I had been on xanax 2-3mg for about 7-8 years,and it worked well for my anxiety.. Suddenly one day in the end of November 2016,I suddenly got a panic attack and high blood pressure,rapid heartbeat (pulse was 160 bpm) after taking xanax.
I took xanax again but I get the same paradoxical reaction. Never got that before.
Can it be a sign of tolerance withdrawal?