Drug General Information (ID: DDIRP9X3WH)
  Drug Name Haloperidol Drug Info Isoniazid Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Antipsychotic Agents Antitubercular Agents
  Structure

 Mechanism of Haloperidol-Isoniazid Interaction (Severity Level: Minor)
     Decreased metabolism (Unspecific) Click to Show/Hide Mechanism Graph
      Drug Name Haloperidol Isoniazid
      Mechanism Haloperidol Inhibition of hepatic metabolism of haloperidol
      Key Mechanism Factor 1
Factor Name Pharmacokinetics
Factor Description Alters the metabolism of the drug, leading to changes in the plasma concentration of the drug and affecting the pharmacological effects.
      Mechanism Description
  • Decreased metabolism of Haloperidol caused by Isoniazid 

References
1 Takeda M, Nishinuma K, Yamashita S, et al "Serum haloperidol levels of schizophrenics receiving treatment for tuberculosis." Clin Neuropharmacol 9 (1986): 386-97. [PMID: 3731135]