Drug General Information (ID: DDIO1GET9M)
  Drug Name Ziprasidone Drug Info Dexbrompheniramine Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Antipsychotic Agents Antihistamines
  Structure

 Mechanism of Ziprasidone-Dexbrompheniramine Interaction (Severity Level: Moderate)
     Additive anticholinergic effects Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Ziprasidone Dexbrompheniramine
      Mechanism Anticholinergic effects
Muscarinic acetylcholine receptor  Antagonist
Anticholinergic effects
Muscarinic acetylcholine receptor  Antagonist
      Key Mechanism Factor 1
Factor Name Muscarinic acetylcholine receptor M Structure Sequence
Protein Family G-protein coupled receptor 1 family
Protein Function
The muscarinic acetylcholine receptor mediates various cellular responses, including inhibition of adenylate cyclase, breakdown of phosphoinositides and modulation of potassium channels through the action of G proteins. Primary transducing effect is Pi turnover.
    Click to Show/Hide
      Mechanism Description
  • Additive anticholinergic effects by the combination of Ziprasidone and Dexbrompheniramine 

Recommended Action
      Management Caution is advised when agents with anticholinergic properties are combined, particularly in the elderly and those with underlying organic brain disease, who tend to be more sensitive to the central anticholinergic effects of these drugs and in whom toxicity symptoms may be easily overlooked. Patients should be advised to notify their physician promptly if they experience potential symptoms of anticholinergic intoxication such as abdominal pain, fever, heat intolerance, blurred vision, confusion, and/or hallucinations.

References
1 Cohen MA, Alfonso CA, Mosquera M. Development of urinary retention during treatment with clozapine and meclizine [published correction appears in Am J Psychiatry 1994 Jun;151(6):952]. Am J Psychiatry. 1994;151(4):619-620. [PMID: 8147469]
2 Forester D "Fatal drug-induced heat stroke." JACEP 7 (1978): 243-4. [PMID: 661049]
3 Gershon S, Neubauer H, Sundland DM "Interaction between some anticholinergic agents and phenothiazines." Clin Pharmacol Ther 6 (1965): 749-56. [PMID: 4378954]
4 Hvizdos AJ, Bennett JA, Wells BG, Rappaport KB, Mendel SA "Anticholinergic psychosis in a patient receiving usual doses of haloperidol." Clin Pharm 2 (1983): 174-8. [PMID: 6883947]
5 Johnson AL, Hollister LE, Berger PA "The anticholinergic intoxication syndrome: diagnosis and treatment." J Clin Psychiatry 42 (1981): 313-7. [PMID: 7251568]
6 Kulik AV, Wilbur R "Delirium and stereotypy from anticholinergic antiparkinson drugs." Prog Neuropsychopharmacol Biol Psychiatry 6 (1982): 75-82. [PMID: 7202232]
7 Lee BS "Possibility of hyperpyrexia with antipsychotic and anticholinergic drugs." J Clin Psychiatry 47 (1986): 571. [PMID: 3771507]
8 Mann SC, Boger WP "Psychotropic drugs, summer heat and humidity, and hyperplexia: a danger restated." Am J Psychiatry 135 (1978): 1097-100. [PMID: 29501]
9 Moreau A, Jones BD, Banno V "Chronic central anticholinergic toxicity in manic depressive illness mimicking dementia." Can J Psychiatry 31 (1986): 339-41. [PMID: 3708528]
10 Product Information. Artane (trihexyphenidyl). Lederle Laboratories, Wayne, NJ.
11 Product Information. Cogentin (benztropine). Merck & Co, Inc, West Point, PA.
12 Sarnquist F, Larson CP Jr "Drug-induced heat stroke." Anesthesiology 39 (1973): 348-50. [PMID: 4728582]
13 Stadnyk AN, Glezos JD "Drug-induced heat stroke." Can Med Assoc J 128 (1983): 957-9. [PMID: 6831343]
14 Warnes H, Lehmann HE, Ban TA "Adynamic ileus during psychoactive medication: a report of three fatal and five severe cases." Can Med Assoc J 96 (1967): 1112-3. [PMID: 6021058]
15 Zelman S, Guillan R "Heat stroke in phenothiazine-treated patients: a report of three fatalities." Am J Psychiatry 126 (1970): 1787-90. [PMID: 5441734]