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:
More common
Abdominal pain
acid or sour stomach
belching
bloating
cloudy urine
decrease in amount of urine
decrease in urine output or decrease in urine-concentrating ability
diarrhea
difficulty having a bowel movement (stool)
excess air or gas in stomach or intestines
full feeling
heartburn
indigestion
itching skin
pain or discomfort in chest, upper stomach, or throat
pale skin
passing gas
nausea
noisy, rattling breathing
rash with flat lesions or small raised lesions on the skin
shortness of breath
swelling of face, fingers, hands, feet, lower legs, or ankles
troubled breathing at rest
troubled breathing with exertion
unusual bleeding or bruising
unusual tiredness or weakness
vomiting
weight gain
Less common
Abdominal cramps
stomach soreness or discomfort
Rare
Agitation
back, leg, or stomach pains
bleeding gums
blistering, peeling, loosening of skin
blood in urine or stools
bloody, black, or tarry stools
blurred vision
burning feeling in chest or stomach
change in vision
chest pain
chills
clay-colored stools
coma
confusion
constipation
cough or hoarseness
dark urine
decreased urine output
depression
difficulty breathing
difficulty swallowing
dilated neck veins
dizziness
dry mouth
extreme fatigue
fast, irregular, pounding, or racing heartbeat or pulse
fever with or without chills
frequent urination
general body swelling
general feeling of tiredness or weakness
hair loss, thinning of hair
headache
hives or welts
hostility
impaired vision
increased blood pressure
increased volume of pale, dilute urine
irregular breathing
irritability
itching
joint or muscle pain
lab results that show problems with liver
lethargy
light-colored stools
loss of appetite
lower back or side pain
muscle twitching
nosebleeds
painful or difficult urination
pains in stomach, side, or abdomen, possibly radiating to the back
pinpoint red spots on skin
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
rash
red skin lesions, often with a purple center
red, irritated eyes
redness of skin
seizures
severe abdominal pain, cramping, burning
severe and continuing nausea
sore throat
sores, ulcers, or white spots in mouth or on lips
stiff neck or back
stomach upset
stupor
swollen or painful glands
tenderness in stomach area
thirst
tightness in chest
unpleasant breath odor
upper right abdominal pain
vomiting of blood
vomiting of material that looks like coffee grounds
wheezing
yellow eyes and skin
Symptoms of overdose
Bluish lips or skin
difficulty sleeping
disorientation
dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly
drowsiness to profound coma
hallucination
lightheadedness or fainting
mood or other mental changes
muscle tremors
not breathing
rapid, deep breathing
restlessness
slow or irregular heartbeat
stomach cramps
sudden fainting
sweating
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:
More common
Continuing ringing or buzzing or other unexplained noise in ears
hearing loss
nervousness
Rare
Crying
depersonalization
discouragement
dry eyes
dysphoria
euphoria
feeling sad or empty
lack of appetite
loss of interest or pleasure
mental depression
paranoia
quick to react or overreact
rapidly changing moods
runny nose
sleepiness or unusual drowsiness
sleeplessness
sneezing
stuffy nose
trouble concentrating
trouble sleeping
unable to sleep
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.
 Motrin side effects (more detail)
