My Son Is 14 Year Old And Studying In Class

My son is 14 year old and studying in class IX.He is getting tensed while attending exams and his throat getting dry.Once he had puked during such instance and after that he is alway scarrying water bottle with him always.He is not at ll comfortable without water bottle near to him.We have shown him to a Psychiatrist and he had advised medication for one month with tablets C. Ancer-D and T. Escigress-CZ (0.25) for 20 days and T. Escigress-CZ (10) for 10 days.
My question is ,is it okay to take such tablets for this kind of symptoms?