Thanks for your question on Healthcare Magic. I can understand your concern. Haloperidol is oldest antipsychotic drug. It is having a lot of side effects. Extrapyramidal side effects are highest. So your client s all muscular symptoms are due to Haloperidol. Better to start newer antipsychotic drug like fluoxetin to avoid muscular side effects. At present for symptomatic relief, he can take ibuprofen and acetaminophen. For permanent and long term cure, Haloperidol should be stopped. Hope I have solved your query. I will be happy to help you further. Wishing good health to your client. Thanks.