SPL Set ID: 7ce7f23c-f58b-4b8b-a31a-47bd4e792345

Haloperidol is the first of the butyrophenone series of major antipsychotics. The chemical designation is 4-[4-(p-chlorophenyl)-4-hydroxypiperidino]-4'-fluorobutyrophenone and it has the following structural formula: Haloperidol Injection, USP is available as a sterile parenteral form for intramuscular injection in a 1 mL single-dose vial, each mL containing 5 mg haloperidol (as the lactate) and lactic acid for pH adjustment between 3.0 to 3.8. Haloperidol Injection, USP is also available as a sterile parenteral form for intramuscular injection in a 10 mL multi-dose vial, each mL containing 5 mg haloperidol (as the lactate) with 1.8 mg methylparaben and 0.2 mg propylparaben per mL (as preservatives), and lactic acid for pH adjustment between 3.0 to 3.8. Structural Formula