Effective Prophylactic Therapy for Cyclic Vomiting Syndrome in Children Using Amitriptyline or Cyproheptadine

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Abstract
Objective. To evaluate our experience using the antimigraine prophylactic drugs, amitriptyline and cyproheptadine, for the prophylactic management of cyclic vomiting syndrome (CVS) in children. Methods and Patients. Twenty-seven patients (16 males) ranging in age from 2 to 16 years at diagnosis, fulfilling the diagnostic criteria for CVS and treated prophylactically with either amitriptyline (22) or/and cyproheptadine (6) were identified through retrospective chart review. Individual patient data were corroborated by the attending physician and/or interviews with patients and families. Minimum follow-up time before entry into the study group was 5 months. Patients were stratified according to three treatment outcomes: 1) complete response—no attacks, 2) partial response—50% or greater reduction in frequency of attacks, and 3) no response—less than 50% decrease in frequency of attacks. Results. Of the 22 patients treated with amitriptyline, 16 (73%) had a complete response while 4 (18%) had a partial response. Of the 6 patients treated with cyproheptadine, 4 (66%) had a complete response and 1 (17%) had a partial response. Thus, 91% of the amitriptyline group and 83% of the cyproheptadine group had at least a partial response to therapy. No patients experienced significant side effects to either medication. Conclusion. The antimigraine prophylactic drugs, amitriptyline and cyproheptadine, represent effective prophylactic agents for the management of CVS in the vast majority of patients fulfilling the diagnostic criteria for this syndrome.

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