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 or vomiting
- Poor appetite
- Diarrhea
- Weight loss
- Stomach pain
- Constipation
- Drowsiness
- Difficulty with walking, movement, or coordination
- Dizziness
- Headache
- Blurred vision
Less Common Side Effects
- Irritability or nervousness
- Light sensitivity
- Hiccups
- Difficulty sleeping
- Confusion
- Unstable mood
- Difficulty thinking quickly
- Depression
- Hives or rash
- Swelling or puffiness around the eye(s)
Celontin serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Low blood cell counts: getting sick more often, feeling weak or short of breath more than usual
Source: DailyMed
The following Celontin 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:
Rare
Attempts at killing oneself
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
severe mood or mental changes
unusual behavior
Incidence not known
Attack, assault, or force
blistering, peeling, or loosening of the skin
blood in the urine
bloody, black, or tarry stools
chills
cloudy urine
cough or hoarseness
discouragement
feeling sad or empty
high fever
irritability
joint or muscle pain
lack of appetite
loss of interest or pleasure
lower back or side pain
mood or mental changes
nervousness
painful or difficult urination
pale skin
red skin lesions, often with a purple center
red, irritated eyes
shakiness and unsteady walk
shortness of breath
sores, ulcers, or white spots on the lips or in the mouth
swelling around the eyes
swollen glands
tiredness
trouble with concentrating
trouble with sleeping
unexplained bleeding or bruising
unsteadiness, trembling, or other problems with muscle control or coordination
unusual bleeding or bruising
unusual tiredness or weakness
vision changes
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
Change in consciousness
difficult or troubled breathing
irregular, fast or slow, or shallow breathing
loss of consciousness
pale or blue lips, fingernails, or skin
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
Blurred vision
change in color vision
difficulty having a bowel movement (stool)
difficulty seeing at night
dizziness
drowsiness
hiccups
hives or welts
increased sensitivity of the eyes to sunlight
loss of appetite
nausea or vomiting
pain or discomfort in the chest, upper stomach, or throat
redness of the skin
skin rash
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.
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