Haloperidol is a medication used on Earth. It is a typical antipsychotic used to treat various things, one of which is Schizophrenia.
History[]
Sam Carter looking through Martin Lloyd's medications.
When Martin Lloyd wanted to return to his people's homeworld, Haloperidol was one of the multiple drugs that was prescribed to him by Peter Tanner. He laced Martin's medications with several chemicals to block Martin's memories. Dr. Daniel Jackson and Major Sam Carter encountered the drugs when they searched Martin Lloyd's house. Carter sent his medication for testing in a lab in Montana and the results were faxed to Stargate Command where Dr. Janet Fraiser told Major General George S. Hammond of the drug's tampering. When Sam and Daniel spoke to Tanner, Haloperidol was mentioned among the list of drugs that he had been taking. (SG1: "Point of No Return")