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Discontinued Warning IconPlease Note: This Brand Name drug is no longer available in the US.
(Generic versions may still be available.)

Torecan Patient Information Including Side Effects

Brand Names: Torecan

Generic Name: thiethylperazine (Pronunciation: thye eh thill PEAR a zeen)

What is thiethylperazine (Torecan)?

Thiethylperazine is in a class of drugs called phenothiazines.

Thiethylperazine is used to relieve nausea and vomiting.

Thiethylperazine may also be used for purposes other than those listed in this medication guide.

What are the possible side effects of thiethylperazine (Torecan)?

If you experience any of the following serious side effects, stop taking thiethylperazine and seek emergency medical attention or contact your doctor immediately:

  • an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives);
  • uncontrollable movements of the mouth, tongue, cheeks, jaw, arms, or legs;
  • confusion; or
  • yellowing of the skin or eyes.

Other, less serious side effects may be more likely to occur. Continue to take thiethylperazine and talk to your doctor if you experience

  • headache, dizziness, or drowsiness;
  • agitation, weakness, or tremor (shaking);
  • an increased heart rate;
  • constipation; or
  • dry mouth.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.

Read the Torecan (thiethylperazine) Side Effects Center for a complete guide to possible side effects

What is the most important information I should know about thiethylperazine (Torecan)?

Call your doctor immediately if you experience uncontrollable movements of the mouth, tongue, cheeks, jaw, arms or legs.

Use caution when driving, operating machinery, or performing other hazardous activities. Thiethylperazine may cause dizziness or drowsiness. If you experience dizziness or drowsiness, avoid these activities.

Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while taking thiethylperazine.

Do not take thiethylperazine with other drugs that cause drowsiness, including antidepressants, antihistamines, sedatives (used to treat insomnia), pain relievers, anxiety medicines, and muscle relaxants, except under the direction of your doctor.

Side Effects Centers

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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