The herb licorice / liquorice promotes the health and function of the adrenal glands. I recommend you use it. You should feel much better after taking it. Use the herb, not the candy.
The adrenal glands produce hormones which regulate the amount of sodium and potassium in the body. Excess potassium in the body, results in increased secretion of water by the kidneys, and loss of water from the body, including low blood pressure. Using licorice, results in the retention of more sodium in the body, and less secretion of water by the kidneys. This results in more water in the body, and increased blood pressure.
Long term use, or high doses, of licorice may result in fluid retention, or high blood pressure. These can be resolved, by discontinuing it's use.