The incidence of TEAEs was higher for BRV 20 ( 56/99 , 56.6 % ) , 50 ( 62/99 , 62.6 % ) , and 100 mg/day ( 63/100 , 63.0 % ) than PBO ( 53/100 , 53.0 % ) ; most TEAEs were mild or moderate in severity .