I Am Having Vertigo Problems Since The Last One Week

I am having vertigo problems since the last one week after consulting doctor he further recommended to take 8gm vertin three times and morning andd evening one dizitac along with verrtin. After taking two dizitac tab.Iam not feeling well ,heavy tiredness and not able to walk freely, and feeling so bad and now i have stopped to use the tablet, is there any problema to take contonuously this new tab