I Have Been Diagnosed With Supraventricular Tachacardia Few Yrs Ago,

I have been diagnosed with supraventricular tachacardia few yrs ago, since then I have been trying to improve my health and heart by supplements for heart health and over all health, so along with eating whole foods and taking supplments and using essential oils and no man made products on my body along with the manual labor I do daily I was not understanding why I can not get my blood pressure lower when my heart rate is lower, my heart rate used to be 100 to 120 now it stays around 60 to 70 but not my bp. I am not on any meds anymore because of all the side effects I was enduring