A high incidence of cough associated with combination therapy of hypertension with isradipine and lisinopril in Chinese subjects.

The efficacy and tolerability of combination therapy using Lisinopril (5-20 mg om) and Isradipine (1.25 mg-2.50 mg bd) was assessed in 29/50 Chinese subjects, whose blood pressures were not controlled on Isradipine alone. The addition of Lisinopril produced approximately two-fold reductions in blood pressure compared to Isradipine alone, increasing the responder rate of the original cohort of 50 subjects by 18% and normalization rate, by 32%. No significant changes in haematological or biochemical parameters, CXR or ECG, were observed. However, use of Lisinopril in our subjects was associated with a high incidence of cough (48%), possibly limiting its use in this population.