What is a good medication, or treatment, for anxiety attacks?

Grounding exercises do not work. I see my psychiatry doctor in one hour. 3pm mountain Standard time. I get a panic attack between 7 and 9 pm once a week and I run out of school diploma exams terrified. Exams are coming up in January. I have 5 – 15 minutes with the doctor. I switched to caffeine and sugar free pop.