Background: Classical hormone replacement therapy for hot flashes is contraindicated in breast cancer especially in endocrine responsive disease.
Patients and methods:In a double-blind, randomized phase III study, breast cancer patients suffering from hot flashes at least twice a day, who were not taking any medication against hypertension and depression received either clonidine 0.075 mg twice a day or venlafaxine 37.5 mg twice a day for 4 weeks. The primary end point was defined as the frequency of hot flashes after 4 weeks of treatment. A self-reported 1-week hot flash and other symptom questionnaire were kept before the start of treatment until the end of treatment course.
Conclusion:Venlafaxine is significantly more effective in reducing the frequency of hot flashes in breast cancer patients than clonidine.