Side Effects

If you experience severe or persistent side effects after using this medication, you should call your doctor right away. Serious side effects may include:

• Confusion
• Flu-like symptoms, such as sore throat, high fever, sweating, or chills
• Irregular or fast heartbeat; slowed heartbeat
• Difficulty breathing or swallowing or a noticeable tightness of the throat
• Skin conditions such as severe rash, itching, or hives
• Yellowing eyes or skin
• Seizures
• Swelling of face, eyes, or extremities
• A swollen tongue or uncontrollable tongue movements
• Trouble with night vision or seeing in dimly lit areas
• Tense muscles or tension in the neck
• Decreased thirst
• Eye discoloration or pain; seeing everything with a brown tint

Less serious side effects may include:

• Drowsiness, dizziness, or tiredness
• Sleep issues, strange dreams, or insomnia
• Feelings of paranoia
• Dry mouth
• Loss of appetite
• Restlessness or agitation
• Pale skin or changed skin color
• Upset stomach, nausea, vomiting, diarrhea, or constipation
• Increased skin sensitivity to sunlight
• Difficulty urinating, frequent urination, or inability to control urination
• Breast enlargement or breast milk production
• Missed menstrual periods
• Blurred vision or changes in pupil size
• Blank expression, shuffling walk, or unusual, uncontrollable body movements
• Decreased sexual ability in men

Precautions

This medication is not recommended for treatment in older adults with dementia-related psychosis, as it may increase the risk of death. Excessive use of this drug may lead to the development of tardive dyskinesia, a serious and potentially permanent movement condition. Women and seniors are at higher risk for developing tardive dyskinesia.

If you have or have ever had brain damage, blood cell or bone marrow issues, breast cancer, an abnormal electroencephalogram, heart disease, an enlarged prostate, urinary problems, or lung infections, you should speak to your doctor before beginning treatment with this drug. Tell your doctor if you are affected by breathing issues such as asthma or emphysema, or if you have experienced lung problems in the past. You should also mention if you have had any other serious reactions to similar drugs. If you work now or plan on working with organophosphorus insecticides, you should not take this medication. Also let your doctor know if you are experiencing depression, or if you are pregnant.

Trilafon may interact with other medications or supplements, including antihistamines, antidepressants, barbiturates, sleeping pills, antianxiety medications, muscle relaxers, minerals, vitamins, herbal products, and more. If you are taking other prescription drugs or supplements, you ask your doctor or pharmacist about any interactions before taking this drug.