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
Agitation
black, tarry stools
chest pain
clay-colored stools
constipation
dark urine
decrease in how much or how often you urinate
diarrhea
difficulty in swallowing and breathing
dizziness, faintness, or lightheadedness when suddenly getting up from a lying or sitting position
drooling
drowsiness
dryness of the mouth
fever and chills
headache
inability to have or keep an erection
loss of appetite
mask-like face
nasal congestion
nausea
painful or difficult urination
shuffling walk
sore throat
sores, ulcers, or white spots on the lips or in the mouth
stomach pain
swollen glands
tightness of the throat
trembling and shaking of the fingers and hands
uncontrolled chewing movements and movements of the arms and legs
unpleasant breath odor
unusual bleeding or bruising
unusual tiredness or weakness
vomiting of blood
yellow eyes or skin
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
Change in consciousness
fast, slow, or irregular heartbeat
loss of consciousness
seizures
severe sleepiness
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
increased sensitivity of the skin to sunlight
irregular menstrual periods
itching, rash, redness, or discoloration of the skin
jitteriness
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.
 Prochlorperazine side effects (more detail)
