The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Common Side Effects
- Nausea
- Vomiting
- Diarrhea
- Stomach cramps
- Headache
- Rash
- Itching
Less Common Side Effects
- Tiredness
- Confusion
- Anxiety
- Hallucinations (hearing or seeing things that aren't there)
- Muscle weakness
Chloroquine Phosphate serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Seizures
- Changes in vision: blurry vision, only seeing half of an object, difficulty focusing, trouble seeing things at night
- Irregular heartbeat (QT prolongation): dizziness, feeling lightheaded, blurry vision, pounding heart, fainting
- Dangerously low blood sugar: feeling anxious, sweating, shaking, confusion, dizziness, weakness, fast heartbeat, feeling hungry, coma
- Serious skin reactions: fever, tiredness, body aches, blistering rash, peeling skin
Source: DailyMed
The following Chloroquine Phosphate side effects have also been reported
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Incidence not known
attempts at killing oneself
back, leg, or stomach pains
black, tarry stools
bleeding gums
blistering, peeling, or loosening of the skin
blood in the urine or stools
blurred or decreased vision
change in near or distance vision
chest discomfort or pain
chills
cold sweats
confusion
continuing ringing or buzzing or other unexplained noise in the ears
dark urine
difficulty in focusing the eyes
difficulty with speaking
difficulty with swallowing
disturbed color perception
dizziness
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
double vision
fast, slow, irregular, or pounding heartbeat
feeling that others are watching you or controlling your behavior
feeling that others can hear your thoughts
feeling, seeing, or hearing things that are not there
general tiredness and weakness
halos around lights
headache
hearing loss
inability to move the eyes
increased blinking or spasms of the eyelid
joint or muscle pain
large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
light-colored stools
loss of balance control
lower back or side pain
muscle trembling, jerking, or stiffness
muscular pain, tenderness, wasting, or weakness
night blindness
overbright appearance of lights
painful or difficult urination
pale skin
pinpoint red spots on the skin
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
red skin lesions, often with a purple center
red, irritated eyes
restlessness
shuffling walk
sores, ulcers, or white spots on the lips or in the mouth
sticking out of the tongue
stiffness of the limbs
sweating
swollen or painful glands
tightness in the chest
trouble breathing
tunnel vision
twitching, twisting, or uncontrolled repetitive movements of the tongue, lips, face, arms, or legs
uncontrolled movements, especially of the face, neck, and back
unusual bleeding or bruising
unusual tiredness or weakness
upper right abdominal or stomach pain
vomiting
yellow eyes and skin
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
Cold, clammy skin
decreased urine
drowsiness
fast, weak pulse
increased thirst
lightheadedness, dizziness, or fainting
loss of appetite
muscle pain or cramps
numbness or tingling in the hands, feet, or lips
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Incidence not known
Change in hair color
increased sensitivity of the skin to sunlight
redness or other discoloration of the skin
severe sunburn
stomach cramps
trouble sleeping
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
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