A B C D E F G H I J K L M N O P Q R S T U V W X Y Z G → Ga-Gz Ga-Gz GAS Test gatifloxacin-oral gemifloxacin-oral goldenseal (Hydrastis canadensis)-oral guaifenesin with dextromethorphan-oral guaifenesin, phenylephrine A B C D E F G H I J K L M N O P Q R S T U V W X Y Z