An 8-Month Phase 3, Open-Label Study With a Blinded Reversal Phase to Evaluate the Safety and Tolerability of TAK-491 in Subjects With Essential Hypertension

The purpose of this study is to determine the long term safety and tolerability of azilsartan medoxomil, once daily (QD), in participants with Essential Hypertension.本研究旨在明确每日一次（QD）给药的阿齐沙坦酯（azilsartan medoxomil）用于原发性高血压（Essential Hypertension）受试者的长期安全性与耐受性。