magnesium and potassium. I’ve experienced profound immediate lowering of blood pressure by taking 0.25-0.5 g of potassium bicarbonate every day or every few days. Try to get 4 g of potassium per day from diet or supplement. I’ve published some research on potassium sensing in renal physiology. Other benefits I’ve noticed are decreased heart palpitations and more mental energy. A note about magnesium: make sure you’re taking a chelated form. Most multivitamins use MgO, which is not very bioavailable. The difference in absorption is like eating a rock vs eating a gummy bear.