All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using fluphenazine (generic only):
Agitation; bizarre dreams; constipation; dizziness; drowsiness; dry mouth; headache; loss of appetite; nausea; stuffy nose.
Seek medical attention right away if any of these SEVERE side effects occur when using fluphenazine (generic only):
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); changes in menstrual period; changes in sexual ability; chest pain; dark urine; difficulty swallowing; drooling; fainting; fast or irregular heartbeat; fever, chills, or sore throat; involuntary movements or spasms of the arms, legs, tongue, face, mouth, or jaw; mask-like face; muscle restlessness; prolonged or painful erection; restlessness; seizures; severe constipation; severe or persistent dizziness; shuffling walk; sleeplessness; sore mouth or gums; stiff or rigid muscles; stomach pain; sweating; trouble urinating; unusual bruising or bleeding; unusual eye movements or inability to move eyes; unusual mood or mental changes, including lack of response to your surroundings; vision changes; weakness of arms or legs; yellowing of the skin or eyes.
This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.
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