Journal
JOURNAL OF CLINICAL PHARMACY AND THERAPEUTICS
Volume 43, Issue 1, Pages 21-25Publisher
WILEY
DOI: 10.1111/jcpt.12597
Keywords
epigallocatechin gallate; hypertension; nifedipine; pre-eclampsia; pregnancy
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What is known and objectiveOral nifedipine is commonly used to treat pre-eclampsia, one of the most severe complications during pregnancy, but its clinical efficacy is less than ideal. Epigallocatechin gallate (EGCG), a natural compound from green tea, could benefit cardiovascular health especially hypertension. We investigated the clinical efficacy of EGCG, when complemented with oral nifedipine, in treating pre-eclampsia. MethodsA total of 350 pregnant women with severe pre-eclampsia were recruited and randomized to receive oral nifedipine, together with placebo (NIF+placebo) or EGCG (NIF+EGCG). The primary treatment outcome was the time needed to control blood pressure and interval time before a new hypertensive crisis, whereas the secondary treatment outcome was the number of treatment doses to effectively control blood pressure, maternal adverse effects and neonatal complications. Results and discussionComparing NIF+EGCG group to NIF+placebo group, the time needed to control blood pressure was significantly shorter (NIF+EGCG 31.216.7minutes, NIF+placebo 45.3 +/- 21.9minutes; 95% CI 9.7-18.5minutes), whereas interval time before a new hypertensive crisis was significantly prolonged (NIF+EGCG 7.2 +/- 2.9hours, NIF+placebo 4.1 +/- 3.7hours; 95% CI 2.3-3.9hours), and the number of treatment dosages needed to effectively control blood pressure was also lower. Between the two treatment groups, no differences in incidence rates of maternal adverse effects or neonatal complications were observed. What is new and conclusionsEGCG is both safe and effective in enhancing treatment efficacy of oral nifedipine against pregnancy-induced severe pre-eclampsia, but formal validation is required prior to its recommendation for use outside of clinical trials.
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