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
Blurred vision
burning, prickling, or tingling sensations
clumsiness or unsteadiness
confusion
continuous, uncontrolled back-and-forth or rolling eye movements
dizziness
double vision
drowsiness
eye redness or pain
generalized slowing of mental and physical activity
increased eye pressure
memory problems
menstrual changes
menstrual pain
nervousness
speech or language problems
trouble in concentrating or paying attention
unusual tiredness or weakness
Less common
Aggression
agitation
chest pain
chills
discouragement
feeling sad or empty
fever
irritability
lack of feeling or emotion
lessening of sensations or perception
loss of appetite
loss of interest or pleasure
red, irritated, or bleeding gums
sore throat
stomach pain
trouble sleeping
weight loss
Rare
Blood in the urine
difficult or painful urination
frequent urination
hearing loss
itching, skin rash
loss of bladder control
lower back or side pain
nosebleeds
pale skin
ringing or buzzing in the ears
swelling
trouble breathing
Incidence not known
Blistering, peeling, or loosening of the skin
bloating
clay-colored stools
constipation
cough
diarrhea
increased rate of breathing
joint or muscle pain
pain or tenderness in the upper stomach
red skin lesions, often with a purple center
sores, ulcers, or white spots in the mouth or on the lips
yellow eyes or skin
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
Decreased awareness or responsiveness
dizziness, fainting, or lightheadedness when getting up suddenly from a lying or sitting position
severe sleepiness
unusual drowsiness, dullness, or feeling of sluggishness
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
Breast pain in women
tremors
Less common
Back pain
constipation
feeling of warmth
heartburn
increased sweating
leg pain
redness of the face, neck, arms, and occasionally, upper chest
Rare
Decrease in sexual performance or desire
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.
 Qudexy XR side effects (more detail)
