Comparative short-term evaluation of penfluridol and trifluoperazine in chronic schizophrenia.

A double blind comparative study was conducted to evaluate the efficacy and safety of penfluridol and trifluoperazine in patients of chronic schizophrenia. Penfluridol was administered once weekly while trifluoperazine was administered twice daily by preparing identical capsules. The data revealed that both the compounds were similarly effective in maintaining control of symptoms of chronic schizophrenia. However, penfluridol has a definite advantage over trifluoperazine since it is administered once a week instead of twice a day.