Hi,
Most of your symptoms appear to be side effects of medications.
Xanax can cause dizziness,
fainting, weakness, muscle aches and pains, diahrrea, dry mouth, nervousness, restlessness and pounding in the chest.
Please discuss this with your treating doctor.
Treatment with xanax should always start with a low dose like 0.25 mg or 0.5 mg and then the dose should be gradually increased.
Please discuss this with your treating doctor and please remember not to increase the dose on your own.