@ZipLine-- Red ginseng tea is said to regulate many things in the body, including blood pressure and blood sugar. But like all things, it can have side effects as well. It's not possibly to predict how every individual will react to a herb. Moreover, if someone takes other medications and supplements, they may interact with red ginseng tea.
Red ginseng tea is a stimulant though. That's why it gives energy. Many people drink it in place of coffee. Just like coffee, red ginseng tea may cause increased heart beat and anxiety. I think these effects are more subtle though.
It also depends on how potent the tea is. For example, I drink Korean red ginseng tea that is quite potent. It really works like coffee when I have it in the morning.