I have been relatively stable for about 10-12 years with meds for POTS. However in this past 6 mos, I've experienced some bradycardia 40-49 but and sometimes systolic BP 97-101. Via phone I was told to eat more salt. That did help systolic BP rise, and perhaps has helped pulse rate rise a little. I've been on Metoprolol ER 50mg for about 10 years with no dosage changes. I see POTS doc again around Nov 2017, so will see what he says at that time.