Published by : PROFESSIONAL MEDICAL PUBLICATIONS
July - September 2009
Comparison of the efficacy and safety of Chlorpromazine
with Verapamil for the treatment of acute opioid
Munawar Alam Ansari1, Zahida Memon2, Shahida P. Ahmed3, Mehar Ali4
Objective: To compare the efficacy and safety of chlorpromazine with Verapamil in patients with Acute opioid Abstinence Syndrome.
Methodology: Single blind comparative clinical trial was conducted at Department of Pharmacology, BMSI, JPMC, Karachi, over the period of one year. Forty opiate-dependent subjects were chosen at random who were in search of opioid abstinence treatment. All patients were grouped into two groups, group-I received chlorpromazine 150 mg/day and group-II received Verapamil 120mg/day in divided doses. Every patient completed the management plan while admitted in the hospital for 10 days.
Results: The chlorpromazine showed decreased efficacy and safety, whereas verapamil showed clinically pertinent decline in the subjective symptoms of acute opioid abstinence syndrome.
Conclusion: The study showed Verapamil is superior to chlorpromazine in the treatment of opioid abstinence syndrome indicated by better reduction of withdrawal symptom scores, excessive opioid urinary excretion and lees side effects. The superiority of verapamil over chlorpromazine in controlling opioid abstinence syndrome may indicate that calcium is involved in the initiation and development of opioid abstinence syndrome.
KEY WORDS:Opioid abstinence syndrome, Chlorpromazine, Verapamil.
Pak J Med Sci July - September 2009 Vol. 25 No. 4 641-645
How to cite this article:
Ansari MA, Memon Z, Ahmed SP, Ali M. Comparison of the efficacy and safety of Chlorpromazine with Verapamil for the treatment of acute opioid abstinence syndrome. Pak J Med Sci 2009;25(4):641-645.
1. Dr. Munawar Alam Ansari, Ph.D,
Associate Prof., Dept. of Pharmacology & Therapeutics,
Liaquat University of Medical & Health Sciences,
Jamshoro – Pakistan.
2. Dr. Zahida Memon, Ph.D,
Professor, Dept. of Pharmacology,
Sind Medical College, Karachi-Pakistan.
3. Dr. Shahida P. Ahmed, Ph.D
Professor, Dept. of Pharmacology, University of Karachi.
4. Dr. Mehar Ali, M.Phil,
(Rtd.) Professor & Chairman Pharmacology,
Basic Medical Sciences Institute (BMSI),
Jinnah Postgraduate Medical Center, Karachi.
Dr. Munawar Alam Ansari, Ph.D
* Received for Publication: January 20, 2009
* Revision Received: June 11, 2009
* Revision Accepted: June 29, 2009
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