Effects of manidipine hydrochloride on blood pressure in hypertensive patients--a comparison with nifedipine retard.
Manidipine hydrochloride (MH) is a new calcium channel antagonist which is not yet available in Taiwan. Thus, a clinical trial was performed. The clinical effects and adverse effects of MH were compared with those of nifedipine hydrochloride retard monotherapies. Sixty-three out-patients with mild to moderate hypertension and no advanced systemic diseases were randomly divided into 2 groups. Twenty patients remained in each group after some patients withdrew from the study. Blood pressure decreased significantly after treatment in both groups (p < 0.01). In the manidipine group, systolic blood pressure (SBP) decreased from 164 +/- 14 to 140 +/- 18 mmHg and diastolic BP (DBP) decreased from 99 +/- 6 to 87 +/- 7 mmHg by the 8th week. In the nifedipine group, SBP decreased from 163 +/- 11 to 134 +/- 17 mmHg and DBP decreased from 101 +/- 10 to 88 +/- 9 mmHg by the 8th week. Pulse rates did not change significantly. Antihypertensive efficacy was 18/20 (90%) and 19/22 (86.4%) in the manidipine and nifedipine groups, respectively. There were a few adverse effects in both groups, the reaction was severe as to lead to the discontinuation of medication in two patients in the nifedipine group. No significant changes in laboratory tests were identified in either group, except for minimal decreases of lactate dehydrogenase and creatine kinase in the nifedipine group. We conclude that MH was equally safe and effective as nifedipine and it may have less severe side effects compared to nifedipine.
Lai
Y H
YH
Department of Internal Medicine, Kaohsiung Medical College, Taiwan, Republic of China.
Guh
J Y
JY
Chen
H C
HC
Hwang
S J
SJ
Tsai
J C
JC
Tsai
J H
JH
D000328:Adult; D000368:Aged; D001794:Blood Pressure / Q000187:drug effects; D004095:Dihydropyridines / Q000009:adverse effects / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D006973:Hypertension / Q000188:drug therapy* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009543:Nifedipine / Q000008:administration & dosage / Q000009:adverse effects / Q000494:pharmacology*; D009578:Nitrobenzenes; D010879:Piperazines
D004095:Dihydropyridines; D009578:Nitrobenzenes; D010879:Piperazines; C054218:manidipine; D009543:Nifedipine