A systematic search for relevant studies was performed of the PubMed, ScienceDirect, Cochrane Library and Wiley Online Library databases from their respective inception until Fabruary 2012. The bibliography of the retrieved studies was also examined. Stevia rebaudiana Bertoni, stevioside, hypertension and randomized controlled trial were used as searching keywords. The studies were included if they: 1. were randomized controlled trials (RCTs) comparing stevioside from SRB with placebo in hypertensive patients; 2. reported on systolic blood pressure (SBP) and diastolic blood pressure (DBP); and 3. were published in English. Data were pooled using the inverse variance-weighted method and statistical analyses were performed using the Review Manager (RevMan) version 5.1.4.