I take licorice root for POTS and it works great for me. I have tested it many times with the poor mans test and along with salt loading and some green tea my heart rate will only be 10 beats higher upon standing than laying down rather than the 30 plus. The only problem is that it doesnt last very long. Just a few hours. I monitor my blood pressure often and it's still low after licorice 100/60 or so. Before the licorice it's usually much lower. I also have been eating avocados and using "No Salt" for potassium which licorice depletes apparently. Not sure if that helps but I plan on getting my kidneys, liver and blood tested again soon. Thank you ramakentesh for the article!