquine was administered, patient had the following side effects: pneumonia (pneumonia Questions), cardiogenic shock, ventricular fibrillation, intentional overdose. Chloroquine Phosphate dosage: N/A. Patient was hospitalized.

Ventricular Fibrillation, Pneumonia, Cardiogenic Shock, Intentional Overdose, Convulsion (8176336-8)
Patient was taking Chloroquine Phosphate (View Usage). Patient experienced the following unwanted or unexpected effects: ventricular fibrillation, pneumonia (pneumonia Questions), cardiogenic shock, intentional overdose, convulsion on Feb 22, 2012 from FRANCE Additional patient health information: Female patient , 45 years of age, . Chloroquine Phosphate dosage: N/A. Patient was hospitalized.

Toxicity To Various Agents, Respiratory Arrest, Cardiac Arrest (8044947-6)
Adverse event was reported on Dec 27, 2011 by a Female patient taking Chloroquine Phosphate (View Usage) (Dosage: (df Oral)) . Location: UNITED STATES , 82 years of age, Patient had the following side effects: toxicity to various agents, respiratory arrest, cardiac arrest (cardiac arrest Questions).

Arthralgia, Atrioventricular Block Complete, Ventricular Hypertrophy, Myopathy, Ischaemic Cardiomyopathy, Troponin Increased, Coronary Artery Occlusion, Acute Myocardial Infarction, Ejection Fraction Decreased (7981716-7)
on Nov 28, 2011 Female patient from FRANCE , 59 years of age, weighting 88.18 lb, was diagnosed with
  • cutaneous lupus erythematosus
and was treated with Chloroquine Phosphate (View Usage). After Chloroquine was administered, patient had the following side effects: arthralgia, atrioventricular block complete, ventricular hypertrophy, myopathy, ischaemic cardiomyopathy, troponin increased, coronary artery occlusion, acute myocardial infarction, ejection fraction decreased. Chloroquine Phosphate dosage: Daily Dose 300 Mg.
Patient was taking other medications:

Constipation, Obstruction Gastric, Abdominal Pain, Abdominal Distension, Gastric Ulcer, Abdominal Discomfort, Weight Decreased (7979556-8)
on Dec 07, 2011 Female patient from LEBANON , 57 years of age, weighting 167.6 lb, was treated with Chloroquine Phosphate(View Usage). Patient experienced the following unwanted or unexpected effects: constipation (constipation Questions), obstruction gastric, abdominal pain (abdominal pain Questions), abdominal distension, gastric ulcer, abdominal discomfort, weight decreased. Chloroquine Phosphate dosage: N/A.
Patient was taking other medications: Patient was hospitalized.

Hypoalbuminaemia, Disseminated Intravascular Coagulation, Pneumonia, Anaemia, Sepsis (7917803-9)
Patient was taking Chloroquine Diphosphate (View Usage). Patient had the following side effects: hypoalbuminaemia, disseminated intravascular coagulation, pneumonia (pneumonia Questions), anaemia, sepsis (sepsis Questions) on Sep 28, 2011 from INDONESIA Additional patient health information: Female patient , weighting 112.4 lb, . Chloroquine Diphosphate dosage: N/A.
Patient was taking other medications: Patient was hospitalized.

Cervix Carcinoma, Vaginal Haemorrhage, Weight Decreased, Visual Acuity Reduced, Vision Blurred, Diarrhoea, Nausea (7898506-6)
Adverse event was reported on Oct 26, 2011 by a Female patient taking Chloroquine Diphosphate (View Usage) (Dosage: N/A) . Location: MEXICO , 69 years of age, weighting 105.8 lb, After Chloroquine was administered, patient had the following side effects: cervix carcinoma, vaginal haemorrhage, weight decreased, visual acuity reduced, vision blurred, diarrhoea, nausea (nausea Questions).
Patient was taking other medications: Patient was hospitalized.

Liver Function Test Abnormal (7833866-3)
on Oct 19, 2011 Female patient from MEXICO , 68 years of age, weighting 114.6 lb, was diagnosed with and was treated with Chloroquine Diphosphate (View Usage). Patient experienced the following unwanted or unexpected effects: liver function test abnormal. Chloroquine Diphosphate dosage: N/A.
Patient was taking other medications:

Nausea, Feeling Abnormal, Decreased Appetite, Weight Decreased (7817090-6)
on Oct 14, 2011 Female patient from UNITED STATES , 71 years of age, weighting 150.0 lb, was diagnosed with
  • malaria prophylaxis
and was treated with Chloroquine Diphosphate(View Usage). Patient had the following side effects: nausea (nausea Questions), feeling abnormal, decreased appetite, weight decreased. Chloroquine Diphosphate dosage: 500mg 1 Per Week Oral.

Pyrexia, Malaise, Weight Decreased, Hepatic Enzyme Increased (7817048-7)
Patient was taking Chloroquine Diphosphate (View Usage). After Chloroquine was administered, patient had the following side effects: pyrexia, malaise, weight decreased, hepatic enzyme increased on Oct 14, 2011 from UNITED STATES Additional patient health information: Male patient , 71 years of age, weighting 175.0 lb, was diagnosed with
  • malaria prophylaxis
and. Chloroquine Diphosphate dosage: 500 Mg 1 Per Week Oral. Patient was hospitalized.

Torsade De Pointes, Overdose, Sinus Tachycardia, Electrocardiogram Qrs Complex Prolonged, Cardiac Arrest, Suicide Attempt, Hypokalaemia, Blood Pressure Decreased (7759770-7)
Adverse event was reported on Sep 14, 2011 by a Female patient taking Chloroquine Phosphate (View Usage) (Dosage: 25 Df, Unk) . Location: HONG KONG , 37 years of age, Patient experienced the following unwanted or unexpected effects: torsade de pointes, overdose, sinus tachycardia, electrocardiogram qrs complex prolonged, cardiac arrest (cardiac arrest Questions), suicide attempt, hypokalaemia, blood pressure decreased.
Patient was taking other medications: Patient was hospitalized.

Shock, Torsade De Pointes, Electrocardiogram Qrs Complex Prolonged, Intentional Overdose, Coma, Sinus Tachycardia, Cardiac Arrest, Completed Suicide, Hypotension (7757748-0)
on Sep 05, 2011 Female patient from HONG KONG , 37 years of age, was diagnosed with
  • overdose
and was treated with Chloroquine (View Usage). Patient had the following side effects: shock, torsade de pointes, electrocardiogram qrs complex prolonged, intentional overdose, coma, sinus tachycardia, cardiac arrest (cardiac arrest Questions), completed suicide, hypotension. Chloroquine dosage: 25 Tablets Of Chloroquine 250mg.
Patient was taking other medications:

Sinus Tachycardia, Cardiac Arrest, Suicide Attempt, Electrocardiogram Qrs Complex Prolonged, Torsade De Pointes, Blood Pressure Decreased, Hypokalaemia, Overdose (7753385-2)
on Sep 12, 2011 Female patient from HONG KONG , 37 years of age, was treated with Chloroquine Phosphate(View Usage). After Chloroquine was administered, patient had the following side effects: sinus tachycardia, cardiac arrest (cardiac arrest Questions), suicide attempt, electrocardiogram qrs complex prolonged, torsade de pointes, blood pressure decreased, hypokalaemia, overdose. Chloroquine Phosphate dosage: 25 Df, Unk.
Patient was taking other medications: Patient was hospitalized.

Overdose, Cardiac Arrest, Agitation, Torsade De Pointes, Restlessness, Loss Of Consciousness, Pulse Absent, Pneumonia (7657436-5)
Patient was taking Chloroquine Phosphate (View Usage). Patient experienced the following unwanted or unexpected effects: overdose, cardiac arrest (cardiac arrest Questions), agitation, torsade de pointes, restlessness, loss of consciousness, pulse absent, pneumonia (pneumonia Questions) on Jul 29, 2011 from SINGAPORE Additional patient health information: Female patient , 37 years of age, was diagnosed with and. Chloroquine Phosphate dosage: N/A.
Patient was taking other medications: Patient was hospitalized.

Aggression, Confusional State (7590169-2)
Adverse event was reported on Jun 21, 2011 by a Male patient taking Chloroquine (watson Laboratories) (View Usage) (Dosage: N/A) . Location: FRANCE , 53 years of age, Patient had the following side effects: aggression, confusional state.
Patient was taking other medications:

Dysaesthesia, Polyneuropathy, Paraesthesia, Hyporeflexia, Asthenia (7488880-7)
on May 10, 2011 Female patient from MEXICO , 48 years of age, was diagnosed with and was treated with Chloroquine (View Usage). After Chloroquine was administered, patient had the following side effects: dysaesthesia, polyneuropathy, paraesthesia, hyporeflexia, asthenia. Chloroquine dosage: 150 Mg, Qd.
Patient was taking other medications:

Diverticulitis, Discomfort, Flatulence, Abdominal Pain (7477609-4)
on May 02, 2011 Female patient from BRAZIL , 71 years of age, weighting 172.0 lb, was diagnosed with and was treated with Chloroquine Diphosphate(View Usage). Patient experienced the following unwanted or unexpected effects: diverticulitis, discomfort, flatulence, abdominal pain (abdominal pain Questions). Chloroquine Diphosphate dosage: N/A.
Patient was taking other medications:

Showing 1-25 of 119 

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Chloroquine Information

Alternative CHLOROQUINE Names:CHLOROQUI HYDROXYCH

Substance:CHLOROQUI HYDROXYCH

Chloroquine Dosage, Warnings, Usage.

Side Effects reported to FDA: 119. View FDA Adverse Reports

Chloroquine safety alerts: No

Reported deaths: 13

Reported hospitalizations: 36

1Lower Blood Pressure
2Sleeplessness, Cramps In Lower And Upper Limbs, Stomach Fullness, Loss Of Apetite, HBcount 8, Giddiness
3Labirinthitis
4Alopecia
5Phycosis
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Medicines have benefits and risks. The risks are the chances that something unwanted or unexpected could happen to you when you use them. You can protect yourself by searching summaries of recent safety Chloroquine alerts and medication adverse reports. Search for documented Chloroquine side effects on the label or the drug's package insert. You may also want to speak with your pharmacist or healthcare provider. Sometimes there are risks that only come to light after a medical product gets on the market and is used in a larger number of patients, for a longer period of time, and in patients whose health characteristics are different from those of the patients studied before approval.

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When did you start feeling unusual symptoms? what was the first symptom? Did your symptoms get worse over time? Did you have similar symptoms before using Chloroquine? What did Your doctor say? Share Your Story

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Reply to Chloroquine Questions, Answers, Feedback and Comments

Comments to date: 3. Page 1 of 1.

Roger Obershaw   Salem, Oregon

4:56pm on Wednesday, December 16th, 2009

I was in the Mycong delta in the navy from 8/67 -8/68. During that time we had to take a weekly ant... read more »

sapna   New Delhi

6:04pm on Friday, October 23rd, 2009

I have symptoms of sleeplessness, cramps in lower and upper limbs, stomach fullness, loss of apetite... read more »

Sociallyskilled   Location unknown

4:38pm on Friday, September 19th, 2008

My main side effect seems to be incessant rocking motion. I can hardly walk in a straight line. I've... read more »

Chloroquine Adverse Reactions
Atrioventricular Block Complete ( 9 Reports)
Cardiac Arrest ( 8 Reports) Cardiac arrest Questions
Acute Febrile Neutrophilic Dermatosis ( 6 Reports)
Headache ( 6 Reports) Headache Questions
Loss Of Consciousness ( 6 Reports)
Mania ( 6 Reports)
Muscular Weakness ( 6 Reports)
Overdose ( 6 Reports)
Psychotic Disorder ( 6 Reports) Psychotic disorder Questions
Pneumonia ( 5 Reports) Pneumonia Questions
Restlessness ( 5 Reports)
Ventricular Fibrillation ( 5 Reports)
Weight Decreased ( 5 Reports)
Abnormal Behaviour ( 4 Reports)
Dizziness ( 4 Reports) Dizziness Questions
Electrocardiogram Qt Prolonged ( 4 Reports)
Hypochromic Anaemia ( 4 Reports)
Insomnia ( 4 Reports)
Nausea ( 4 Reports) Nausea Questions
Pyrexia ( 4 Reports)
Rash ( 4 Reports) Rash Questions
Torsade De Pointes ( 4 Reports)
Visual Field Defect ( 4 Reports)
Abdominal Pain ( 3 Reports) Abdominal pain Questions
Accidental Overdose ( 3 Reports)
Acute Respiratory Failure ( 3 Reports)
Alopecia ( 3 Reports)
Anxiety ( 3 Reports) Anxiety Questions
Arthralgia ( 3 Reports)
Asthenia ( 3 Reports)

Often additional risks of using a medication, such as Chloroquine, become known after product is used by a larger number of patients, for a longer period of time, and by patients with different health characteristics from those studied before drug approval. This page allows You to Find answers and discuss health symptoms with other Chloroquine users, Learn more about unwanted side effects & find ways to reduce them. Browse Chloroquine Adverse Reports reported to FDA and participate in Chloroquine discussion, find alternative treatments and find ways to avoid or reduce risks associated with using Chloroquine. You can also Post a question to users community or Ask a Doctor. PatientsVille.com is Your Complete Guide to all common, undocumented and undisclosed side effects associated with drugs and vaccines.

Be aware of the following potential Chloroquine risks:

  • Watch for any Serious adverse events, such as life-threatening situation, which can require an admission to hospital or longer-than-expected hospital stay, permanent disability, birth defect, miscarriage, stillbirth, or birth with serious disease requires medical care to prevent permanent damage
  • Any potential Chloroquine quality problem: suspected counterfeit product, potentially contaminated product indicated by suspicious odor or unusual color, inaccurate or unreadable product labeling
  • Potential Chloroquine use error: mixing up products with similar drug names or packaging, taking wrong dose of a drug because of confusing dosing instructions on label
  • When applicable, Problems with different manufacturer of same medicine: not getting same results from a generic drug as a brand name drug, or from another generic

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Chloroquine Side Effects Notice - The material on this site is for informational purposes only, and is not a substitute for medical advice, diagnosis or treatment provided by a qualified health care provider. PatientsVille.com does not provide medical advice, diagnosis or treatment. The information regarding Chloroquine adverse reports, reviews and polls contained on PatientsVille.com site has not been scientifically or otherwise verified as to a cause and effect relationship and cannot be used to estimate the incidence of adverse drug reactions or for establishing or changing of patient treatments. Thank you for visiting Patientsville.com!