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Read information about Perphenazine below to learn about its common uses. If you have questions about this medicine, please consult with your doctor or pharmacist and be sure to inform them of all the medications you are currently taking.
- Use this medicine as directed by your doctor. Check the label on the medicine for exact dosing instructions.
- This medicine comes with an extra patient information sheet called a Medication Guide. Read it carefully. Read it again each time you get this medicine refilled.
- Take this medicine by mouth with or without food. If stomach upset occurs, take with food to reduce stomach irritation.
- Do not suddenly stop taking this medicine. You may have an increased risk of side effects. If you need to stop this medicine, your doctor will gradually lower your dose.
- If you miss a dose of this medicine, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.
- Ask your health care provider any questions you may have about how to use this medicine.
- All medicines may cause side effects, but many people have no, or minor, side effects.
- Constipation; diarrhea; dizziness; drowsiness; dry mouth; enlarged pupils; flushing; headache; jitteriness; loss of appetite; nausea; stuffy nose; vomiting.
- Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest or throat; swelling of the mouth, face, lips, or tongue; unusual hoarseness; wheezing); burning, numbness, or tingling; changes in behavior; chest pain; confusion; difficulty sleeping; difficulty urinating; drooling; fainting; fast, slow, or irregular heartbeat; fever, chills, or sore throat; hallucinations; loss of bladder control; mask-like face; muscle rigidness or stiffness; muscle spasms of the face, neck, or back; muscle weakness; new or worsening mental or mood changes (eg, aggressiveness, agitation, anxiety, depression, exaggerated feeling of well-being, hostility, impulsiveness, inability to sit still, irritability, panic attacks, restlessness, ); nightmares; numbness of the arms and legs; one-sided weakness;
- prolonged or painful erection;
- ringing in the ears; seizures; severe or persistent constipation; severe or persistent dizziness, drowsiness, or headache; shuffling walk; slurred speech; sudden shortness of breath or vomiting; suicidal thoughts or attempts; swelling of the hands, ankles, legs, or feet; symptoms of high prolactin levels (eg, decreased sexual ability, enlarged breast size,
- missed menstrual period,
- nipple discharge); symptoms of liver problems (eg, dark urine; pale stools; severe or persistent nausea, stomach pain, or loss of appetite, yellowing of the skin or eyes); tremors; twitching or twisting movements; uncontrolled muscle movements (eg, loss of balance; trouble speaking, breathing, or swallowing; twitching of the face or tongue; uncontrolled movements of arms or legs); unusual bruising or bleeding; unusual eye movements or inability to move your eyes; unusual or excessive sweating; unusual tiredness or weakness; unusually pale skin; vision changes (eg, blurred vision).
- 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. You may report side effects to FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch