Prochlorper is an abbreviated form of prochlorperazine, which is a medication used to control severe nausea and vomiting or treat symptoms of schizophrenia or anxiety, as stated by MedlinePlus. Drugs.com states that the brand name of prochlorperazine is Compazine.
MedlinePlus states that prochlorperazine belongs to a class of medications known as conventional antipsychotics, and it decreases abnormal excitement in the brain. Drugs.com reports several potential side effects of prochlorperazine, including tremors, abnormal muscle movements, lightheadedness, restlessness, yellowing of the skin or eyes, headache, dizziness, drowsiness, blurred vision, constipation and sleep problems. MedlinePlus warns that older adults with dementia are at increased risk of death during treatment with prochlorperazine.